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.
warning factorschemical parkstoxic and hazardous gases
万方数据
维普
