College of Life and Environmental Sciences, Minzu University of China, Beijing, 100081, China.
National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing, 100050, China.
Environ Geochem Health. 2021 Mar;43(3):1177-1191. doi: 10.1007/s10653-020-00645-9. Epub 2020 Jun 30.
Available information is still insufficient for a comprehensive understanding of the global distribution of polybrominated diphenyl ethers (PBDEs) in the environment. In particular, little is known about the changing trend of their distribution in urban soils. We conducted a survey of 21 PBDEs in urban soils from Tianjin, China. The chemicals were widely present in the area and summed concentrations ranged from 0.65 to 108 ng/g in soil, indicating low to moderate levels of pollution relative to other areas. BDE-209 was the predominant congener, contributing 88.9% of the concentrations of total soil PBDEs. Source assessment indicated that soil PBDEs in the area were mainly derived from the release of commercial deca-BDE from local industrial production processes and consumer products. We found that the soil concentrations of PBDEs appear to have declined in recent years, compared with other previous reports in this region. However, more studies are needed on this possible change trend of PBDE pollution, especially its impact on human health, although their calculated non-carcinogenic health risks in this study were low.
有关环境中多溴二苯醚（PBDEs）的全球分布情况，目前可获得的信息仍然不够充分。特别是，关于它们在城市土壤中的分布变化趋势，人们知之甚少。我们对中国天津的城市土壤中的 21 种 PBDEs 进行了调查。该地区的这些化学物质广泛存在，其总浓度范围为土壤中的 0.65 至 108ng/g，表明与其他地区相比，污染程度处于低到中度水平。BDE-209 是主要的同系物，占土壤中总 PBDE 浓度的 88.9%。来源评估表明，该地区土壤中的 PBDEs 主要来源于当地工业生产过程和消费产品中商用十溴二苯醚的释放。与该地区之前的其他报告相比，我们发现近年来土壤中 PBDEs 的浓度似乎有所下降。然而，需要对这种可能的 PBDE 污染变化趋势进行更多研究，特别是其对人类健康的影响，尽管本研究中计算出的非致癌健康风险较低。
