Screening the emission sources of volatile organic compounds (VOCs) in China by multi-effects evaluation
Screening the emission sources of volatile organic compounds (VOCs) in China by multi-effects evaluation作者机构:State Joint Key Laboratory of Environmental Simulation and Pollution Control College of Environmental Science and Engineering Peking University Beijing 100871 China
出 版 物:《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿(英文))
年 卷 期:2016年第10卷第5期
页 面:25-35页
核心收录:
学科分类:083002[工学-环境工程] 0830[工学-环境科学与工程(可授工学、理学、农学学位)] 07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学]
主 题:Ozone formation Secondary organic aerosol Multi-effects evaluation VOC abatement strategy
摘 要:Volatile organic compounds (VOCs) play important roles in the atmosphere via three main pathways: photochemical ozone formation, secondary organic aerosol production, and direct toxicity to humans. Fewstudies have integrated these effect, s to prioritize control measures for VOC.s sources. In this study,we developed a multi-effects evaluation methodology based on updated emission inventories and source profiles, by combining the ozone formation potential (OFP), secondary organic aerosol potential (SOAP), and VOC toxicity data. We derived species-specific emission inventories for 152 sources. The OFPs, SOAPs, and toxicity of each source were estimated, the contribution and sharing of source to each of these adverse effects were calculated. Weightings were given to the three adverse effects by expert scoring, and then the integrated effect was determined. Taking 2012 as the base year,solvent use and industrial process were found to be the most important anthropogenic sources, accounting for 24.2% and 23.1% of the integrated effect, respectively, followed by biomass burning, transportation, and fossil fuel combustion, each had a similar contribution ranging from 16.7% to 18.6%. The top five industrial sources, including plastic products, rubber products, chemical fiberproducts, the chemical industry, and oil refining, accounted for nearly 70.0% of industrial emissions. Beijing, Chongqing, Shanghai, Jiangsu, and Guangdong were the five provinces contributing the largest integrated effects. For the VOC species from emissions showed the largest contributions were styrene, toluene, ethylene, benzene, and m/p-xylene.