Wei Bao-Kai, Liu Chen, Wang Ying, Jin Jun
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
Engineering Research Center for Food Environment and Health, Beijing 100081, China.
Huan Jing Ke Xue. 2020 Oct 8;41(10):4740-4748. doi: 10.13227/j.hjkx.202003188.
The concentration of polybrominated biphenyl ethers (PBDEs) in surface soil and atmosphere of e-waste dismantling sites in Taizhou city, Zhejiang Province was determined. The concentration ranges of ∑PBDEs in surface soil of e-waste dismantling site, farmland, and resident areas in Fengjiang Town (FJ) and Binhai Town (BH) were 21.8-1310 ng ·g and 6.19-220 ng ·g, respectively. No significant difference was observed in the distribution of PBDEs between the FJ and BH soil. The concentration range of ∑PBDEs in the atmosphere of FJ and BH were 262-3240 pg ·m and 840-2990 pg ·m, respectively. The median levels of PBDEs in the atmosphere of FJ and BH were 1410 pg ·m and 840 pg ·m in winter and 1590 pg ·m and 1960 pg ·m in summer, respectively. However, a significant difference was observed in the distribution of 11 PBDE congeners, except BDE-209, during winter and summer seasons. The migration trend analysis showed the differences between the soil and air of FJ and BH. The main migration trend of 3-5-BDEs was the volatilization from soil to atmosphere, and the increase in temperature promoted the volatilization of these PBDEs from soil to atmosphere in FJ. This indicated that the PBDEs in soil had become a major source of pollution emission and suggested that soil remediation should be carried out at the e-waste dismantling site and parts of farmland in FJ. Contrary to FJ, atmospheric deposition was the major migration trend of PBDEs and the soil was the main sink of PBDEs in BH. This indicated that e-waste dismantling site in BH could be a new source of PBDEs emission in this area.
测定了浙江省台州市电子垃圾拆解场地表层土壤及大气中多溴联苯醚（PBDEs）的浓度。在峰江镇（FJ）和滨海镇（BH）的电子垃圾拆解场地、农田及居民区表层土壤中，∑PBDEs的浓度范围分别为21.81310 ng·g和6.19220 ng·g。FJ和BH土壤中PBDEs的分布未观察到显著差异。FJ和BH大气中∑PBDEs的浓度范围分别为2623240 pg·m和8402990 pg·m。FJ和BH大气中PBDEs的中位数水平在冬季分别为1410 pg·m和840 pg·m，夏季分别为1590 pg·m和1960 pg·m。然而，在冬季和夏季，除BDE-209外的11种PBDE同系物的分布存在显著差异。迁移趋势分析表明了FJ和BH土壤与空气之间的差异。3-5-BDEs的主要迁移趋势是从土壤挥发到大气中，温度升高促进了这些PBDEs在FJ从土壤向大气的挥发。这表明土壤中的PBDEs已成为主要的污染排放源，建议对FJ的电子垃圾拆解场地及部分农田进行土壤修复。与FJ相反，大气沉降是BH中PBDEs的主要迁移趋势，土壤是PBDEs的主要汇。这表明BH的电子垃圾拆解场地可能是该地区PBDEs排放的新来源。
