Hexabromocyclododecane and tetrabromobisphenol A in sediments and paddy soils from Liaohe River Basin, China: Levels, distribution and mass inventory

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• 作者：Fang Li¹ ; ² ; ^{lfwave@163.com" class="auth_mail" title="E-mail the corresponding author} ; Jing Jin¹ ; Dongqin Tan¹ ; ² ; Longxing Wang¹ ; Ningbo Geng¹ ; Rong Cao¹ ; ² ; Yuan Gao¹ ; Jiping Chen¹ ; ^{chenjp@dicp.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Hexabromocyclododecane ; Tetrabromobisphenol A ; Level ; Distribution ; Mass inventory ; Liaohe River Basin
• 刊名：Journal of Environmental Sciences
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：48
• 期：Complete
• 页码：209-217
• 全文大小：796 K

文摘

Hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA) are two kinds of brominated flame retardants and widely present in the environment and biota. The levels, spatial distributions and mass inventories of HBCD and TBBPA were investigated in sediments and paddy soils from the Liaohe River Basin in northeast China. The concentrations of ΣHBCD and TBBPA were in the range of not detected (nd) to 4.02 ng/g dry weight (dw) and 0.03 to 4.06 ng/g dw, respectively. γ-HBCD was dominated in sediments, while the abundance of α-HBCD was relatively high in paddy soils. The spatial distributions of HBCD and TBBPA in surface sediments and paddy soils indicated that the local point-input was their major source. The significant correlation between total organic carbon (TOC) contents and the HBCD levels suggested that TOC content also exerted an influence on the distribution of HBCD in sediments. Meanwhile, it was found that the irrigation with river water was not the major transportation pathway of HBCD and TBBPA in paddy soils. Based on the study, it was estimated that there were about 1.67 tons HBCD and 2.20 tons TBBPA deposited into sediments of the Liaohe River system every year. The total mass inventories of HBCD and TBBPA in sediments were far higher than that in paddy soils.