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RESEARCH ARTICLE

Molecular composition of urban organic aerosols on clear and hazy days in Beijing: a comparative study using FT-ICR MS

Bin Jiang A , Bin Yu Kuang B , Yongmei Liang A C , Jingyi Zhang A , X. H. Hilda Huang B , Chunming Xu A , Jian Zhen Yu B C and Quan Shi A C
+ Author Affiliations
- Author Affiliations

A State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Changping District, Beijing 102249, China.

B Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.

C Corresponding authors. Email: ymliang@cup.edu.cn; chjianyu@ust.hk; sq@cup.edu.cn

Environmental Chemistry 13(5) 888-901 https://doi.org/10.1071/EN15230
Submitted: 4 November 2015  Accepted: 30 May 2016   Published: 27 July 2016

Environmental context. China has been experiencing severe particulate pollution and frequent haze episodes in recent years. We compare the molecular composition of urban organic aerosols on clear and hazy days in Beijing by high-resolution mass spectrometry. The comparative study shows that oxidation, sulfation and nitrification processes actively involve precursors of anthropogenic origin in the Beijing polluted urban atmosphere.

Abstract. Haze has frequently affected many cities and threatened human health in China. Detailed knowledge of the chemical composition of secondary organic aerosol provides fundamental information in the study of the formation mechanism of haze and its adverse effects on human health. In our work, dichloromethane and water extracts of ambient aerosols collected on hazy and clear days in Beijing were characterised by negative-ion electrospray ionisation and Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Formulae in four elemental compositional groups, namely CHOS, CHONS, CHO and CHON, were identified relying on the ultrahigh resolution and mass accuracy of FT-ICR MS. Significantly more compounds were detected and the peaks were much more intense in the hazy day samples, especially for the CHOS, CHONS and CHON formula groups. Organosulfates (OS) and nitrooxy-organosulfates (nitrooxy OS) were the major forms of CHOS and CHONS formulae respectively, and their numbers more than tripled on the hazy days. Under the severely polluted conditions in Beijing, the compositional distribution of the OS and nitrooxy OS exhibited distinct features such as intense peaks of low double-bond equivalent (DBE) (DBE = 0, 1 for OS and DBE = 1, 2 for nitrooxy OS) and low degree oxidation, of medium DBE (DBE = 2, 3 for OS and DBE = 3, 4 for nitrooxy OS), and of high DBE (DBE ≥ 4 for OS and DBE ≥ 5 for nitrooxy OS). The likely respective candidates for these could be aliphatic OS having a low degree of oxidation, biogenic OS and many aromatics and polycyclic aromatic hydrocarbon (PAH)-derived OS. The CHON formulae observed on hazy days were double those on clear days and had higher DBE values and larger O/N ratios. Slightly more CHO compounds were detected in the hazy-day samples and they had higher DBE values and more oxygen atoms. The comparative study suggests that oxidation, sulfation and nitrification processes actively involve precursors of anthropogenic origin in the Beijing polluted urban atmosphere.

Additional keywords: haze, nitrification, organosulfates, secondary organic aerosol, sulfation.


References

[1]  Y. L. Sun, G. S. Zhuang, A. H. Tang, Y. Wang, Z. S. An, Chemical characteristics of PM2.5 and PM10 in haze-fog episodes in Beijing. Environ. Sci. Technol. 2006, 40, 3148.
Chemical characteristics of PM2.5 and PM10 in haze-fog episodes in Beijing.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XjtlSisbs%3D&md5=ace2f61bdcbe57b9d069614a9cbd68aeCAS |

[2]  J. H. Tan, J. C. Duan, K. B. He, Y. L. Ma, F. K. Duan, Y. Chen, J. M. Fu, Chemical characteristics of PM2.5 during a typical haze episode in Guangzhou. J. Environ. Sci. 2009, 21, 774.
Chemical characteristics of PM2.5 during a typical haze episode in Guangzhou.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXosVenu70%3D&md5=fe2aeff95be4cb6da2a0fc4b036fce1aCAS |

[3]  L. X. Yang, D. C. Wang, S. H. Cheng, Z. Wang, Y. Zhou, X. H. Zhou, W. X. Wang, Influence of meteorological conditions and particulate matter on visual range impairment in Jinan, China. Sci. Total Environ. 2007, 383, 164.
Influence of meteorological conditions and particulate matter on visual range impairment in Jinan, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXnslGisrc%3D&md5=44ebb17a588115a87af110886b2634c1CAS | 17570464PubMed |

[4]  A. K. Yadav, K. Kumar, M. P. Ambha Kasim, Singh, S. K. Parida, M. Sharan, Visibility and incidence of respiratory diseases during the 1998 haze episode in Brunei Darussalam. Pure Appl. Geophys. 2003, 160, 265.
Visibility and incidence of respiratory diseases during the 1998 haze episode in Brunei Darussalam.Crossref | GoogleScholarGoogle Scholar |

[5]  W. L. Chameides, H. Yu, S. C. Liu, M. Bergin, X. Zhou, L. Mearns, G. Wang, C. S. Kiang, R. D. Saylor, C. Luo, Y. Huang, A. Steiner, F. Giorgi, Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls? Proc. Natl. Acad. Sci. USA 1999, 96, 13626.
Case study of the effects of atmospheric aerosols and regional haze on agriculture: an opportunity to enhance crop yields in China through emission controls?Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK1MXns1OqsLo%3D&md5=f7bb6675c099845242491192c057612aCAS | 10570123PubMed |

[6]  K. Okada, M. Ikegami, Y. Zaizen, Y. Makino, J. B. Jensen, J. L. Gras, The mixture state of individual aerosol particles in the 1997 Indonesian haze episode. J. Aerosol Sci. 2001, 32, 1269.
The mixture state of individual aerosol particles in the 1997 Indonesian haze episode.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXmtFWqu7k%3D&md5=1f697ef988b5ecd435fb86b3d038619dCAS |

[7]  B. A. Schichtel, R. B. Husar, S. R. Falke, W. E. Wilson, Haze trends over the United States, 1980–1995. Atmos. Environ. 2001, 35, 5205.
Haze trends over the United States, 1980–1995.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXmvVGgtb8%3D&md5=049e6dfa0bfe985121114a8dc4e1c009CAS |

[8]  L. Y. Lai, R. Sequeira, Visibility degradation across Hong Kong: its components and their relative contributions. Atmos. Environ. 2001, 35, 5861.
Visibility degradation across Hong Kong: its components and their relative contributions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXosFCqsLg%3D&md5=3a90ef94aa369af82a1ccd043662268aCAS |

[9]  J. G. Watson, Visibility: science and regulation. J. Air. Waste Manag. 2002, 52, 628.
Visibility: science and regulation.Crossref | GoogleScholarGoogle Scholar |

[10]  J. H. Tan, J. C. Duan, D. H. Chen, X. H. Wang, S. J. Guo, X. H. Bi, G. Y. Sheng, K. B. He, J. M. Fu, Chemical characteristics of haze during summer and winter in Guangzhou. Atmos. Res. 2009, 94, 238.
Chemical characteristics of haze during summer and winter in Guangzhou.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXhtVOntbjJ&md5=11ebac4f6c8c101c13cfa1f90824c3b0CAS |

[11]  S. H. Cheng, L. X. Yang, X. H. Zhou, L. K. Xue, X. M. Gao, Y. Zhou, W. X. Wang, Size-fractionated water-soluble ions, situ pH and water content in aerosol on hazy days and the influences on visibility impairment in Jinan, China. Atmos. Environ. 2011, 45, 4631.
Size-fractionated water-soluble ions, situ pH and water content in aerosol on hazy days and the influences on visibility impairment in Jinan, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXpt1ahtrc%3D&md5=c565ec18e1eea0b34ce57f2b0dc0325eCAS |

[12]  J. H. Tan, S. J. Guo, Y. L. Ma, J. C. Duan, Y. Cheng, K. B. He, F. M. Yang, Characteristics of particulate PAHs during a typical haze episode in Guangzhou, China. Atmos. Res. 2011, 102, 91.
Characteristics of particulate PAHs during a typical haze episode in Guangzhou, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXht1Srs7vM&md5=e1d84ec8f343bd4f7e06b95aa24e421fCAS |

[13]  H. S. Kim, H. Jong-Bae, K. H. Philip, T. M. Holsen, S. M. Yi, Characteristics of the major chemical constituents of PM2.5 and smog events in Seoul, Korea, in 2003 and 2004. Atmos. Environ. 2007, 41, 6762.
Characteristics of the major chemical constituents of PM2.5 and smog events in Seoul, Korea, in 2003 and 2004.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXhtVKrurbK&md5=014162a0fc4315b7cd4f33affd5aa6c0CAS |

[14]  M. R. Bin Abas, N. A. Rahman, M. J. Nymj Omar, M. J. Maah, A. AbuSamah, D. R. Oros, A. Otto, B. R. T. Simoneit, Organic composition of aerosol particulate matter during a haze episode in Kuala Lumpur, Malaysia. Atmos. Environ. 2004, 38, 4223.
Organic composition of aerosol particulate matter during a haze episode in Kuala Lumpur, Malaysia.Crossref | GoogleScholarGoogle Scholar |

[15]  H. X. Lü, Q. Y. Cai, S. Wen, Y. G. Chi, S. J. Guo, G. Y. Sheng, J. M. Fu, B. Antizar-Ladislao, Carbonyl compounds in the ambient air of hazy days and clear days in Guangzhou, China. Atmos. Res. 2009, 94, 363.
Carbonyl compounds in the ambient air of hazy days and clear days in Guangzhou, China.Crossref | GoogleScholarGoogle Scholar |

[16]  Q. Z. Meng, S. X. Fan, J. B. He, J. Zhang, Y. Sun, Y. Zhang, F. Zu, Particle size distribution and characteristics of polycyclic aromatic hydrocarbons during a heavy haze episode in Nanjing, China. Particuology 2015, 18, 127.
Particle size distribution and characteristics of polycyclic aromatic hydrocarbons during a heavy haze episode in Nanjing, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXhtVGgs77L&md5=e971cf7253fde33c403a06570e691060CAS |

[17]  S. Guo, M. Hu, M. L. Zamora, J. F. Peng, D. J. Shang, J. Zheng, Z. F. Du, Z. Wu, M. Shao, L. M. Zeng, M. J. Molina, R. Y. Zhang, Elucidating severe urban haze formation in China. Proc. Natl. Acad. Sci. USA 2014, 111, 17373.
Elucidating severe urban haze formation in China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXhvFKmu77J&md5=05b68367d68dadc3009120714b06afc4CAS | 25422462PubMed |

[18]  Y. Wang, G. S. Zhuang, Y. L. Sun, Z. S. An, The variation of characteristics and formation mechanisms of aerosols in dust, haze, and clear days in Beijing. Atmos. Environ. 2006, 40, 6579.
The variation of characteristics and formation mechanisms of aerosols in dust, haze, and clear days in Beijing.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28XpsF2jur0%3D&md5=8f8ffd59cb159f973075c56e5f22fe1aCAS |

[19]  Q. Y. Fu, G. S. Zhuang, J. Wang, C. Xu, K. Huang, J. Li, B. Hou, T. Lu, D. G. Streets, Mechanism of formation of the heaviest pollution episode ever recorded in the Yangtze River Delta, China. Atmos. Environ. 2008, 42, 2023.
Mechanism of formation of the heaviest pollution episode ever recorded in the Yangtze River Delta, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXitlWisLo%3D&md5=b75d824223726f479f3ca416855a352bCAS |

[20]  Y. Kim, K. Sartelet, C. Seigneur, Formation of secondary aerosols over Europe: comparison of two gas-phase chemical mechanisms. Atmos. Chem. Phys. 2011, 11, 583.
Formation of secondary aerosols over Europe: comparison of two gas-phase chemical mechanisms.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXkvFClsbg%3D&md5=2c98e1a6aff47bb33e3cda1ca0d785aaCAS |

[21]  Y. S. Wang, L. Yao, L. L. Wang, Z. R. Liu, D. S. Ji, G. Q. Tang, J. K. Zhang, Y. Sun, B. Hu, J. Y. Xin, Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China. Sci. China Earth Sci. 2014, 57, 14.
Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXhvVGru7bE&md5=d8dfe1a83fe81c65718f4035b35d384dCAS |

[22]  R. P. Rodgers, A. G. Marshall, Petroleomics: advanced characterization of petroleum-derived materials by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), in Asphaltenes, Heavy Oils, and Petroleomics 2007, pp. 63–93 (Springer: New York, NY).

[23]  A. G. Marshall, R. P. Rodgers, Petroleomics: chemistry of the underworld. Proc. Natl. Acad. Sci. USA 2008, 105, 18090.
Petroleomics: chemistry of the underworld.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhsVOmsLfF&md5=cd2f84499a3382040c2e6cdd6bccc1eaCAS | 18836082PubMed |

[24]  Q. Shi, N. Pan, H. Y. Long, D. C. Cui, X. F. Guo, Y. H. Long, K. H. Chung, S. Q. Zhao, C. M. Xu, C. S. Hsu, Characterization of middle-temperature gasification coal tar. Part 3: molecular composition of acidic compounds. Energy Fuels 2013, 27, 108.
Characterization of middle-temperature gasification coal tar. Part 3: molecular composition of acidic compounds.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XhslygtrnM&md5=9bebe405927416f0b92c8ef18e1bf3dfCAS |

[25]  Y. Liu, Q. Shi, Y. H. Zhang, Y. L. He, K. H. Chung, S. Q. Zhao, C. M. Xu, Characterization of red pine pyrolysis bio-oil by gas chromatography–mass spectrometry and negative-ion electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry. Energy Fuels 2012, 26, 4532.
Characterization of red pine pyrolysis bio-oil by gas chromatography–mass spectrometry and negative-ion electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38Xotlelsrs%3D&md5=451b70d00286d7e787a84853ad4c9651CAS |

[26]  A. S. Wozniak, J. E. Bauer, R. L. Sleighter, R. M. Dickhut, P. G. Hatcher, Technical Note: Molecular characterization of aerosol-derived water-soluble organic carbon using ultrahigh-resolution electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry. Atmos. Chem. Phys. 2008, 8, 5099.
Technical Note: Molecular characterization of aerosol-derived water-soluble organic carbon using ultrahigh-resolution electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhtlCntbbF&md5=18a232d8ec0b3de132d0fd89c6927076CAS |

[27]  P. Lin, J. Z. Yu, G. Engling, M. Kalberer, Organosulfates in humic-like substance fraction isolated from aerosols at seven locations in east Asia: a study by ultrahigh-resolution mass spectrometry. Environ. Sci. Technol. 2012, 46, 13118.
Organosulfates in humic-like substance fraction isolated from aerosols at seven locations in east Asia: a study by ultrahigh-resolution mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38Xhs1Ons7fJ&md5=4249dd3774896f3f1610cfd88dfe5e9fCAS | 23153227PubMed |

[28]  P. Lin, A. G. Rincon, M. Kalberer, J. Z. Yu, Elemental composition of HULIS in the Pearl River Delta Region, China: results inferred from positive and negative electrospray high-resolution mass spectrometric data. Environ. Sci. Technol. 2012, 46, 7454.
Elemental composition of HULIS in the Pearl River Delta Region, China: results inferred from positive and negative electrospray high-resolution mass spectrometric data.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XoslSgtLs%3D&md5=1055310a7b7f5cb2e337cc35fb75b220CAS | 22702400PubMed |

[29]  P. Schmitt-Kopplin, A. Gelencser, E. Dabek-Zlotorzynska, G. Kiss, N. Hertkorn, M. Harir, Y. Hong, I. Gebefugi, Analysis of the unresolved organic fraction in atmospheric aerosols with ultrahigh-resolution mass spectrometry and nuclear magnetic resonance spectroscopy: organosulfates as photochemical smog constituents. Anal. Chem. 2010, 82, 8017.
Analysis of the unresolved organic fraction in atmospheric aerosols with ultrahigh-resolution mass spectrometry and nuclear magnetic resonance spectroscopy: organosulfates as photochemical smog constituents.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXht1WmtrrF&md5=c8c5c5e9f7a53eef4b8bf9f1482fa3f2CAS | 20879800PubMed |

[30]  L. Müller, M. C. Reinnig, H. Hayen, T. Hoffmann, Characterization of oligomeric compounds in secondary organic aerosol using liquid chromatography coupled to electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry. Rapid Commun. Mass Spectrom. 2009, 23, 971.
Characterization of oligomeric compounds in secondary organic aerosol using liquid chromatography coupled to electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 19242953PubMed |

[31]  T. Reemtsma, A. These, P. Venkatachari, X. Y. Xia, P. K. Hopke, A. Springer, M. Linscheid, Identification of fulvic acids and sulfated and nitrated analogues in atmospheric aerosol by electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry. Anal. Chem. 2006, 78, 8299.
Identification of fulvic acids and sulfated and nitrated analogues in atmospheric aerosol by electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28Xht1Sjtb7I&md5=720abf1ef5984b152b4834ed88f6d195CAS | 17165819PubMed |

[32]  L. R. Mazzoleni, P. Saranjampour, M. M. Dalbec, V. Samburova, A. G. Hallar, B. Zielinska, D. H. Lowenthal, S. Kohl, Identification of water-soluble organic carbon in non-urban aerosols using ultrahigh-resolution FT-ICR mass spectrometry: organic anions. Environ. Chem. 2012, 9, 285.
Identification of water-soluble organic carbon in non-urban aerosols using ultrahigh-resolution FT-ICR mass spectrometry: organic anions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XpsVOisro%3D&md5=36dae3af4403d24dcc88d2e7738682e1CAS |

[33]  M. M. Yassine, E. Dabek-Zlotorzynska, M. Harir, P. Schmitt-Kopplin, Identification of weak and strong organic acids in atmospheric aerosols by capillary electrophoresis/mass spectrometry and ultrahigh-resolution Fourier-transform ion cyclotron resonance mass spectrometry. Anal. Chem. 2012, 84, 6586.
Identification of weak and strong organic acids in atmospheric aerosols by capillary electrophoresis/mass spectrometry and ultrahigh-resolution Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38Xps1GjsrY%3D&md5=ae1d872116b3cbb6af8205e58c30b44cCAS | 22770380PubMed |

[34]  I. Kourtchev, S. Fuller, J. Aalto, T. M. Ruuskanen, M. W. McLeod, W. Maenhaut, R. Jones, M. Kulmala, M. Kalberer, Molecular composition of boreal forest aerosol from Hyytiala, Finland, using ultrahigh-resolution mass spectrometry. Environ. Sci. Technol. 2013, 47, 4069.
Molecular composition of boreal forest aerosol from Hyytiala, Finland, using ultrahigh-resolution mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXjsFGjt74%3D&md5=ffc7b599d4f051ef8161b611bf30d37aCAS | 23469832PubMed |

[35]  K. E. Altieri, B. J. Turpin, S. P. Seitzinger, Composition of dissolved organic nitrogen in continental precipitation investigated by ultrahigh-resolution FT-ICR mass spectrometry. Environ. Sci. Technol. 2009, 43, 6950.
Composition of dissolved organic nitrogen in continental precipitation investigated by ultrahigh-resolution FT-ICR mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXpvFyisr0%3D&md5=4faba0825b20c5980e03d91797331612CAS | 19806726PubMed |

[36]  I. Kourtchev, I. P. O’Connor, C. Giorio, S. J. Fuller, K. Kristensen, W. Maenhaut, J. C. Wenger, J. R. Sodeau, M. Glasius, M. Kalberer, Effects of anthropogenic emissions on the molecular composition of urban organic aerosols: an ultrahigh-resolution mass spectrometry study. Atmos. Environ. 2014, 89, 525.
Effects of anthropogenic emissions on the molecular composition of urban organic aerosols: an ultrahigh-resolution mass spectrometry study.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXlvVSmt7w%3D&md5=d1913b9c790a7e5b216eadcbfc998f1aCAS |

[37]  K. E. Altieri, S. P. Seitzinger, A. G. Carlton, B. J. Turpin, G. C. Klein, A. G. Marshall, Oligomers formed through in-cloud methylglyoxal reactions: chemical composition, properties, and mechanisms investigated by ultrahigh-resolution FT-ICR mass spectrometry. Atmos. Environ. 2008, 42, 1476.
Oligomers formed through in-cloud methylglyoxal reactions: chemical composition, properties, and mechanisms investigated by ultrahigh-resolution FT-ICR mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhvFymurs%3D&md5=0b39d2dbcd5d6aede0c6dd43d6d16ad0CAS |

[38]  S. Tao, X. Lu, N. Levac, A. P. Bateman, T. B. Nguyen, D. L. Bones, S. A. Nizkorodov, J. Laskin, A. Laskin, X. Yang, Molecular characterization of organosulfates in organic aerosols from Shanghai and Los Angeles urban areas by nanospray-desorption electrospray ionization high-resolution mass spectrometry. Environ. Sci. Technol. 2014, 48, 10993.
Molecular characterization of organosulfates in organic aerosols from Shanghai and Los Angeles urban areas by nanospray-desorption electrospray ionization high-resolution mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXhsVSns7rP&md5=e548b6b3cb51b90d9c86934f229a69c6CAS | 25184338PubMed |

[39]  J. D. Surratt, Y. Gómez-González, A. W. H. Chan, R. Vermeylen, M. Shahgholi, T. E. Kleindienst, E. O. Edney, J. H. Offenberg, M. Lewandowski, M. Jaoui, Organosulfate formation in biogenic secondary organic aerosol. J. Phys. Chem. A 2008, 112, 8345.
Organosulfate formation in biogenic secondary organic aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXpvFOgsrw%3D&md5=79218b29bed9fdac099379ed78ac8a15CAS | 18710205PubMed |

[40]  M. P. Tolocka, B. Turpin, Contribution of organosulfur compounds to organic aerosol mass. Environ. Sci. Technol. 2012, 46, 7978.
Contribution of organosulfur compounds to organic aerosol mass.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XptVOktLg%3D&md5=37e540b80e51c732bd15a2da27168620CAS | 22731120PubMed |

[41]  H. Lukács, A. Gelencser, A. Hoffer, G. Kiss, K. Horvath, Z. Hartyani, Quantitative assessment of organosulfates in size-segregated rural fine aerosol. Atmos. Chem. Phys. 2009, 9, 231.
Quantitative assessment of organosulfates in size-segregated rural fine aerosol.Crossref | GoogleScholarGoogle Scholar |

[42]  M. Riva, S. H. Budisulistiorini, Z. Zhang, A. Gold, J. D. Surratt, Chemical characterization of secondary organic aerosol constituents from isoprene ozonolysis in the presence of acidic aerosol. Atmos. Environ. 2016, 130, 5.
Chemical characterization of secondary organic aerosol constituents from isoprene ozonolysis in the presence of acidic aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXhtFajsbzF&md5=7f24f1a15975a41d6ff7ebe21a7043aaCAS |

[43]  J. Liggio, S.-M. Li, Organosulfate formation during the uptake of pinonaldehyde on acidic sulfate aerosols. Geophys. Res. Lett. 2006, 33, L13808.
Organosulfate formation during the uptake of pinonaldehyde on acidic sulfate aerosols.Crossref | GoogleScholarGoogle Scholar |

[44]  J. D. Surratt, Y. Gomez-Gonzalez, A. W. H. Chan, R. Vermeylen, M. Shahgholi, T. E. Kleindienst, E. O. Edney, J. H. Offenberg, M. Lewandowski, M. Jaoui, W. Maenhaut, M. Claeys, R. C. Flagan, J. H. Seinfeld, Organosulfate formation in biogenic secondary organic aerosol. J. Phys. Chem. A 2008, 112, 8345.
Organosulfate formation in biogenic secondary organic aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXpvFOgsrw%3D&md5=79218b29bed9fdac099379ed78ac8a15CAS | 18710205PubMed |

[45]  M. N. Chan, J. D. Surratt, A. W. H. Chan, K. Schilling, J. H. Offenberg, M. Lewandowski, E. O. Edney, T. E. Kleindienst, M. Jaoui, E. S. Edgerton, R. L. Tanner, S. L. Shaw, M. Zheng, E. M. Knipping, J. H. Seinfeld, Influence of aerosol acidity on the chemical composition of secondary organic aerosol from beta-caryophyllene. Atmos. Chem. Phys. 2011, 11, 1735.
Influence of aerosol acidity on the chemical composition of secondary organic aerosol from beta-caryophyllene.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXlvFyltbw%3D&md5=79ce0cdcce2572adc4c09aca1b9c4b64CAS |

[46]  A. I. Darer, N. C. Cole-Filipiak, A. E. O’Connor, M. J. Elrod, Formation and stability of atmospherically relevant isoprene-derived organosulfates and organonitrates. Environ. Sci. Technol. 2011, 45, 1895.
Formation and stability of atmospherically relevant isoprene-derived organosulfates and organonitrates.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXhsFGnsL4%3D&md5=b7421bd947c92093553020695fc00f6bCAS | 21291229PubMed |

[47]  M. J. Perri, Y. B. Lim, S. P. Seitzinger, B. J. Turpin, Organosulfates from glycolaldehyde in aqueous aerosols and clouds: laboratory studies. Atmos. Environ. 2010, 44, 2658.
Organosulfates from glycolaldehyde in aqueous aerosols and clouds: laboratory studies.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXnt12ltLs%3D&md5=27ee1851fcd15c069c661474a8d4fac6CAS |

[48]  P. Lin, X. F. Huang, L. Y. He, J. Z. Yu, Abundance and size distribution of HULIS in ambient aerosols at a rural site in south China. J. Aerosol Sci. 2010, 41, 74.
Abundance and size distribution of HULIS in ambient aerosols at a rural site in south China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXnt1entg%3D%3D&md5=58b1f45b72219778af6ed70d3d104274CAS |

[49]  B. Jiang, Y. M. Liang, C. M. Xu, J. Y. Zhang, M. Hu, Q. Shi, Polycyclic aromatic hydrocarbons (PAHs) in ambient aerosols from Beijing: characterization of low volatile PAHs by positive-ion atmospheric pressure photoionization (APPI) coupled with Fourier-transform ion cyclotron resonance. Environ. Sci. Technol. 2014, 48, 4716.
Polycyclic aromatic hydrocarbons (PAHs) in ambient aerosols from Beijing: characterization of low volatile PAHs by positive-ion atmospheric pressure photoionization (APPI) coupled with Fourier-transform ion cyclotron resonance.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXls1Sksbg%3D&md5=34b9e5491ba18c6b19cd2a3a831c053aCAS | 24702199PubMed |

[50]  Q. Shi, D. J. Hou, K. H. Chung, C. M. Xu, S. Q. Zhao, Y. H. Zhang, Characterization of heteroatom compounds in a crude oil and its saturates, aromatics, resins, and asphaltenes (SARA) and non-basic nitrogen fractions analyzed by negative-ion electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry. Energy Fuels 2010, 24, 2545.
Characterization of heteroatom compounds in a crude oil and its saturates, aromatics, resins, and asphaltenes (SARA) and non-basic nitrogen fractions analyzed by negative-ion electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXjvVyrtLk%3D&md5=b37c6becef1a3aea5a972b52800e2364CAS |

[51]  X. H. H. Huang, Q. J. Bian, W. M. Ng, P. K. K. Louie, J. Z. Yu, Characterization of PM2.5 major components and source investigation in suburban Hong Kong: a one-year monitoring study. Aerosol Air Qual. Res. 2014, 14, 237.
| 1:CAS:528:DC%2BC2cXotVKrtL4%3D&md5=ea2e074f6280dc6b32bb1ff401767a4dCAS |

[52]  R. R. Draxler, G. D. Rolph, HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) Model 2011 (NOAA Air Resources Laboratory: College Park, MD). Available at http://ready.arl.noaa.gov/HYSPLIT.php [Verified 28 June 2016].

[53]  G. Liu, Z. Niu, D. Van Niekerk, T. Xue, L. Zheng, Polycyclic aromatic hydrocarbons (PAHs) from coal combustion: emissions, analysis, and toxicology, in Reviews of Environmental Contamination and Toxicology, Vol. 192 (Ed. DM Whitacre) 2008, pp. 1–28 (Springer: New York, NY).

[54]  B. Y. Kuang, P. Lin, X. H. H. Huang, J. Z. Yu, Sources of humic-like substances in the Pearl River Delta, China: positive matrix factorization analysis of PM2.5 major components and source markers. Atmos. Chem. Phys. 2015, 15, 1995.
Sources of humic-like substances in the Pearl River Delta, China: positive matrix factorization analysis of PM2.5 major components and source markers.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXkt1SgsLk%3D&md5=f444c19710cd1dd84d4e3f18df1b088dCAS |

[55]  J. Tollefson, China’s emissions overestimated. Nature 2015, 524, 276.
China’s emissions overestimated.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXhtlKlu7jM&md5=bd1261585bc879a84df14032d7456cccCAS | 26289187PubMed |

[56]  D. Fabbri, C. Torri, B. R. T. Simonei, L. Marynowski, A. I. Rushdi, M. J. Fabianska, Levoglucosan and other cellulose and lignin markers in emissions from burning of Miocene lignites. Atmos. Environ. 2009, 43, 2286.
Levoglucosan and other cellulose and lignin markers in emissions from burning of Miocene lignites.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXktVeisr0%3D&md5=f310fd0291107ee742e188d16c05fae4CAS |

[57]  Y. X. Zhang, J. J. Schauer, Y. H. Zhang, L. M. Zeng, Y. J. Wei, Y. Liu, M. Shao, Characteristics of particulate carbon emissions from real-world Chinese coal combustion. Environ. Sci. Technol. 2008, 42, 5068.
Characteristics of particulate carbon emissions from real-world Chinese coal combustion.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXmvVGqtb4%3D&md5=576bfda91fd57db37e738787149e1ee9CAS |

[58]  J. J. Schauer, W. F. Rogge, L. M. Hildemann, M. A. Mazurek, G. R. Cass, B. R. T. Simoneit, Source apportionment of airborne particulate matter using organic compounds as tracers. Atmos. Environ. 1996, 30, 3857.

[59]  J. Z. Yu, X. H. H. Huang, S. S. H. Ho, Q. J. Bian, Non-polar organic compounds in fine particles: quantification by thermal desorption-GC/MS and evidence for their significant oxidation in ambient aerosols in Hong Kong. Anal. Bioanal. Chem. 2011, 401, 3125.
Non-polar organic compounds in fine particles: quantification by thermal desorption-GC/MS and evidence for their significant oxidation in ambient aerosols in Hong Kong.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXht1ygs7fF&md5=ba537918f14d860f73e385d6cc506bb6CAS | 21983947PubMed |

[60]  N. Yassaa, B. Y. Meklati, A. Cecinato, F. Marino, Particulate n-alkanes, n-alkanoic acids and polycyclic aromatic hydrocarbons in the atmosphere of Algiers City area. Atmos. Environ. 2001, 35, 1843.
Particulate n-alkanes, n-alkanoic acids and polycyclic aromatic hydrocarbons in the atmosphere of Algiers City area.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXht1yqu7s%3D&md5=653687a92ea2e0ddf0263ac0b6d05a75CAS |

[61]  H. J. Tobias, D. E. Beving, P. J. Ziemann, H. Sakurai, M. Zuk, P. H. McMurry, D. Zarling, R. Waytulonis, D. B. Kittelson, Chemical analysis of diesel engine nanoparticles using a nano-DMA/thermal desorption particle beam mass spectrometer. Environ. Sci. Technol. 2001, 35, 2233.
Chemical analysis of diesel engine nanoparticles using a nano-DMA/thermal desorption particle beam mass spectrometer.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXivFSgsbk%3D&md5=67fba35e146450daf8d28ddd3b929c37CAS | 11414024PubMed |

[62]  H. Sakurai, H. J. Tobias, K. Park, D. Zarling, K. S. Docherty, D. B. Kittelson, P. H. McMurry, P. J. Ziemann, On-line measurements of diesel nanoparticle composition and volatility. Atmos. Environ. 2003, 37, 1199.
On-line measurements of diesel nanoparticle composition and volatility.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXhslGqsbg%3D&md5=d957b8c596decf38f101629f6bc2c7b3CAS |

[63]  Q. Shi, C. Xu, K. H. Chung, Y. Zhang, W. Gao, Characterization of basic nitrogen species in coker gas oils by positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. Energy Fuels 2010, 24, 563.
Characterization of basic nitrogen species in coker gas oils by positive-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXhtlChurrE&md5=17890d5333b9555842a2260bd1942552CAS |

[64]  L. Xu, H. Y. Guo, C. M. Boyd, M. Klein, A. Bougiatioti, K. M. Cerully, J. R. Hite, G. Isaacman-VanWertz, N. M. Kreisberg, C. Knote, K. Olson, A. Koss, A. H. Goldstein, S. V. Hering, J. de Gouw, K. Baumann, S. H. Lee, A. Nenes, R. J. Weber, N. L. Ng, Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the south-eastern United States. Proc. Natl. Acad. Sci. USA 2015, 112, 37.
Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the south-eastern United States.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXitFCrtrfK&md5=ed0331d81f4d5d76453f768a12e2cd7aCAS | 25535345PubMed |

[65]  Y. Iinuma, C. Muller, T. Berndt, O. Boge, M. Claeys, H. Herrmann, Evidence for the existence of organosulfates from beta-pinene ozonolysis in ambient secondary organic aerosol. Environ. Sci. Technol. 2007, 41, 6678.
Evidence for the existence of organosulfates from beta-pinene ozonolysis in ambient secondary organic aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXpvVCntLo%3D&md5=a10154227e6b8337afad71679a1981b5CAS | 17969680PubMed |

[66]  J. D. Surratt, J. H. Kroll, T. E. Kleindienst, E. O. Edney, M. Claeys, A. Sorooshian, N. L. Ng, J. H. Offenberg, M. Lewandowski, M. Jaoui, R. C. Flagan, J. H. Seinfeld, Evidence for organosulfates in secondary organic aerosol. Environ. Sci. Technol. 2007, 41, 517.
Evidence for organosulfates in secondary organic aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD28Xht1OmsLzM&md5=a1bc7c44d64a3fa51741ebc0724303b5CAS | 17310716PubMed |

[67]  X. K. Wang, S. Rossignol, Y. Ma, L. Yao, M. Y. Wang, J. M. Chen, C. George, L. Wang, Molecular characterization of atmospheric particulate organosulfates in three megacities at the middle and lower reaches of the Yangtze River. Atmos. Chem. Phys. 2016, 16, 2285.
Molecular characterization of atmospheric particulate organosulfates in three megacities at the middle and lower reaches of the Yangtze River.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC28XpsVSnu7Y%3D&md5=a8c4a5d83dc4ceff216e12d306f0ea6cCAS |

[68]  B. Y. Kuang, P. Lin, M. Hu, J. Z. Yu, Aerosol size distribution characteristics of organosulfates in the Pearl River Delta region, China. Atmos. Environ. 2016, 130, 23.
Aerosol size distribution characteristics of organosulfates in the Pearl River Delta region, China.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXhsFaqur3K&md5=8a5861ec7103c8f3fe2dd63a62e76751CAS |

[69]  E. A. Stone, L. M. Yang, L. Y. E. Yu, M. Rupakheti, Characterization of organosulfates in atmospheric aerosols at Four Asian locations. Atmos. Environ. 2012, 47, 323.
Characterization of organosulfates in atmospheric aerosols at Four Asian locations.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXhs1KrtbrL&md5=c681b68068d3ffdaec3dad0a662ec15dCAS |

[70]  S. Kundu, T. A. Quraishi, G. Yu, C. Suarez, F. N. Keutsch, E. A. Stone, Evidence and quantitation of aromatic organosulfates in ambient aerosols in Lahore, Pakistan. Atmos. Chem. Phys. 2013, 13, 4865.
Evidence and quantitation of aromatic organosulfates in ambient aerosols in Lahore, Pakistan.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3sXhsleht7bP&md5=31c71e2f2de2348a9423e621d9f82179CAS |

[71]  M. Riva, S. Tomaz, T. Q. Cui, Y. H. Lin, E. Perraudin, A. Gold, E. A. Stone, E. Villenave, J. D. Surratt, Evidence for an unrecognized secondary anthropogenic source of organosulfates and sulfonates: gas-phase oxidation of polycyclic aromatic hydrocarbons in the presence of sulfate aerosol. Environ. Sci. Technol. 2015, 49, 6654.
Evidence for an unrecognized secondary anthropogenic source of organosulfates and sulfonates: gas-phase oxidation of polycyclic aromatic hydrocarbons in the presence of sulfate aerosol.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXms1Slt7c%3D&md5=77f138225580c4317b9172ebe344408bCAS | 25879928PubMed |

[72]  C. A. Hughey, C. L. Hendrickson, R. P. Rodgers, A. G. Marshall, K. N. Qian, Kendrick mass defect spectrum: a compact visual analysis for ultrahigh-resolution broadband mass spectra. Anal. Chem. 2001, 73, 4676.
Kendrick mass defect spectrum: a compact visual analysis for ultrahigh-resolution broadband mass spectra.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXmtlWisbo%3D&md5=dbba4e4ac2106613b2a761abf3770ff2CAS | 11605846PubMed |

[73]  L. R. Mazzoleni, B. M. Ehrmann, X. H. Shen, A. G. Marshall, J. L. Collett, Water-soluble atmospheric organic matter in fog: exact masses and chemical formula identification by ultrahigh-resolution Fourier-transform ion cyclotron resonance mass spectrometry. Environ. Sci. Technol. 2010, 44, 3690.
Water-soluble atmospheric organic matter in fog: exact masses and chemical formula identification by ultrahigh-resolution Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXkvVaiu7o%3D&md5=4ff38aaf043294718c1df6a1673e79f1CAS | 20397689PubMed |

[74]  N. B. Cech, C. G. Enke, Practical implications of some recent studies in electrospray ionization fundamentals. Mass Spectrom. Rev. 2001, 20, 362.
Practical implications of some recent studies in electrospray ionization fundamentals.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD38Xks1Olsrk%3D&md5=9477aef87a9dec42362c830ccfd42698CAS | 11997944PubMed |

[75]  Y. Li, Z. Fang, C. He, Y. Zhang, C. Xu, K. H. Chung, Q. Shi, Molecular characterization and transformation of dissolved organic matter in refinery wastewater from water treatment processes: characterization by Fourier transform ion cyclotron resonance mass spectrometry. Energy Fuels 2015, 29, 6956.
Molecular characterization and transformation of dissolved organic matter in refinery wastewater from water treatment processes: characterization by Fourier transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2MXhs1ejsbrO&md5=57f2f4e3567b70f3a1a6bdf34dbcaf7eCAS |

[76]  X. B. Zhou, Q. Shi, Y. H. Zhang, S. Q. Zhao, R. Zhang, K. H. Chung, C. M. Xu, Analysis of saturated hydrocarbons by redox reaction with negative-ion electrospray Fourier-transform ion cyclotron resonance mass spectrometry. Anal. Chem. 2012, 84, 3192.
Analysis of saturated hydrocarbons by redox reaction with negative-ion electrospray Fourier-transform ion cyclotron resonance mass spectrometry.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XitlWntbg%3D&md5=301e8cf88fd2244496fb5249d65d6496CAS |

[77]  S. Kim, R. W. Kramer, P. G. Hatcher, Graphical method for analysis of ultrahigh-resolution broadband mass spectra of natural organic matter, the van Krevelen diagram. Anal. Chem. 2003, 75, 5336.
Graphical method for analysis of ultrahigh-resolution broadband mass spectra of natural organic matter, the van Krevelen diagram.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXnt1OhsrY%3D&md5=62a01dfac9d49e90f63f1a3275122e16CAS | 14710810PubMed |

[78]  Z. G. Wu, R. P. Rodgers, A. G. Marshall, Two- and three-dimensional van Krevelen diagrams: a graphical analysis complementary to the Kendrick mass plot for sorting elemental compositions of complex organic mixtures based on ultrahigh-resolution broadband Fourier-transform ion cyclotron resonance mass measurements. Anal. Chem. 2004, 76, 2511.
Two- and three-dimensional van Krevelen diagrams: a graphical analysis complementary to the Kendrick mass plot for sorting elemental compositions of complex organic mixtures based on ultrahigh-resolution broadband Fourier-transform ion cyclotron resonance mass measurements.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXisVyisr0%3D&md5=3e05933233c384acfd1567ca5ffdff3dCAS |