Source Analysis and Health Risk Assessment of Toxic Volatile Organic Compounds in Nanjing in Summer and Winter

被引：0
|
作者：
Zhang Z.-J. [1 ,2 ]
Lin Y.-C. [1 ,2 ]
Zhang Y.-X. [1 ,2 ]
Cao M.-Y. [1 ,2 ]
Zhang Y.-L. [1 ,2 ]
机构：
[1] Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change (ILCEC), School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing
[2] Key Laboratory of Meteorological Disaster, Minister of Education, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing
来源：
Lin, Yu-Chi (yuchilin@nuist.edu.cn); Lin, Yu-Chi (yuchilin@nuist.edu.cn) | 1600年 / Science Press卷 / 42期
关键词：
Carcinogenic and non-carcinogenic risk; Health risks; Source analysis; Source apportionment; Volatile organic compounds(VOCs);
D O I：
10.13227/j.hjkx.202103037
中图分类号：
学科分类号：
摘要：
The atmospheric VOC concentrations were measured in Nanjing using an online gas chromatography mass spectrometer/flame ionization detector (GC/MS) in the summer and winter of 2018. The health risk induced by the VOCs and their potential sources were also quantified. Our results showed that φ(total VOCs)was 105.7×10-9 in the winter, which was 3.1 times higher than that in the summer (34.5×10-9), and alkanes were the predominant component of the ambient VOCs. The non-carcinogenic and carcinogenic risks caused by the toxic VOCs were estimated to be 9.43 and 1.0×10-4 in the winter, respectively, exceeding that in the summer by a factor of 1.7 and 3.8. Acrolein and 1,2-dichloroethane were the dominant species contributing to non-cancer and cancer risks, respectively. Using a positive factorization matrix (PMF) model, the five sources for health risks were identified, including solvent coating materials, biomass burning vehicle emissions, petrochemical refinery, and solvent usage. Note that vehicle emissions contributed the largest fraction (28.2% in summer and 48.0% in winter) to carcinogenic risk in Nanjing. Thus, we highlighted that the strict reduction of specific VOCs from vehicle emissions would decrease the threats to human health in Nanjing City. © 2021, Science Press. All right reserved.
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页码：5673 / 5686
页数：13
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