农业环境科学学报2013，Vol.32Issue(8)：1670-1676,7.DOI:10.11654/jaes.2013.08.026
生活垃圾焚烧处理设施周边环境重金属污染健康风险评价
Primary Research on Health Risk Assessment of Heavy Metals in the Surrounding Soil and Air of a Municipal Solid Waste Incinerator(MSWI), South China
摘要
Abstract
The exposure and health risk assessment of heavy metals of the surrounding municipal solid waste incinerator(MSWI) was evaluated using the US EPA risk assessment model.The carcinogenic health risk results showed that risk values of Cr via inhalation were 2.15×10-4～5.75×10-4 for children and 8.59×10-4～2.30×10-3 for adult,higher than the risk threshold level 1.The highest values of As and Pb were 1.84×10-6 and 1.60×10-6,lower than the acceptable level; The carcinogenic health risk values of heavy metals via inhalation exposure were Cr＞As＞Pb with lower value for children than adult,and the value was reduced with the increased distances to MSWI.The carcinogenic health risk of heavy metals via dermal contact exposure was within acceptable level and higher for adults than children.The carcinogenic health risk order of heavy metals was As＞Pb＞Cr.The carcinogenic health risk of heavy metals via ingestion exposure was also within acceptable level and higher for children than adults,with the carcinogenic risk order as Cr＞Pb＞As.The hazard index of T1 for children was 1.02～1.40,higher than the safety threshold level(=1),indicating the potential carcinogenic risk to children.The highest value of Tl for adult was 0.194.The hazard index of Cr for children were 0.633～1.37 and 1.02～1.40 for adult,indicating it might pose non-carcinogenic risk to children and adults.The highest hazard index values of Ni、Cu、Zn、Cd、As、Hg for children and adults were:4.66×10-1、1.58×10-2、1.15×10-2、9.40×10-1、4.83×10-1、1.91×10-2,with the HI order as Cr＞TI＞Cd＞As＞Ni＞Cu＞Zn＞Hg.Our results indicated that Tl and Cr exist health risk in this study area.关键词
垃圾焚烧设施/健康风险评价/重金属Key words
municipal solid waste incinerator(MSWI)/ health risk assessment/ heavy metal分类
资源环境引用本文复制引用
张海龙,李祥平,齐剑英,陈永亨,林必桂,任明忠,方建德..生活垃圾焚烧处理设施周边环境重金属污染健康风险评价[J].农业环境科学学报,2013,32(8):1670-1676,7.基金项目
国家自然科学基金项目(41203061,40903044) （41203061,40903044）
环保公益性科研专项项目(201109001) （201109001）
