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| 生活垃圾焚烧发电厂周边环境二噁英污染水平及人群暴露评估 |
| Dioxins Pollution Levels and Exposure Assessment in A Domestic Waste Incineration Power Plant Surroundings |
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| DOI： |
| 中文关键词: 生活垃圾焚烧 二噁英 环境污染 暴露评估 |
| 英文关键词: Domestic waste incineration Dioxins Environmental pollution Exposure assessment |
| 基金项目:江苏省环保科研课题“江苏省垃圾焚烧及危废焚烧行业二噁英排放现状及特点研究”基金资助项目（2014013） |
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| 中文摘要: |
| 选取某典型生活垃圾焚烧发电厂为研究对象，监测其周边环境空气、土壤、地下水、农作物等环境介质中二噁英的浓度水平，初步评估周边人群二噁英暴露水平。研究结果表明，该厂周边环境空气、土壤、地下水中二噁英测定值分别为0.236 pgTEQ/m3～0.331 pgTEQ/m3、1.94 ngTEQ/kg～2.71 ngTEQ/kg、0.17 pgTEQ/L～0.26 pgTEQ/L，企业排放的二噁英对周边环境影响较小；成人和儿童在暴露介质中摄入二噁英总量分别为0.959 pgTEQ/(kg·d)和1.59 pgTEQ/(kg·d)，均低于4 pgTEQ/(kg·d)的标准，经大米和面粉摄入二噁英的量超过总暴露量的90%，提示食物是人群二噁英暴露的主要介质。 |
| 英文摘要: |
| A typical domestic waste incineration power plant was selected as the research objective, and the concentration of dioxins in ambient air, soil, groundwater and crops were monitored for assessing human exposure level. The concentration of dioxins in ambient air, soil and groundwater in the surrounding area of the power plant were 0.236 pgTEQ/m3 ～ 0.331 pgTEQ/m3, 1.94 ngTEQ/kg ～ 2.71 ngTEQ/kg and 0.17 pgTEQ/L ～ 0.26 pgTEQ/L, respectively. Dioxins emissions had less impact on the surrounding environment. Dioxin exposure dose estimation showed that dioxin exposure levels for adults and children living in the study area were 0959 pgTEQ/(kg·d) and 1.59 pgTEQ/(kg·d), respectively, which were below the tolerable intake level of 4 pgTEQ/(kg·d). Dioxin exposure dose through rice and flour were more than 90% of the total, revealing that food was the dominant source of dioxin exposure. |
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