大气科学学报2025，Vol.48Issue(5)：763-776,14.DOI:10.13878/j.cnki.dqkxxb.20241028002
典型工业园区环境大气挥发性有机物污染特征及环境影响和健康风险评估
Pollution characteristics,environmental impacts,and health risk assessment of volatile organic compounds in an industrial park
摘要
Abstract
Volatile organic compounds(VOCs)emitted from chemical industrial parks pose significant threats to air quality and human health by driving ground-level ozone(O3)formation,contributing to secondary organic aerosol(SOA)production,and influencing regional climate.Understanding the complex interplay between VOC sources,atmospheric transformations,and associated impacts is essential for designing effective pollution control strategies.This study presents a comprehensive characterization of VOCs within a large chemical industrial park in Nanjing,Jiangsu Province,China-a region facing persistent air quality challenges.Continuous,high-resolution monitoring of 123 VOC species was conducted over a 24-month period using gas chromatography-flame ionization detection/mass spectrometry(GC-FID/MS).The objectives were to:1)establish long-term VOC con-centration profiles;2)quantify seasonal variations and compositional characteristics;3)identify key VOC species and their role in local O3 formation sensitivity;4)evaluate the contribution of industrial emissions to regional o-zone formation potential(OFP);and 5)assess the non-carcinogenic and carcinogenic health risks associated with chronic exposure among nearby residents.The mean total VOC(TVOC)concentration during the study period was 296.89 μg·m-3 with notable reductions observed in the second year(December 2021-November 2022)compared with the first year.Seasonal patterns showed the highest TVOC concentrations in spring,followed by winter,summer,and autumn.Oxygenated VOCs(OVOCs),alkanes,and alkenes dominated the VOC composition.Petrochemical analysis revealed that interactions between nitrogen oxides(NOx)and reactive VOCs strongly influenced O3 production.Elevated nighttime NOx and TVOC concentrations during pollution episodes de-creased significantly after sunrise due to photochemical reactions,often dropping below levels observed on clean days.In summer,VOCs-particularly alkenes such as propylene,ethylene,and 1,3-butadiene-were the dominant contributors to O3 formation,with the industrial park accounting for up to 33％of local OFP.Health risk assess-ment indicated significant non-carcinogenic risks throughout most of the monitoring period,except during the summer and autumn of 2022.Lifetime carcinogenic risks exceeded the acceptable threshold for several VOCs,par-ticularly in winter 2020.Key hazardous species included 1,2-dibromoethane,1,1,2,2-tetrachloroethane,bromodi-chloromethane,carbon tetrachloride,1,2-dichloroethane,benzene,1,3-butadiene,and acetaldehyde. This study highlights the necessity of long-term VOC monitoring in industrial parks and its critical role in guiding air quality management and protecting public health.Future research should prioritize:l)application of ad-vanced source apportionment methods(e.g.,positive matrix factorization)to pinpoint and control dominant emis-sion sources;2)detailed investigation of OVOC origins and transformation pathways to better constrain secondary pollutant formation;and 3)incorporation of vertical profile monitoring to improve understanding of atmospheric transport and enhance the accuracy of regional air quality models.关键词
工业园区/挥发性有机物/臭氧生成潜势/臭氧生成敏感性/健康风险评价Key words
industrial parks/volatile organic compounds/ozone formation potential/ozone formation sensitivity/health risk assessments引用本文复制引用
章许云,李海玮,张玲玲,吴剑,张亚一,盛夏,陈丽琴,许心远,吴海锁,汪俊峰,盖鑫磊..典型工业园区环境大气挥发性有机物污染特征及环境影响和健康风险评估[J].大气科学学报,2025,48(5):763-776,14.基金项目
国家自然科学基金项目(22376103 （）
22006071) （）
