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Environmental Chemistry publishes papers reporting chemistry that enhances our understanding of the environment including air, water, soil, sediments, and biota. More

Editor-in-Chief: Kevin Francesconi

 
 
 

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Published online 28 August 2015
Electric condensation of divalent counterions by humic acid nanoparticles 
Herman P. van Leeuwen and Raewyn M. Town

Environmental context. Humic acids are negatively charged soft nanoparticles that play a governing role in the speciation of many ionic and molecular compounds in the environment. The charge density in the humic acid nanoparticle can be very high and the binding of divalent cations such as Ca2+ appears to go far beyond traditional ion pairing or Poisson–Boltzmann electrostatics. A two-state approach, combining counterion condensation in the intraparticulate double layer and classical Donnan partitioning in the bulk of the particle, provides a satisfactory description of the physicochemical speciation.

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Published online 27 August 2015
Volatile selenium fluxes from selenium-contaminated sediments in an Australian coastal lake 
Michael J. Ellwood, Larissa Schneider, Jaimie Potts, Graeme E. Batley, John Floyd and William A. Maher

Environmental context. Methylation of sedimentary selenium to volatile dimethylselenide is a natural remediation process for contaminated aquatic systems. We present flux estimates for the loss of dimethylselenide from sediments of an anthropogenically affected lake and observe a 6-fold difference between late autumn–early winter and summer. The loss of dimethylselenide represents a significant sediment loss vector, of the same order as the diffusive loss flux for inorganic selenium across the sediment–water interface.

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    | Supplementary Material (316 KB)
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Published online 27 August 2015
Dimethylsulfoniopropionate in corals and its interrelations with bacterial assemblages in coral surface mucus 
P. R. Frade, V. Schwaninger, B. Glasl, E. Sintes, R. W. Hill, R. Simó and G. J. Herndl

Environmental context. Corals produce copious amounts of dimethylsulfoniopropionate (DMSP), a sulfur compound implicated in climate regulation. We studied DMSP concentrations inside corals and unveiled the linkage between DMSP availability and the abundance of DMSP-degrading bacterial groups inhabiting the corals’ surface. Our findings suggest that DMSP mediates the interplay between corals and microbes, highlighting the importance of sulfur compounds for microbial processes in corals and for the resilience of coral reef ecosystems.

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    | Supplementary Material (802 KB)
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Published online 18 August 2015
First national-scale reconnaissance of neonicotinoid insecticides in streams across the USA 
Michelle L. Hladik and Dana W. Kolpin

Environmental context. Neonicotinoids are under increased scrutiny because they have been implicated in pollinator declines and, more recently, as potential aquatic toxicants. Nevertheless, there is currently little information on concentrations of multiple neonicotinoids in surface water. This paper presents a summary of concentrations of six neonicotinoids in streams from across the United States in both urban and agricultural areas. These environmental data are important in determining the potential risk of neonicotinoids to non-target aquatic and terrestrial organisms.

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    | Supplementary Material (351 KB)
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Published online 18 August 2015
Dimethylsulfide model calibration in the Barents Sea using a genetic algorithm and neural network 
Bo Qu, Albert J. Gabric, Meifang Zeng and Zhifeng Lu

Environmental context. Future changes in marine biogenic aerosol emissions in Arctic seas are likely to affect the radiative budget of the region. Here we employ a calibrated biogeochemical model to simulate change in sulfate aerosol emissions in the Barents Sea, and find strong increases occur by the late 21st century. If replicated across the Arctic Ocean, such increases in sulfate aerosol loading to the Arctic atmosphere may decrease the rate of warming at polar latitudes.

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Published online 18 August 2015
Physical long-term regeneration dynamics of soil organic matter as followed by 1H solid-state NMR methods 
Alexander Jäger, Jette Schwarz, Yamuna Kunhi Mouvenchery, Gabriele E. Schaumann and Marko Bertmer

The mobility of soil organic matter and water molecules has a strong influence on the availability of fertilisers as well as on the fate of pollutants in soil. Magnetic resonance techniques identified two regimes of mobility change on the molecular level occurring on a timescale of 1 year after initially heating the sample. The results can help to understand the effect of soil type and water content for agricultural use and soil protection.

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    | Supplementary Material (97 KB)
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Published online 18 August 2015
Plastic pollution in Swiss surface waters: nature and concentrations, interaction with pollutants 
Florian Faure, Colin Demars, Olivier Wieser, Manuel Kunz and Luiz Felippe de Alencastro

Environmental context. Plastic, and particularly microplastic, pollution is a growing environmental concern worldwide. Research regarding marine environments has led to a substantial increase in knowledge, yet little is known as regards the situation in freshwater environments. Although the occurrence of microplastics was demonstrated in Lake Geneva in 2012, the present research aims at confirming this pollution and expanding the data set for other lakes and environments of Switzerland.

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Published online 14 August 2015
Can r-graphene oxide replace the noble metals in SERS studies: the detection of acrylamide 
Elad Segal and Aharon Gedanken

Environmental context. The need for detecting and sensing hazardous materials that can contaminate our food and water is growing each and every year. Regulation of these contaminants to safeguard human health depends on the ability to detect them at ultra-low concentrations in the environment. This work proposes a simple and efficient substrate preparation for detecting acrylamide, a toxic and carcinogenic material usually found in drinking water.

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    | Supplementary Material (286 KB)
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Published online 14 August 2015
Transformations that affect fate, form and bioavailability of inorganic nanoparticles in aquatic sediments 
Richard Kynaston Cross, Charles Tyler and Tamara S Galloway

Environmental context. Engineered nanomaterials are increasingly being used and their release to the aquatic environment poses potential risk. We review the research on transformations of engineered nanomaterial in the aquatic environment, and consider the implications of their release. The key factors defining the fate of engineered nanomaterials in aqueous systems are identified.

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Published online 14 August 2015
Questions of size and numbers in environmental research on microplastics: methodological and conceptual aspects 
Montserrat Filella

Environmental context. Microplastics, either purposefully manufactured or formed by fragmentation of discarded ‘end-of-life’ macroplastic items, are accumulating in environmental compartments. As more and more data are collected on microplastics in the environment, discussion of two issues has become indispensable: (i) how reliable are the results in terms of the inherent capabilities and limitations of current methods used for sampling, counting and measuring microplastic particles; and (ii) how can the fate of microplastics be understood in the context of natural particles and colloids?

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    | Supplementary Material (997 KB)
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Published online 06 August 2015
Beyond the ocean: contamination of freshwater ecosystems with (micro-)plastic particles 
Rachid Dris, Hannes Imhof, Wilfried Sanchez, Johnny Gasperi, François Galgani, Bruno Tassin and Christian Laforsch

Environmental context. Microplastics in freshwater ecosystems are an increasingly important environmental issue, with the few available studies suggesting high contamination worldwide. Reliable data on concentrations, fluxes and polymer types in continental aquatic environments, including urban water systems, are needed. High environmental and ecological risk polymers and associated or adsorbed chemicals have to be identified, as well as their effects on both organisms and ecosystems.

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Published online 06 August 2015
Focal plane array detector-based micro-Fourier-transform infrared imaging for the analysis of microplastics in environmental samples 
Martin Günter Joachim Löder, Mirco Kuczera, Svenja Mintenig, Claudia Lorenz and Gunnar Gerdts

Environmental context. Microplastics are of increasing environmental concern following reports that they occur worldwide from the arctic to the deep sea. However, a reliable methodology that facilitates an automated measurement of abundance and identity of microplastics is still lacking. We present an analytical protocol that applies focal plane array-based infrared imaging of microplastics enriched on membrane filters applicable to investigations of microplastic pollution of the environment.

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   |        Open Access Article
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Published online 05 August 2015
Characterisation of microplastics and toxic chemicals extracted from microplastic samples from the North Pacific Gyre 
Lorena M. Rios Mendoza and Patrick R. Jones

Environmental context. Microplastics are a new source of toxic compounds in marine and freshwater environments. This research documents the discovery of microplastic fibres in the seawater column and the chemical analysis of associated toxic chemicals in microplastic marine debris. Microplastic pollution is pervasive and hazardous.

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Published online 28 July 2015
Environmental effects on arsenosugars and arsenolipids in Ectocarpus (Phaeophyta) 
Ásta H. Pétursdóttir, Kyle Fletcher, Helga Gunnlaugsdóttir, Eva Krupp, Frithjof C. Küpper and Jörg Feldmann

Environmental context. Arsenolipids, which are present in seaweed, can show high toxicity, emphasising the need for more information on these compounds. We investigated the effects of different stress factors on the arsenic compounds formed by cultures of brown algae, and compared the results with those from field-collected samples. We show that the arsenolipid and arsenosugar profiles differ depending on the experimental conditions, and that a deficiency in phosphate has a direct positive effect on the biosynthesis of arsenic-containing phospholipids.

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   | Supplementary Material (3.3 MB)  |        Open Access Article
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Published online 28 July 2015
Effects of myo-inositol hexakisphosphate and orthophosphate adsorption on aggregation of CeO2 nanoparticles: roles of pH and surface coverage 
Biao Wan, Yupeng Yan, Fan Liu, Wenfeng Tan, Jiajie He and Xionghan Feng

Environmental context. To understand the behaviour and fate of nanoparticles (NPs) in the natural environment requires knowledge of their aggregation state under environmentally relevant conditions. This work investigates the influence of myo-inositol hexakisphosphate and phosphate on the colloidal stability of CeO2 NPs, and shows that adsorption of organic and inorganic phosphorus plays an important role on the interaction between the nanoparticles. Surface phosphorus coverage should be considered when predicting the fate of CeO2 NPs and other similar NPs in the environment.

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    | Supplementary Material (775 KB)
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Published online 28 July 2015
Double-functionalised magnetic nanoparticles for efficient extraction of bisphenol A from river water 
Yipei Sheng, Huaqin Guan, Yanfang Zhang, Xuemei Zhang, Qingqing Zhou and Zhenkun Lin

Environmental context. Conventional pre-treatment methods are usually ineffective for the extraction of bisphenol A (BPA) from environmental water samples. We report that a novel magnetic nanoparticle with double-functionalisation is an excellent solid-phase adsorbent for extracting BPA from river water samples. This study provides a simple but efficient approach for extraction of low-concentration pollutants from water samples.

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Published online 24 July 2015
Distributions of neonicotinoid insecticides in the Commonwealth of Massachusetts: a temporal and spatial variation analysis for pollen and honey samples 
Chensheng (Alex) Lu, Chi-Hsuan Chang, Lin Tao and Mei Chen

Environmental context. Neonicotinoids are a group of widely used insecticides that have been implicated in the deterioration of honeybee health and the declining number of honeybee colonies worldwide. We wanted to find out whether neonicotinoids are commonly present in pollen and honey, which are the main food sources for bees. The results show that neonicotinoids are ubiquitous in the environment where bees foraged, and therefore could pose risks to honeybee health.

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Published online 21 July 2015
Microplastic contamination in an urban area: a case study in Greater Paris 
Rachid Dris, Johnny Gasperi, Vincent Rocher, Mohamed Saad, Nicolas Renault and Bruno Tassin

Environmental context. Plastics production has increased considerably in the last years, leading to pollution by plastics, including microplastics (comprising particles smaller than 5 mm). This work addresses the issue of microplastics from urban sources in Greater Paris and its effect on receiving waters. Microplastics were found in all urban compartments investigated, namely atmospheric fallout, waste- and treated water, and surface water.

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Published online 10 July 2015
Phosphorus and arsenic distributions in a seasonally stratified, iron- and manganese-rich lake: microbiological and geochemical controls 
Adam Hartland, Martin S. Andersen and David P. Hamilton

Environmental context. Despite being present at trace concentrations, arsenic and phosphorus are among the most important of freshwater contaminants. This research highlights the biogeochemical coupling of both elements in a New Zealand lake. We find that the mineralisation of organic residues coupled to the dissolution of colloidal iron and manganese hydroxides may be an important driver of the bioavailability of phosphorus and arsenic.

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    | Supplementary Material (136 KB)
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Published online 10 July 2015
Voltammetric tools for trace element speciation in fresh waters: methodologies, outcomes and future perspectives 
Damiano Monticelli and Salvatore Caprara

Environmental context. Trace elements are ubiquitous in natural waters where their levels are highly variable depending on natural factors and anthropogenic pollution. The chemical form of the element determines its behaviour in the environment and whether it is likely to pose a risk to environmental and human health. This paper focuses on elemental forms in freshwater systems: it reviews analytical methods, gathers available data, and assesses trends, needs and open issues in this field.

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    | Supplementary Material (460 KB)
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Published online 08 July 2015
Air pollution: new insight from direct measurements of ozone production 
Piero Di Carlo
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Published online 01 June 2015
Dissolution of mixed amorphous–crystalline Cd-containing Fe coprecipitates in the presence of common organic ligands 
Carla E. Rosenfeld and Carmen E. Martínez

Environmental context. Common soil minerals, which often contain trace metals in contaminated environments, are thought to limit metal-related risks in the environment. We studied the stability of these contaminated minerals and found that the presence of plant-derived organic compounds can alter contaminant availability in such environments. Understanding how soluble organics may change trace metal availability helps to predict risk and potentially remediate such environments more efficiently.

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    | Supplementary Material (396 KB)
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Published online 25 May 2015
Interaction of humic acids with soil minerals: adsorption and surface aggregation induced by Ca2+ 
Nanci Kloster and Marcelo Avena

Environmental context. Humic acids, important components of natural organic matter in soils, sediments and aquatic media, can interact with the surface of minerals affecting key environmental processes. In the presence of calcium, humic acids can also interact among themselves leading to molecular aggregates. We demonstrate that a solid mineral surface facilitates the formation of humic acid aggregates, and thus surface aggregation occurs under conditions where normal aggregation in solution does not occur.

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    | Supplementary Material (295 KB)
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Published online 20 May 2015
Change in chirality of semiconducting single-walled carbon nanotubes can overcome anionic surfactant stabilisation: a systematic study of aggregation kinetics 
Iftheker A. Khan, Joseph R. V. Flora, A. R. M. Nabiul Afrooz, Nirupam Aich, P. Ariette Schierz, P. Lee Ferguson, Tara Sabo-Attwood and Navid B. Saleh

Environmental context. Chirally enriched semiconducting single-walled carbon nanotubes (SWNTs) are some of the most utilised nanomaterials. Although chirality of SWNTs is known to influence their electronic properties and interfacial interaction, the interplay between chirality and surfactant structure in SWNT stability is not well understood. This study investigates these interactions, providing data to better assess the environmental fate of SWNTs.

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Published online 20 May 2015
Effect of fluctuating oxygen concentration on iron oxidation at the pelagic ferrocline of a meromictic lake 
Jenny Bravidor, Julika Kreling, Andreas Lorke and Matthias Koschorreck

Environmental context. The cycling of iron plays an important role in pelagic boundary zones such as the oxic–anoxic interface where physical and chemical gradients occur. The turnover of iron in this zone depends on oxygen fluctuation and the duration of the fluctuation event. This study increases the understanding of biogeochemical iron transformation in such hotspots.

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Published online 20 April 2015
Adsorption of trace metals by microplastic pellets in fresh water 
Andrew Turner and Luke A. Holmes

Environmental context. Although microplastics are known to adsorb and transport contaminants in the aquatic environment, there is no information on the significance of the effect in fresh waters. We studied the adsorption of metals to new and aged plastic pellets in river water, and show interactions that are dependent on time, pH and metal concentration. Because metals have a higher affinity for aged pellets than for new pellets, weathered microplastics could represent a significant vehicle for the transport of metals in aquatic environments.

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blank image Environmental Chemistry
Volume 12 Number 4 2015
Naturally Produced Organohalogens – Atmosphere and Soil

 
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Foreword to the Special Issue on ‘Naturally Produced Organohalogens – Atmosphere and Soil’ 
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Heinz Friedrich Schöler , Cornelius Zetzsch and Andreas Kappler
pp. i-ii
 
 

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Iron-catalysed oxidation and halogenation of organic matter in nature 
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Peter Comba , Marion Kerscher , Torsten Krause and Heinz Friedrich Schöler
pp. 381-395

Environmental context. Natural organohalogens produced in and released from soils are of utmost importance for ozone depletion in the stratosphere. Formation mechanisms of natural organohalogens are reviewed with particular attention to recent advances in biomimetic chemistry as well as in radical-based Fenton chemistry. Iron-catalysed oxidation in biotic and abiotic systems converts organic matter in nature to organohalogens.

 
 

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A recent survey of naturally occurring organohalogen compounds 
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Gordon W. Gribble
pp. 396-405

Environmental context. The general perception that nature does not produce compounds containing halogens – chlorine, bromine, iodine and fluorine – is now known to be erroneous. Modern isolation and identification techniques have led to the discovery of more than 5000 halogen-containing compounds from myriad marine and terrestrial plant and animal sources. Many of these compounds possess extraordinary biological activity, including anticancer, antiviral and antibacterial activity of potential human benefit.

 
  
 

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Halogenated hydrocarbon formation in a moderately acidic salt lake in Western Australia – role of abiotic and biotic processes 
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A. Ruecker , P. Weigold , S. Behrens , M. Jochmann , X. L. Osorio Barajas and A. Kappler
pp. 406-414

Environmental context. Volatile halogenated organic compounds (VOX) contribute to ozone depletion and global warming. Here we demonstrate that acidic salt lake sediments in Western Australia contribute to the global natural emission of these compounds and that the emissions are primarily of biotic origin. Elucidating major sources and sinks of VOX is a key task in environmental chemistry because their formation and degradation have major effects on atmospheric chemistry and thus earth climate.

 
 

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Thermolytic degradation of methylmethionine and implications for its role in DMS and MeCl formation in hypersaline environments 
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Ines Mulder , Torsten Krause , Tobias Sattler , Christoph Tubbesing , Sabine Studenroth , Krzysztof Bukowski , Elliot Atlas and Heinz F. Schöler
pp. 415-425

Environmental context. Methyl chloride and dimethyl sulfide are important atmospheric trace gases, but their biogeochemical contributions to the atmosphere are not fully understood. The amino acid derivative methyl methionine has been hypothesised to be a precursor of these two atmospheric gases, especially in drying salt-lake environments. We found methyl chloride and dimethyl sulfide in salt crystals and soils samples of hypersaline lakes, suggesting that a thermal decay of methyl methionine could be one of the formation mechanisms responsible.

 
  
 

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Seasonal changes in chlorine and methoxyl content of leaves of deciduous trees and their impact on release of chloromethane and methanol at elevated temperatures 
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W. Colin McRoberts , Frank Keppler , David B. Harper and John T. G. Hamilton
pp. 426-437

Environmental context. Chloromethane is the most abundant naturally produced chlorine-containing organic compound, responsible for ~16 % of chlorine-catalysed stratospheric ozone destruction. A significant source of this gas is emission from biomass by reaction between chloride ion and methoxyl groups of the biopolymers pectin and lignin. The seasonal changes in the chlorine and methoxyl pools observed in leaves of several deciduous tree species have implications for understanding chlorine volatilisation during biomass burning and estimation of the global chloromethane budget.

 
    | Supplementary Material (696 KB)
 

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Vertical distribution of BrO in the boundary layer at the Dead Sea 
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Robert Holla , Stefan Schmitt , Udo Frieß , Denis Pöhler , Jutta Zingler , Ulrich Corsmeier and Ulrich Platt
pp. 438-460

Environmental context. Reactive halogen species affect chemical processes in the troposphere in many ways. The reactive bromine species bromine monoxide (BrO) is found in high concentrations at the Dead Sea, but processes for its formation and its spatial distribution are largely unknown. Information on the vertical distribution of BrO at the Dead Sea obtained in this work may give insight into the processes leading to BrO release and its consequences.

 
  
 

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Iron(III)-induced activation of chloride from artificial sea-salt aerosol 
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Julian Wittmer , Sergej Bleicher , Johannes Ofner and Cornelius Zetzsch
pp. 461-475

Environmental context. Inorganic, natural aerosols (sea-salt, mineral dust, glacial flour) and contributions of anthropogenic components (fly ash, dust from steel production and processing, etc.) contain iron that can be dissolved as FeIII in saline media. This study investigates photochemical processes in clouds and aerosols producing gas-phase Cl as a function of salt- and gas-phase composition employing a simulation chamber. Atomic Cl may contribute to the oxidative capacity of the troposphere, and our findings imply local sources.

   | Supplementary Material (804 KB)  |        Open Access Article
 

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Consumption of reactive halogen species from sea-salt aerosol by secondary organic aerosol: slowing down the bromine explosion 
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Joelle Buxmann , Sergej Bleicher , Ulrich Platt , Roland von Glasow , Roberto Sommariva , Andreas Held , Cornelius Zetzsch and Johannes Ofner
pp. 476-488

Environmental context. Secondary organic aerosols together with sea-salt aerosols are a major contribution to global aerosols and influence the release of reactive halogens, which affect air quality and human health. In this study, the loss of reactive halogen species from simulated salt aerosols due to three different types of secondary organic aerosols was quantified in chamber experiments and investigated with the help of a numerical model. The loss rate can be included into chemistry models of the atmosphere and help to quantify the halogen budget in nature.

 
  
 

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New particle formation above a simulated salt lake in aerosol chamber experiments 
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K. A. Kamilli , J. Ofner , B. Lendl , P. Schmitt-Kopplin and A. Held
pp. 489-503

Environmental context. Deforestation in Western Australia beginning in the mid-19th century led to a considerable change of the land surface, and Western Australia is now suffering more often from droughts. Particle formation induced by salt lakes has been identified as a potential control factor for changed precipitation patterns. This study aims to determine key factors involved in the particle formation process by simulating a simplified salt lake in an aerosol chamber in the laboratory.

 
 

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Isotopic composition of polyhalomethanes from marine macrophytes – systematic effects of the halogen substituents on isotopic composition 
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Enno Bahlmann , Christian Stolle , Ingo Weinberg , Richard Seifert , Detlef E. Schulz-Bull and Walter Michaelis
pp. 504-514

Environmental context. Once released to the atmosphere, halocarbons are involved in key chemical reactions. Stable carbon isotope measurements of halocarbons can provide valuable information on their sources and fate in the atmosphere. Here, we report δ13C values of 13 polyhalomethanes released from brown algae, which may provide a basis for inferring their sources and fate in future studies.

   | Supplementary Material (344 KB)
 

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Dynamics of halocarbons in coastal surface waters during short term mesocosm experiments 
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Anna Orlikowska , Christian Stolle , Falk Pollehne , Klaus Jürgens and Detlef E. Schulz-Bull
pp. 515-525

Environmental context. Halocarbons are trace gases important in atmospheric ozone chemistry whose biogenic production – among other factors – depends on light-induced stress of marine algae. Several studies have confirmed this effect in laboratory experiments but knowledge in natural systems remains sparse. In mesocosm experiments, which are a link between field and laboratory studies, we observed that the influence of natural levels of ultraviolet radiation on halocarbon dynamics in the marine surface waters was either insignificant or concealed by the complex interactions in the natural systems.

 
    | Supplementary Material (138 KB)
 

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These articles have been peer reviewed and accepted for publication. They are still in production and have not been edited, so may differ from the final published form.

    EN15057  Accepted 23 August 2015
    Copper and Zinc Aging in Soils for a Decade: Changes in Metal Extractability and Phytotoxicity
    Murray McBride, Meifang Cai
    Abstract


    EN15069  Accepted 07 July 2015
    Marine microplastic-associated biofilms - a review
    Sonja Oberbeckmann, Martin Löder, Matthias Labrenz
    Abstract


    EN15042  Accepted 14 August 2015
    Isotopic evidence for the origin of DMS and DMSP-like compounds in a warm-monomictic freshwater lake
    Michal Sela-Adler, Ward Said-Ahmad, Orit Sivan, Werner Eckert, Ronald Kiene, Alon Amrani
    Abstract


    EN15124  Accepted 31 July 2015
    Evaluating the concentration addition approach for describing expected toxicity of a ternary metal mixture (Ni, Cu, Cd) using metal speciation and response surface regression
    Yamini Gopalapillai, B Hale
    Abstract


    EN15104  Accepted 31 July 2015
    Developing a sentinel mollusc species for toxicity assessment: Metal exposure, dose and response - laboratory versus field exposures and resident organisms
    Anne Taylor, Bill Maher
    Abstract


    EN15086  Accepted 31 July 2015
    Derivation of ecological standards for risk assessment of molybdate in soil
    Koen Oorts, Erik Smolders, Steve McGrath, Kees van Gestel, Mike McLaughlin, Sandra Carey
    Abstract


    EN15076  Accepted 18 July 2015
    Theoretical Study of the Gaseous Hydrolysis of NO2 in the Presence of NH3 as a Source of Atmospheric HONO
    Xu Wang, Feng-Yang Bai, Yan-Qiu Sun, Rong-Shun Wang, Xiu-Mei Pan, Fu-Ming Tao
    Abstract


    EN15111  Accepted 16 July 2015
    Metal speciation from stream to open ocean: modelling vs measurement
    Edward Tipping, Stephen Lofts, Anthony Stockdale
    Abstract


    EN15045  Accepted 13 July 2015
    Revising upper-ocean sulfur dynamics near Bermuda: New lessons from three years of concentration and rate measurements
    Naomi Levine, Dierdre Toole, Aimee Neeley, Nicholas Bates, Scott Doney, John Dacey
    Abstract


    EN14268  Accepted 13 July 2015
    Ocean acidification has different effects on the production of DMS and DMSP measured in cultures of Emiliania huxleyi and a mesocosm study: a comparison of laboratory monocultures and community interactions
    Alison Webb, Gill Malin, Frances Hopkins, Kai Lam Ho, Ulf Riebesell, Kai Schulz, Aud Larsen, Peter Liss
    Abstract


    EN15003  Accepted 08 July 2015
    Does Natural Organic Matter Increase Bioavailability of Cerium Dioxide Nanoparticles to Fish?
    Rhys Goodhead, Blair Johnston, Paula Cole, Mohammed Baalousha, Dave Hodgson, Taisen Iguchi, Jamie Lead, Charles Tyler
    Abstract


    EN14152  Accepted 22 June 2015
    Relationship of arsenic speciation and bioavailability in mine wastes for human health risk assessment
    Violet Diacomanolis, Barry Noller, Raijeli Taga, Hugh Harris, Jade Aitken, Jack Ng
    Abstract


    EN15066  Accepted 21 June 2015
    Revisited: DGT speciation analysis of metal/humic acid complexes
    Herman van Leeuwen
    Abstract


    EN15052  Accepted 18 June 2015
    Assessment of DMSP turnover reveals a non-bioavailable pool of dissolved DMSP in coastal waters of the Gulf of Mexico
    Chengxuan Li, Guipeng Yang, David Kieber, Jessie Motard-Côté, Ronald Kiene
    Abstract


    EN15046  Accepted 15 June 2015
    Bioaccumulation trends of arsenic and antimony in a freshwater ecosystem impacted by mine drainage
    Meghan Dovick, Thomas Kulp, Robert Arkle, David Pilliod
    Abstract


    EN14275  Accepted 02 June 2015
    Effects of iron limitation and UV radiation on Phaeocystis antarctica growth and DMSP, DMSO, and acrylate concentrations
    Joanna Kinsey, David Kieber, Patrick Neale
    Abstract


    EN14255  Accepted 02 June 2015
    Evaluation of diverse approaches for estimating sea surface DMS concentration and air-sea exchange at global scale
    Jan-Erik Tesdal, James Christian, Adam Monahan, Knut von Salzen
    Abstract


    EN14258  Accepted 28 May 2015
    Dimethylated sulfur compounds in coral-reef ecosystems
    Elisabeth Deschaseaux, Graham Jones, Hilton Swan
    Abstract


    EN14190  Accepted 28 May 2015
    Determination of cupric ion concentrations in marine waters: an improved procedure and comparison with other speciation methods
    Tara Tait, Lisa Rabson, Rachael Diamond, Christopher Cooper, James McGeer, Scott Smith
    Abstract


    EN15037  Accepted 20 May 2015
    Effects of environmental changes, tissue types, and reproduction on the emissions of dimethyl sulfide from seaweeds that form green tides
    Kathryn Van Alstyne, Sue-Ann Gifford, Jenna Dohman, Monique Savedo
    Abstract


    EN15035  Accepted 20 May 2015
    Characterisation of bioaccumulation dynamics of three differently coated silver nanoparticles and aqueous silver in a simple freshwater food chain
    Judit Kalman, Kai Paul, Farhan Khan, Vicki Stone, Teresa Fernandes
    Abstract


    EN15025  Accepted 20 May 2015
    Biogeochemistry of dimethylsulfoniopropionate, dimethylsulfide and acrylic acid in the Yellow Sea and the Bohai Sea during autumn
    Yue Liu, Chun-ying Liu, Guipeng Yang, Hong-Hai Zhang, Sheng-Hui Zhang
    Abstract


    EN14266  Accepted 20 May 2015
    Spatial variability of dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) in the southern Gulf of Mexico
    MARIA DE LA LUZ ESPINOSA-FUENTES, AMPARO MARTINEZ, OSCAR PERALTA, TELMA CASTRO
    Abstract


    EN14265  Accepted 20 May 2015
    Effects of light and phosphorus on summer DMS dynamics in subtropical waters using a global ocean biogeochemical model
    Italo Masotti, Sauveur Belviso, Laurent Bopp, Alessandro Tagliabue, Eva Bucciarelli
    Abstract


    EN15029  Accepted 13 May 2015
    Geochemical controls on aluminium concentrations in coastal waters
    Brad Angel, Simon Apte, Graeme Batley, Lisa Golding
    Abstract


    EN14270  Accepted 12 May 2015
    Environmental control of dimethylsulfoxide (DMSO) cycling under ocean acidification
    Cathleen Zindler-Schlundt, Hannah Lutterbeck, Sonja Endres, Hermann Bange
    Abstract


    EN14234  Accepted 08 May 2015
    Occurrence, relative abundance and spatial distribution of microplastics and zooplankton NW of Sardinia in the Pelagos Sanctuary Protected Area, Mediterranean Sea
    Cristina Panti, Matteo Giannetti, Matteo Baini, Fabrizio Rubegni, Roberta Minutoli, Maria Cristina Fossi
    Abstract


    EN15073  Accepted 07 May 2015
    Iron isotope composition of aqueous phases of a lowland environment
    Stephan Schuth, Tim Mansfeldt
    Abstract


    EN15041  Accepted 07 May 2015
    Are humans exposed to increasing amounts of unidentified organofluorine?
    Leo Yeung, S. Mabury
    Abstract


    EN14267  Accepted 07 May 2015
    Exceptional accumulation and retention of dimethylsulfoniopropionate by molluscs
    Richard Hill, John Dacey
    Abstract


    EN14221  Accepted 03 April 2015
    A steady-state physiological model for intracellular dimethylsulfoxide concentrations in marine phytoplankton
    Michel Lavoie, Maurice Levasseur, William Sunda
    Abstract


    EN15013  Accepted 26 March 2015
    Synthesis, characterization and aquatic ecotoxicity of the UV filter diethylaminohydroxybenzoylbenzoate (DHHB) and its chlorinated by-products
    Gorica Grbović, Olga Malev, Darko Dolenc, Roberta Sauerborn Klobučar, Želimira Cvetković, Bruno Cvetković, Branimir Jovančićević, Polonca Trebse
    Abstract


32


The Most Read ranking is based on the number of downloads from the CSIRO PUBLISHING website of articles published in the previous 12 months. Usage statistics are updated daily.

Rank Paper Details
1. Published 25 August 2014
Observations and assessment of iron oxide and green rust nanoparticles in metal-polluted mine drainage within a steep redox gradient

Carol A. Johnson, Gina Freyer, Maria Fabisch, Manuel A. Caraballo, Kirsten Küsel and Michael F. Hochella

2. Published 22 May 2015
Chemical and bioanalytical assessment of coal seam gas associated water

Janet Y. M. Tang, Mauricio Taulis, Jacinta Edebeli, Frederic D. L. Leusch, Paul Jagals, Gregory P. Jackson and Beate I. Escher

3. Published 25 August 2014
The persistence and transformation of silver nanoparticles in littoral lake mesocosms monitored using various analytical techniques

Lindsay M. Furtado, Md Ehsanul Hoque, Denise M. Mitrano, James F. Ranville, Beth Cheever, Paul C. Frost, Marguerite A. Xenopoulos, Holger Hintelmann and Chris D. Metcalfe

4. Published 25 August 2014
Separation, detection and characterisation of engineered nanoparticles in natural waters using hydrodynamic chromatography and multi-method detection (light scattering, analytical ultracentrifugation and single particle ICP-MS)

Kim Proulx and Kevin J. Wilkinson

5. Published 28 January 2015
Multi-elemental scanning transmission X-ray microscopy–near edge X-ray absorption fine structure spectroscopy assessment of organo–mineral associations in soils from reduced environments

Chunmei Chen and Donald L. Sparks

6. Published 22 May 2015
In vitro cytotoxicity assessment of a hydraulic fracturing fluid

Madeleine E. Payne, Heather F. Chapman, Janet Cumming and Frederic D. L. Leusch

7. Published 25 August 2014
Current status and future direction for examining engineered nanoparticles in natural systems

Manuel D. Montaño, Gregory V. Lowry, Frank von der Kammer, Julie Blue and James F. Ranville

8. Published 28 January 2015
FeIIaq–FeIIIoxide electron transfer and Fe exchange: effect of organic carbon

Timothy Pasakarnis, Michael L. McCormick, Gene F. Parkin, Aaron Thompson and Michelle M. Scherer

9. Published 25 March 2015
Dissolution of metal and metal oxide nanoparticles under natural freshwater conditions

Niksa Odzak, David Kistler, Renata Behra and Laura Sigg

10. Published 25 August 2014
Analysis of soil organic matter at the solid–water interface by nuclear magnetic resonance spectroscopy

Stephanie C. Genest, Myrna J. Simpson, André J. Simpson, Ronald Soong and David J. McNally

11. Published 25 March 2015
Measurement of labile arsenic speciation in water and soil using diffusive gradients in thin films (DGT) and X-ray absorption near edge spectroscopy (XANES)

Trang Huynh, Hugh H. Harris, Hao Zhang and Barry N. Noller

12. Published 25 March 2015
Interpretation of heavy metal speciation in sequential extraction using geochemical modelling

Yanshan Cui and Liping Weng

13. Published 28 January 2015
Ligand- and oxygen-isotope-exchange pathways of geochemical interest

William H. Casey

14. Published 25 March 2015
Use of diffusive gradients in thin-films for studies of chemical speciation and bioavailability

Hao Zhang and William Davison

15. First national-scale reconnaissance of neonicotinoid insecticides in streams across the USA

Michelle L. Hladik and Dana W. Kolpin

16. Published 3 October 2014
Arsenic mobility and toxicity in South and South-east Asia – a review on biogeochemistry, health and socio-economic effects, remediation and risk predictions

E. Marie Muehe and Andreas Kappler

17. Published 16 December 2014
Synchrotron X-ray absorption spectroscopy analysis of arsenic chemical speciation in human nail clippings

Olena Ponomarenko, Mihai R. Gherase, Mark S. LeBlanc, Chang-Yong Kim, Elstan D. Desouza, Michael J. Farquharson, Fiona E. McNeill, Susan Nehzati, Ingrid J. Pickering, Graham N. George and David E. B. Fleming

18. Published 25 August 2014
Recalcitrant pharmaceuticals in the aquatic environment: a comparative screening study of their occurrence, formation of phototransformation products and their in vitro toxicity

Marlies Bergheim, Richard Gminski, Bernd Spangenberg, Malgorzata Dębiak, Alexander Bürkle, Volker Mersch-Sundermann, Klaus Kümmerer and Reto Gieré

19. Published 16 December 2014
A critical review of nanohybrids: synthesis, applications and environmental implications

Nirupam Aich, Jaime Plazas-Tuttle, Jamie R. Lead and Navid B. Saleh

20. Distributions of neonicotinoid insecticides in the Commonwealth of Massachusetts: a temporal and spatial variation analysis for pollen and honey samples

Chensheng (Alex) Lu, Chi-Hsuan Chang, Lin Tao and Mei Chen


      
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