School of Biology, Food and Environment, Hefei University, Hefei, 230022, Anhui Province, China.
Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China.
Bull Environ Contam Toxicol. 2021 Feb;106(2):334-341. doi: 10.1007/s00128-020-03054-x. Epub 2020 Nov 26.
This study investigated the temporal changes of PBDEs in the sediment cores from the Anhui Province section of Yangtze River (YR), China. The dramatic increase of ∑Br-Br-BDEs and BDE-209 concentrations in cores in the period of ca. 1990-2008 was consistent with the booming of regional and national production and consumption of household appliances and electronics. Following declines in BDE-209 and ∑Br-Br-BDEs concentrations can be associated with the deceasing use of legacy commercial PBDE mixtures in recent years. Compared with the different regions around the world, sediments in the YR were moderately polluted by PBDEs. The levels and the detection rates of BDE-209 were highest among the detected PBDEs single congener. The composition analysis indicated that Deca-BDE, Octa-BDE, and Penta-BDE were the dominant forms in the YR. The increasing trends of both BDE-209 and ∑Br-Br-BDEs in the YR during 1990s and 2000s largely reflected the time periods for transferring PBDE sources from the developed countries to China. TOC and finer particles were strongly correlated with distributions of PBDEs in sediments.
本研究调查了长江（YR）安徽段沉积物中 PBDEs 的时间变化。1990 年至 2008 年间，∑Br-Br-BDEs 和 BDE-209 浓度在核心中的急剧增加与该地区和全国家用电器和电子产品生产和消费的蓬勃发展相一致。近年来，随着传统商用 PBDE 混合物使用量的减少，BDE-209 和∑Br-Br-BDEs 浓度呈下降趋势。与世界各地的不同地区相比，YR 沉积物中 PBDEs 的污染程度中等。在检测到的 PBDE 单体中，BDE-209 的含量和检出率最高。组成分析表明，十溴二苯醚、八溴二苯醚和五溴二苯醚是 YR 的主要形式。20 世纪 90 年代和 21 世纪初，YR 中 BDE-209 和∑Br-Br-BDEs 的增长趋势在很大程度上反映了将 PBDE 源从发达国家转移到中国的时间。TOC 和细颗粒与沉积物中 PBDEs 的分布密切相关。
