Abstract:The typical E-waste dismantling field was investigated. Based on the comprehensive survey of the concentration of PCBs of multiple environmental media, the health risk of adults in dismantling field of Taizhou in Zhejiang was assessed by the health assessment models of US EPA and the exposure parameters optimized by questionnaires and actual measurement. It was preliminarily concluded that the concentration of PCBs homolog in dismantling field of multiple environmental media in atmosphere and soil were significantly higher than those in other media, which might be related to the direct burning and wet pickling process. The adults’ total cancer risk of PCBs pollution from various of exposure pathways in dismantling field was 2.80×10-3, whereas the total non-cancer risk was 1.64×10-3, which both exceeded the maximum acceptable risk levels recommended by US EPA, ICRP, ect. The cancer and non-cancer risk of the oral exposure were the highest, and that of the breathing exposure ranked the second. Sensitivity analysis result illustrated that, no matter what the exposure pathways, the absolute sensitivity of the cancer and non-cancer risks of the body weight (BW), inhalation rate (IR), actual measured parameter of ingestion rate (IR) of food, skin surface area available for contact and the concentration of pollutants were significant. Therefore, during the health risk assessment process, the exposure parameters of people in study area should be measured with field survey in order to reduce the uncertainty of evaluation results.
杨彦, 于云江, 李定龙, 杨洁, 陆晓松. 电子废弃物拆解场多氯联苯含量及健康风险评价[J]. 中国环境科学, 2012, 32(4): 727-735.
YANG Yan, YU Yun-Jiang, LI Ding-Long, YANG Jie, LU Xiao-Song. Concentration and health risk assessment of PCBs in E-waste dismantling field. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(4): 727-735.