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首页> 外文期刊>Journal of environmental sciences >Hexabromocyclododecane and tetrabromobisphenol A in sediments and paddy soils from Liaohe River Basin, China: Levels, distribution and mass inventory
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Hexabromocyclododecane and tetrabromobisphenol A in sediments and paddy soils from Liaohe River Basin, China: Levels, distribution and mass inventory

机译：辽河流域沉积物和水稻土中的六溴环十二烷和四溴双酚A：水平，分布和质量清单

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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 Sigma HBCD 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. gamma-HBCD was dominated in sediments, while the abundance of alpha-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. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
机译：六溴环十二烷（HBCD）和四溴双酚A（TBBPA）是两种溴化阻燃剂，广泛存在于环境和生物区系中。研究了东北辽河流域沉积物和稻田土壤中六溴环十二烷和六溴环十二烷的水平，空间分布和物质清单。 Sigma HBCD和TBBPA的浓度分别在未检测到（nd）至4.02 ng / g干重（dw）和0.03至4.06 ng / g dw的范围内。 γ-六溴环十二烷在沉积物中占主导地位，而稻田土壤中的六溴环十二烷的丰度相对较高。六溴环十二烷和六溴二苯醚在表层沉积物和稻田土壤中的空间分布表明，本地点输入是它们的主要来源。总有机碳（TOC）含量与六溴环十二烷含量之间的显着相关性表明，有机碳含量也对沉积物中六溴环十二烷的分布产生影响。同时发现，河水灌溉并不是稻田中六溴环十二烷和六溴联苯醚的主要运输途径。根据这项研究，估计每年辽河水系沉积物中沉积了大约1.67吨六溴环十二烷和2.20吨六溴联苯。沉积物中六溴环十二烷和六溴二苯醚的总库存量远高于稻田。 （C）2016中国科学院生态环境研究中心。由Elsevier B.V.发布

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