Emerging Brominated Flame Retardants in the Sediment of the Great Lakes

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Emerging Brominated Flame Retardants in the Sediment of the Great Lakes
	Yang, Ruiqiang ; Wei, Hua ; Guo, Jiehong ; Li, An
刊名	Engineering; Environmental Sciences & Ecology
	2012
卷号	46 期号:6 页码:3119-3126
ISSN号	0013-936X
中文摘要	The concentrations of 13 currently used brominated flame retardants (BERs) were analyzed in 16 sediment cores collected from the North American Great Lakes. Among them, 1,2-bis(2,4,6-tribromophenoxy)-ethane (BTBPE), decabromodiphenyl ethane (DBDPE), hexabromocyclododecane (HBCD), 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (TBECH), and hexachlorocyclopentadienyl dibromocyclooctane (HCDBCO) were more frequently detected than others. In general, these emerging BFRs have much lower concentrations than polybromodiphenyl ethers (PBDEs) and dechloranes. Inventories of the five BFRs named above, given on a logarithm basis, were found to decrease linearly with the increasing latitude of the sampling locations, but with weaker statistics than those previously reported for the dechloranes. Logarithm of surface fluxes, on the other hand, was found to be a better parameter in correlating with the longitude. With regard to time trends, the exponential increases in concentrations of these BFRs, particularly DBDPE and BTBPE, in recent years are particularly disturbing. The sediment concentration of DBDPE doubles every 3-5 years in Lake Michigan, and approximately every 7 years in Lake Ontario. The corresponding doubling times for BTBPE are about 5 and 7 years in Lakes Ontario and Michigan, respectively, although declines or leveling off were observed in the top sediment layers in Lake Ontario. In contrast to PCBs, PBDEs, and most dechloranes, the correlations between the surface concentration of emerging BFRs and the latitude or longitude of the sampling sites were not strengthened by normalization of the concentration based on the organic matter content of the sediment.
WOS记录号	WOS:000301630200012
公开日期	2014-11-27
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8049]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Yang, Ruiqiang,Wei, Hua,Guo, Jiehong,et al. Emerging Brominated Flame Retardants in the Sediment of the Great Lakes[J]. Engineering; Environmental Sciences & Ecology,2012,46(6):3119-3126.
APA	Yang, Ruiqiang,Wei, Hua,Guo, Jiehong,&Li, An.(2012).Emerging Brominated Flame Retardants in the Sediment of the Great Lakes.Engineering; Environmental Sciences & Ecology,46(6),3119-3126.
MLA	Yang, Ruiqiang,et al."Emerging Brominated Flame Retardants in the Sediment of the Great Lakes".Engineering; Environmental Sciences & Ecology 46.6(2012):3119-3126.