摘要
基于某化工园区大气中检出的大气污染物,使用初筛和复筛的方式确定化工园区有毒有害气体环境风险预警因子的选择研究.采用灰色关联分析方法,以所检出的大气污染物中25种挥发性有机物(VOCs)的毒性水平(以TLVs-TWA和RELs-TWA计)、致癌性以及化学反应活性(MIR)为评价指标,确定最终的环境风险预警因子.经分析,苯(关联度0.785)、甲苯(关联度0.582)以及乙烯(关联度0.578)为25种VOCs中危害性较大的物质.在危害性排名前10位的VOCs中,芳香烃占比30％,烷烃占比40％,烯烃占比20％,炔烃占比10％.确定最终预警因子为硫化氢、氯气、氯化氢、二氧化硫、氮氧化物、氨气以及苯、甲苯、乙烯、乙炔、2,3-二甲基丁烷、正戊烷、1,2,4-三甲苯、1-己烯、正庚烷和2-甲基庚烷.
Abstract
Based on the atmospheric pollutants detected in the atmosphere of a chemical park,a study was conducted to determine the selection of environmental risk warning factors for toxic and hazardous gases in the chemical park using initial and re-screening.Gray correlation analysis was used to determine the final environmental risk warning factors using the toxicity levels(in terms of TLVs-TWA and RELs-TWA),carcinogenicity,and chemical reactivity(MIR)of 25 volatile organic compounds(VOCs)in the detected atmospheric pollutants as evaluation indicators.Benzene(correlation 0.785),toluene(correlation 0.582),and ethylene(correlation 0.578)were analyzed as the most hazardous substances among the 25 VOCs.Among the top 10 hazardous VOCs,aromatic hydrocarbons accounted for 30％,alkanes for 40％,olefins for 20％,and alkynes for 10％.The final warning factors identified were therefore hydrogen sulfide,chlorine,hydrogen chloride,sulfur dioxide,nitrogen oxides,ammonia,and benzene,toluene,ethylene,acetylene,2,3-dimethylbutane,n-pentane,1,2,4-trimethylbenzene,1-hexene,n-heptane,and 2-methylheptane.
维普
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