Volatile organic compounds (VOCs) in Dushanzi, Xinjiang: Compositions and contributions to the formation of O3 and SOA
ZHANG Yuan-yu1, WANG Xin-ming2, LIU Xiao-ling1, ZHANG Yan-li2, DILINUER·Talip1, ZHANG Xiao-xiao1, ABULIKEMU·Abulizi1, LIU Wei3
1. Key Laboratory of Coal Clean Conversion and Chemical Engineering Process, Xinjiang Uyghur Autonomous Region, Xinjiang University, Urumqi 830046, China;
2. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry Chinese Academy of Sciences, Guangzhou 510640, China;
3. Dushanzi Environmental Research and Monitoring Station, Karamay 833699, China
Air samples were collected in the Dushanzi district of Xinjiang Uyghur Autonomous Region, China during the non-heating, heating and sandstorm periods for the analysis of volatile organic compounds (VOCs) by a preconcentrator coupled to a gas chromatography/mass spectrometer according tothe USEPATO-14 standard method. The results showed that group compositions of VOCs in Dushanzi district during the sampling period were ranked in the order ofalkanes (61.80%), alkenes (18.62%), aromatics (10.16%) and acetylene (9.42%). The secondary organic aerosol (SOA) formation potentials of VOCs as estimated by fractional aerosol coefficient (FAC) method revealed that aromatics contributed the most to SOA formation during non-heating, heating and sandstorm period, with contribution percentages of 97.8%, 87.28% and 69.52%, respectively. SPSS software and generalized additive model (GAM) were used to analyze the relationships among meteorological factors, VOCs, O3 and NOx. The results demonstrated that high temperature and dry weather were conducive to the formation of O3. The O3 formation in Dushanzi district seemed to be VOCs-limited, and alkenes such as 1-butene showed significant linear correlation with O3.
张渊钰, 王新明, 刘晓玲, 张艳利, 迪丽努尔·塔力甫, 张潇潇, 阿布力克木·阿不力孜, 刘伟. 新疆独山子区VOCs组成及其对O3和SOA的贡献[J]. 中国环境科学, 2020, 40(5): 1915-1923.
ZHANG Yuan-yu, WANG Xin-ming, LIU Xiao-ling, ZHANG Yan-li, DILINUER·Talip, ZHANG Xiao-xiao, ABULIKEMU·Abulizi, LIU Wei. Volatile organic compounds (VOCs) in Dushanzi, Xinjiang: Compositions and contributions to the formation of O3 and SOA. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 1915-1923.
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