Environmental context. Lipids released from lysis of phytoplankton cells are enriched in the sea surface microlayer. Such surface-active organics can be transferred through bursting bubbles to sea-spray aerosols where they can influence atmospheric chemistry. The results presented here suggest that phospholipids combine more readily with SO42− than with Br−, leading to enrichment of organic-coated sulfate salts in marine aerosols.
Volume 14 Number 7 2017
EN17129Isolation and purification treatments change the metal-binding properties of humic acids: effect of HF/HCl treatment
Environmental context. Studying the mechanism of binding between metals and natural organic matter is fundamental to understanding the transport and availability of these contaminants in the environment. The influence of sample treatment on the purification of organic matter showed significant differences in the interaction with metals. The results will contribute to improved modelling of metal binding to organic matter in soils, thereby providing a basis for a more realistic risk assessment.
EN17130Impacts of elevated pCO2 on trace gas emissions in two microalgae: Phaeocystis globosa and Nitzschia closterium
Environmental context. Ocean acidification can affect marine microalgae, which can produce climate-active trace gases such as dimethylsulfide and various halocarbons. We conducted monoculture experiments simulating future ocean acidification, and showed that trace gas emissions are affected by elevated pCO2 to different degrees. The responses of trace gases to elevated pCO2 are compound- and species-specific.
EN17155Aqueous-phase photooxygenation of enes, amines, sulfides and polycyclic aromatics by singlet (a1Δg) oxygen: prediction of rate constants using orbital energies, substituent factors and quantitative structure–property relationships
Environmental context. To aid the transition to sustainable chemistry there is a need to improve the degradability of chemicals and limit the use of organic solvents. Singlet oxygen, 1O2, is involved in organic synthesis and photochemical degradation; however, information on its aqueous-phase reactivity is limited. We developed cheminformatics models for photooxidation rate constants that will enable accurate assessment of aquatic photochemistry without experimentation.
EN17138A silver fibre prepared by a facile method for solid-phase microextraction of polycyclic aromatic hydrocarbons
Environmental context. Polycyclic aromatic hydrocarbons are widespread environmental contaminants of human health concern because of their carcinogenicity. The compounds have low water solubility and thus their measurement in water requires an efficient preconcentration step. We report a simple method for concentrating polycyclic aromatic hydrocarbons from environmental water samples based on their absorption onto a silver fibre.
Environmental context. Mercury (Hg) is a major environmental contaminant due to its toxicity, accumulation and biomagnification along the food chain. We demonstrate that Hg accumulation by biofilms, one possible entry point for Hg into food webs, is rapid and depends on biofilm structure and composition. These findings have important implications for the understanding of Hg bioavailability and effects towards aquatic microorganisms.
The peer-reviewed and edited version of record published online before inclusion in an issue
Environmental context. Redox potential is a controlling variable in aquatic chemistry. Through time series data, we show that microbial exudates released by bacteria may control trends in redox potential observed in natural waters. In particular, electron transfer between these exudates and the electrode could explain the values measured in the presence of abundant oxidants such as oxygen and nitrate.
Environmental context. Microbes play key roles in controlling acidification and metal toxicity in coastal acid-sulfate soils. We characterised the time-dependent metabolic activities of abundant and rare taxa in acidifying tidal wetlands and showed that rare taxa exhibiting higher activity may exert significant influence on iron- and sulfur-cycling. Our findings yield new insights into the drivers and timing of iron- and sulfur-cycling in coastal acid-sulfate systems.
EN17114Degradation of pentachlorophenol as a model hazardous and recalcitrant organochlorinated pollutant using AgIII
Environmental context. Electrochemistry offers potential applications for environmental remediation. Pentachlorophenol, a highly toxic and recalcitrant halogenated compound, is degraded by a novel oxidant produced electrochemically, and the intermediates and products of the degradation are investigated. Cyclic remediation systems merit further study.
Environmental context Episodic extreme rainfall events may affect metal dynamics in rivers flowing within historical metal mining areas. This study provides an analysis of the water chemistry and geochemical processes associated with mobilisation of metals during episodic rainfall events. Findings could be used to assess the environmental quality of streams draining spoil waste areas with similar geochemical conditions, and thereby be used to guide future management strategies.
Environmental context Fulvic acids are important naturally occurring organic materials, but unravelling their complex structures remains challenging. This paper suggests chemical analyses to facilitate structural studies of fulvic acids, and to investigate the similarities and differences of fulvic acids from various natural sources.
EN17137Activation of sodium percarbonate with ferrous ions for degradation of chlorobenzene in aqueous solution: mechanism, pathway and comparison with hydrogen peroxide
Environmental context. It is practicable to remediate chlorobenzene-contaminated groundwater by in situ chemical oxidation. This study shows highly efficient degradation of chlorobenzene by an Fe-based process in a wide range of pH values. The technology is feasible for the removal of chlorobenzene from aqueous solutions and is appropriate for remediation of groundwater.
EN17161Analysis of trichloroethene vapour in soil-gas samples using solid-sorbent tubes with gas chromatography/mass spectrometry
Environmental context. Chlorinated chemicals are priority contaminants that pose significant risk to human health, and require state-of-the-art sampling techniques for varying matrices. A soil-gas sampling method was developed for the quantification of vapours of trichloroethene, a major chlorinated contaminant, present just above the groundwater zone. The method addresses sampling times, volumes and low-level trichloroethene concentrations.
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.
Accumulation of trace elements within Vitis vinifera L. varieties cultivated in Biscay (Basque Country) for txakoli production: A two-year case study
Transfer of perfluorooctanesulfonate (PFOS), decabrominated diphenyl ether (BDE-209) and dechlorane plus (DP) from biosolid amended soils to leachate and runoff water
In-Situ Sampling of Available Calcium Using Diffusive Gradients in Thin-Films Technique Based on Benzo-Crown Ether-Functionalized Silica as the Binding Agent
Development of a new smog chamber for studying the impact of different UV lamps on SAPRC chemical mechanism predictions and aerosol formation
Molecular characterization of ambient aerosols by sequential solvent extractions and high resolution mass spectrometry
Distribution of organic carbon possible causes and their impacts in Pangani River Basin’s (PRB) ecosystem - Tanzani
Antimony in the Lot-Garonne River system: A fourteen-year record of solid/liquid partitioning and fluxes
A rapid method for the analysis of perfluorinated alkyl substances in serum by hybrid solid phase extraction
Evaluation of the co-solvent effect of diethylene glycol on polycyclic aromatic hydrocarbons and heavy metals in produced formation water of offshore gas platforms
Evaluation of uptake mechanisms of phosphate by Fe(III)(oxyhydr)oxides in Early Proterozoic oceanic conditions
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Environmental Chemistry 14 (7)Siyang Li, Lin Du, Wenxing Wang
Environmental Chemistry 14 (6)Nicole Bandow, Verena Will, Volker Wachtendorf, Franz-Georg Simon
Synchrotron X-ray absorption spectroscopy reveals antimony sequestration by reduced sulfur in a freshwater wetland sedimentEnvironmental Chemistry 14 (6)William W. Bennett, Kerstin Hockmann, Scott G. Johnston, Edward D. Burton
Isolation and purification treatments change the metal-binding properties of humic acids: effect of HF/HCl treatmentEnvironmental Chemistry 14 (7)Wander G. Botero, Michael Pineau, Noémie Janot, Rute F. Domingos, José Mariano, Luciana S. Rocha, Jan E. Groenenberg, Marc F. Benedetti, José P. Pinheiro
Impacts of elevated pCO2 on trace gas emissions in two microalgae: Phaeocystis globosa and Nitzschia closteriumEnvironmental Chemistry 14 (7)Pei-Feng Li, Gui-Peng Yang, Jing Zhang, Maurice Levasseur, Chun-Ying Liu, Jing Sun, Wei Yang
Environmental Chemistry 14 (4)Zhenlan Xu, Lingxiangyu Li, Bernhard Henkelmann, Karl-Werner Schramm
Environmental Chemistry 14 (7)Perrine Dranguet, Vera I. Slaveykova, Séverine Le Faucheur
Aqueous-phase photooxygenation of enes, amines, sulfides and polycyclic aromatics by singlet (a1Δg) oxygen: prediction of rate constants using orbital energies, substituent factors and quantitative structure–property relationshipsEnvironmental Chemistry 14 (7)Tom M. Nolte, Willie J. G. M. Peijnenburg
Environmental Chemistry (Online Early)Magaly Valencia-Avellan, Rebecca Slack, Anthony Stockdale, Robert John George Mortimer
Environmental Chemistry 14 (6)Wen-Qing Cao, Jun Song, Gui-Peng Yang
Catalytic activity and mechanism of ordered mesoporous iron oxides on hydrogen peroxide for degradation of norfloxacin in water at neutral pHEnvironmental Chemistry 14 (6)Zhen Yuan, Minghao Sui, Jianrui Yang, Pan Li, Zhiran Liu, Li Sheng
A silver fibre prepared by a facile method for solid-phase microextraction of polycyclic aromatic hydrocarbonsEnvironmental Chemistry 14 (7)Yu Tian, Jie Zhou, Juanjuan Feng, Xiuqin Wang, Chuannan Luo, Min Sun
Environmental Chemistry 14 (6)Matthew S. Siderhurst, Soo J. Park, Ian M. Jamie, Stefano G. De Faveri
Characterisation of extracellular polymeric substances from different cyanobacterial species and their influence on biocalcification processesEnvironmental Chemistry 14 (4)Xiaomin Li, Kemeng Luo, Jinqian Ren, Xiangrui Wang, Qian Mu, Wenhong Fan
The relationship between inner surface potential and electrokinetic potential from an experimental and theoretical point of viewEnvironmental Chemistry 14 (5)Tajana Preočanin, Danijel Namjesnik, Matthew A. Brown, Johannes Lützenkirchen
Studying selenium and sulfur volatilisation by marine algae Emiliania huxleyi and Thalassiosira oceanica in cultureEnvironmental Chemistry 14 (4)Katja E. Luxem, Bas Vriens, Renata Behra, Lenny H. E. Winkel
Environmental Chemistry 14 (5)Henri Bertin, Estefania Del Campo Estrada, Olivier Atteia
Environmental Chemistry (Online Early)Ekaterina Markelova, Christopher T. Parsons, Raoul-Marie Couture, Christina M. Smeaton, Benoit Madé, Laurent Charlet, Philippe Van Cappellen
Activation of sodium percarbonate with ferrous ions for degradation of chlorobenzene in aqueous solution: mechanism, pathway and comparison with hydrogen peroxideEnvironmental Chemistry (Online Early)Sai Zhang, Xuebin Hu, Li Li, Xiaoliu Huangfu, Yingzhi Xu, Yuhang Qin
Analysis of trichloroethene vapour in soil-gas samples using solid-sorbent tubes with gas chromatography/mass spectrometryEnvironmental Chemistry (Online Early)Candice M. Duncan, Jon Mainhagu, Dan Lin, Mark L. Brusseau