生态环境学报Issue(8)：1338-1343,6.
典型电子垃圾拆解区二噁英污染特征、相分配及暴露风险
Pollution Characteristics, Gas/Particle Partitioning and Inhalation Risk Assessment of Dioxin in the Typical e-waste Dismantling Region
摘要
Abstract
Different operating sites in the typical electronic waste (E-waste) dismantling region, south China, have been selected to study. A short-term sampling scheme was devised to determine the levels of gas/particle-bound polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in and to evaluate the impact of PCDD/Fs on the lives of the inhabitants in E-waste dismantling region. Samples were collected from five different operating sites (including one background) of dismantling area, and the results indicated that the particle and gas PCDD/Fs concentrations (toxic equivalent quantity (TEQ)) for dismantling area were 20.64-56.14 pg·m-3(0.293-1.490 pg I-TEQ·m-3) and 3.861-19.29 pg·m-3 (0.384-2.150 pg I-TEQ·m-3), respectively, which were higher than the concentration of particle and gas PCDD/Fs(3.734 pg·m-3 and 2.637 pg·m-3) for the background, and the TEQ in the latter sampling site only has 0.176-0.267 pg I-TEQ·m-3. Based on relation of gas/particle partitioning coefficient and sub-cooled liquid vapor pressure pressure for pollutants, the research for behavior of PCDD/Fs in gas/particle partitioning showed that the gas/particle equilibrium state was weak (-0.27~-0.03) in the most of monitoring sites, except for mixed operation site (the distribution coefficient was-0.64), which were more low molecular weight of monomer compounds in gas phase. Results of daily intake of PCDD/Fs by inhaling air suggested that the inhalation exposure of PCDD/Fs by the inhabitants for children is higher than adults. In addition, the results were higher than daily intake of PCDD/Fs in other city, which indicated that the potential health risks of e-waste dismantling region in this research can not be ignored.关键词
二噁英/电子垃圾/污染特征/相分配/暴露风险Key words
dioxin/E-waste/pollution characteristics/gas/particle partitioning/risk assessment分类
资源环境引用本文复制引用
赵金平,何群华,钟英立,徐小静,向运荣,刘军..典型电子垃圾拆解区二噁英污染特征、相分配及暴露风险[J].生态环境学报,2014,(8):1338-1343,6.基金项目
人才培养专项资金 （2013）
