Diurnal evolutions and sources of water-soluble chromophoric aerosols over Xi'an during haze event, in Northwest China.

The Science of the Total Environment
Qingcai ChenYuqin Wang

Abstract

Atmospheric brown carbon and their chemical behavior potentially impacts the climate and air quality. Due to lack of researches on the atmospheric chromophores by using online experimental instrument, so using the offline EEM approaches to study their types, sources and chemical processes. In this study, PILS-EEM-TOC system (Particle into liquid sampler coupled with excitation-emission matrix and total organic carbon) was developed in order to distinguish the hourly evolutions and sources of water-soluble chromophoric organic matters in atmospheric fine particles. The results suggested that the sources of atmospheric chromophores in winter were primary combustion (~90%) and coal burning, followed by biomass burning and cooking emissions in Xi'an (Northwest China). These atmospheric chromophores decay under the combined action of solar radiation and atmospheric oxidants. Meanwhile, the secondary chromophores were mainly highly-oxygenated humic-like substance (HULIS), produced by atmospheric oxidation reactions with the highest peak in the afternoon. The partly secondary chromophores can also be generated through the Maillard-like reaction in the morning, which depends on the relative humidity of the atmosphere. These findings ma...Continue Reading

References

Aug 10, 2004·Environmental Science & Technology·Rossana Del Vecchio, Neil V Blough
Jan 30, 2007·Chemical Reviews·Paula G Coble
Aug 9, 2008·Science·Duncan T L AlexanderJames R Anderson
Sep 1, 2009·The Journal of Physical Chemistry. a·Angela G RincónA J Colussi
Sep 29, 2011·Environmental Science & Technology·Xin HuangLei Zhu
May 15, 2013·Environmental Science & Technology·Hyun Ji Julie LeeSergey A Nizkorodov
Dec 20, 2013·Environmental Science & Technology·Michelle H PowelsonDavid O De Haan
Aug 8, 2014·Environmental Science & Technology·Hyun Ji Julie LeeSergey A Nizkorodov
Feb 27, 2015·Chemical Reviews·Alexander LaskinSergey A Nizkorodov
May 27, 2016·Environmental Science & Technology·Lelia N HawkinsDavid O De Haan
Nov 2, 2016·Environmental Science & Technology·Peng LinAlexander Laskin
Dec 30, 2016·Environmental Science & Technology·Fernando L Rosario-Ortiz, Julie A Korak
May 19, 2017·Environmental Science & Technology·Rangu SatishNeeraj Rastogi
Jun 24, 2017·Environmental Science & Technology·Jenny P S WongRodney J Weber
Aug 2, 2017·Environmental Science & Technology·Peng LinAlexander Laskin
May 26, 2018·Environmental Science & Technology·Ru-Jin HuangUli Dusek
Apr 17, 2019·Proceedings of the National Academy of Sciences of the United States of America·Zhisheng AnYuemeng Ji
Apr 16, 2020·The Science of the Total Environment·Jinwen LiYuqin Wang
Jan 28, 2021·Environmental Science & Technology·Anusha Priyadarshani Silva HettiyaduraAlexander Laskin

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