Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing, 210042, China.
Nanjing Guohuan Science and Technology Co. Ltd., Nanjing, 210042, China.
Environ Geochem Health. 2019 Oct;41(5):2315-2327. doi: 10.1007/s10653-019-00247-0. Epub 2019 Jan 28.
Polybrominated diphenyl ethers (PBDEs) are a class of organic pollutants. They are used as flame retardants that caused worldwide environmental concern. This study investigated the occurrence of PBDEs in soils and dusts from three plastic manufacture plants and surrounding areas in Eastern China. A total of 13 PBDE congeners were detected using gas chromatography-mass spectrometer (electron impact ionization). The total concentrations of PBDEs range from 2.21 to 558, 19.7-4916, and 8.70-18,451 ng/g dry weight in the soils of three sampling areas, with mean of 1004 ng/g d w; in dusts, the concentrations range from 7240 to 10,469, 684-4482, and 193-3989 ng/g d w, with an overall mean of 3619 ng/g d w. The most abundant congener is the BDE-209, followed by BDE-153 and BDE-85. This indicates that the brominated flame retardant added in the plastic manufacture is mainly the commodity decabromodiphenyl ether. In comparison with other polluted areas around the world, the PBDE concentrations in the soils of the plastic manufacture plants are similar to those in soils of waste plastic disposal areas and PBDEs production sites, but orders of magnitude higher than those in agricultural soils, mountain soils and rural soils. Daily exposure was estimated using the average concentrations of the pollution sites. The hazard quotient shows that the PBDEs pose considerable human health risks, especially to children, to which attention should be paid.
多溴联苯醚(PBDEs)是一类有机污染物。它们被用作阻燃剂,引起了全球环境的关注。本研究调查了中国东部三个塑料制造厂及其周边地区土壤和灰尘中多溴联苯醚的存在情况。使用气相色谱-质谱联用仪(电子轰击电离)检测了 13 种多溴联苯醚同系物。三个采样区土壤中多溴联苯醚的总浓度范围为 2.21 至 558、19.7 至 4916 和 8.70 至 18451ng/g 干重,平均值为 1004ng/g dw;灰尘中浓度范围为 7240 至 10469、684 至 4482 和 193 至 3989ng/g dw,总平均值为 3619ng/g dw。最丰富的同系物是 BDE-209,其次是 BDE-153 和 BDE-85。这表明在塑料制造中添加的溴化阻燃剂主要是商品十溴二苯醚。与世界其他污染地区相比,塑料制造厂土壤中的多溴联苯醚浓度与废塑料处理区和多溴联苯醚生产地的土壤中的浓度相似,但数量级高于农业土壤、山地土壤和农村土壤。使用污染地点的平均浓度估算每日暴露量。危害商数表明,多溴联苯醚对人类健康构成相当大的风险,尤其是对儿童,应予以关注。