Contamination and potential sources of polybrominated diphenyl ethers (PBDEs) in water and sediment from the artificial Lake Shihwa, Korea
Contamination and potential sources of polybrominated diphenyl ethers (PBDEs) in water and sediment from the artificial Lake Shihwa, Korea
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DOI：
10.1016/j.chemosphere.2012.03.091
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发表时间：
2012-08-01
期刊：
影响因子：
8.8
通讯作者：
Choi, Hee-Gu
中科院分区：
文献类型：
--
作者：
Moon, Hyo-Bang;Choi, Minkyu;Choi, Hee-Gu
本研究测定了从石花人工湖及周边溪流采集的水和沉积物中多溴联苯醚（PBDEs）的浓度。23种多溴二苯醚同系物在水和沉积物中的总浓度分别为0.16至11.0纳克/升和1.3至18 700纳克/克（干重）。BDE 209在水和沉积物中的浓度比其他多溴二苯醚同系物的总浓度高1-2个数量级。与先前报告的全球水平相比，沉积物中多溴二苯醚和BDE 209的总浓度最高。水和沉积物中多溴二苯醚浓度最高的地方是工业区附近的小溪。多溴二苯醚的浓度逐渐减少，从小溪到近岸，然后近海地区的湖泊距离增加。BDE 209是一种主要同系物，占水和沉积物中多溴二苯醚总量的80%，这与韩国溴化阻燃剂市场十溴二苯醚的高消费量相一致。非参数多维标度排序显示，周围的小溪是多溴二苯醚污染的主要途径，这些多溴二苯醚污染与十溴二苯醚工业混合物在石花湖周围的工业综合体中使用有关。沉积物中总有机碳与多溴二苯醚总浓度之间存在显著相关性，且各多溴二苯醚同系物的相关系数从低溴到高溴依次增大。(C)2012爱思唯尔有限公司版权所有。
Concentrations of polybrominated diphenyl ethers (PBDEs) were determined in water and sediment collected from the artificial Lake Shihwa and surrounding creeks. Total concentrations of 23 PBDE congeners in water and sediment ranged from 0.16 to 11.0 ng L-1 and from 1.3 to 18 700 ng g(-1) dry weight, respectively. The concentrations of BDE 209 in water and sediment were 1-2 orders of magnitude higher than the total concentrations of other PBDE congeners. The concentrations of total PBDEs and BDE 209 in sediments were the highest compared to previously reported worldwide levels. The highest concentrations of PBDEs in water and sediments were found in creeks near industrial complexes. The PBDE concentrations gradually decreased with increasing distance from the creeks to the inshore and then offshore regions of the lake. BDE 209 was a major congener, accounting for 80% of the total PBDEs in water and sediment, consistent with a high consumption of deca-BDE for the brominated flame retardant market in Korea. Non-parametric multidimensional scaling ordination showed that surrounding creeks are major pathways of PBDE contamination associated with deca-BDE technical mixtures used in industrial complexes around Lake Shihwa. A significant correlation between total organic carbon and total PBDE concentration was found in sediments, and the correlation coefficients for individual PBDE congeners relatively increased from lower to higher brominated congeners. (C) 2012 Elsevier Ltd. All rights reserved.