| 西南地区大型综合工业区和周边区域大气VOCs污染特征及健康风险评估 |
| 摘要点击 2366 全文点击 937 投稿时间：2021-05-17 修订日期：2021-07-05 |
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| 中文关键词 挥发性有机物(VOCs) 污染特征 来源解析 健康风险 工业区 |
| 英文关键词 volatile organic compounds (VOCs) pollution characteristics source apportionment health risk industrial area |
| 作者 | 单位 | E-mail | | 李陵 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147 | lilingbryant@163.com | | 张丹 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147
重庆大学化学化工学院, 重庆 401331 | zhang_dan_8888@126.com | | 胡伟 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147 | | | 徐芹 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147 | | | 吴虹 | 重庆工商大学环境与资源学院, 重庆 400067 | | | 袁睿 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147 | | | 蒲茜 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147 | | | 郝宇杭 | 重庆市生态环境科学研究院城市大气环境综合观测与污染防控重庆市重点实验室, 重庆 401147
重庆工商大学环境与资源学院, 重庆 400067 | | | 唐志欣 | 重庆大学化学化工学院, 重庆 401331 | | | 赖明敏 | 重庆工商大学环境与资源学院, 重庆 400067 | |
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| 中文摘要 |
| 为探究工业区大气VOCs污染特征，促进工业区VOCs污染防控，于2020年12月利用苏玛罐在西南地区某大型综合工业区及周边市区的3个观测站点采集VOCs样品，研究了工业区和周边市区的VOCs污染特征、来源解析并开展健康风险评估.结果表明，工业区A点、工业区B点和市区点φ（TVOCs）均值分别为105.25×10-9、222.92×10-9和82.87×10-9，其中一氯甲烷、二氯甲烷、丙酮、乙醇和乙烷均是3个站点体积分数较高的物种.芳香烃和OVOCs对臭氧生成潜势（OFP）具有较大的贡献，累积贡献率超过50%，主要的活性物种为甲基丙烯酸甲酯、甲苯、对-二甲苯和邻-二甲苯；芳香烃的二次有机气溶胶生成潜势（SOAP）贡献率达到了80%以上，主要的活性物种为甲苯、对-二甲苯和邻-二甲苯.PMF来源解析结果表明，主要有6种VOCs来源，依次为石化行业（21.83%）、工业垃圾焚烧（18.6%）、医药制造（16.99%）、化石燃料燃烧（16.03%）、机动车尾气（14.23%）和化学品制造（12.32%）.工业区A点、工业区B点和市区点的危害指数（HI）均值分别为0.55、0.68和0.41，终生癌症风险（LCR）均值分别为6.71×10-6、6.72×10-6和6.58×10-6，工业区HI和LCR均大于市区.风险来源定量评估结果显示，机动车尾气和化石燃料燃烧贡献了相对较高的致癌风险. |
| 英文摘要 |
| To investigate the characteristics of atmospheric volatile organic compound (VOCs) pollution and promote VOCs pollution prevention and control in industrial areas, in December 2020, VOCs samples collected using Summa Canisters at three observation sites were used to study the characteristics of VOCs pollution and source apportionment and to conduct a health risk assessment in large integrated industrial areas and surrounding urban areas in southwest China. The results showed that the mean φ(TVOCs) at site A and site B in an industrial area and at a third urban site were 105.25×10-9, 222.92×10-9, and 82.87×10-9, respectively. Monochloromethane, dichloromethane, acetone, ethanol, and ethane were the species with higher volume fractions at the three sites. Aromatic hydrocarbons and OVOCs had a large contribution to the ozone formation potential (OFP), with a cumulative contribution of more than 50%, and the main reactive species were methyl methacrylate, toluene, p-xylene, and o-xylene; the secondary organic aerosol formation potential (SOAP) of aromatic hydrocarbons contributed more than 80%, with the main active species being toluene, p-xylene, and o-xylene. The results of PMF source analysis showed six main sources of VOCs, in the descending order of the petrochemical industry (21.83%), industrial waste incineration (18.6%), pharmaceutical manufacturing (16.99%), fossil fuel combustion (16.03%), motor vehicle exhaust (14.23%), and chemical manufacturing (12.32%). The mean values of the hazard index (HI) of site A and site B in the industrial area and in the urban site were 0.55, 0.68, and 0.41, respectively, and the mean lifetime cancer risk (LCR) values were 6.71×10-6, 6.72×10-6, and 6.58×10-6, respectively. Both HI and LCR in industrial areas were larger than those in urban areas. The quantitative assessment of risk sources showed that motor vehicle exhaust and fossil fuel combustion contributed relatively high carcinogenic risks. |
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