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	Current status and historical variations of phthalate ester (PAE) contamination in the sediments from a large Chinese lake (Lake Chaohu)
	Kang, Lei ; Wang, Qing-Mei ; He, Qi-Shuang ; He, Wei ; Liu, Wen-Xiu ; Kong, Xiang-Zhen ; Yang, Bin ; Yang, Chen ; Jiang, Yu-Jiao ; Xu, Fu-Liu
	2016
关键词	Phthalate esters Sediment Residual level Temporal-spatial distribution Composition Lake Chaohu PEARL RIVER DELTA ACID-ESTERS ORGANOCHLORINE PESTICIDES SURFACE SEDIMENTS DI-(2-ETHYLHEXYL) PHTHALATE HUMAN EXPOSURE HEALTH-RISKS SOUTH CHINA WATER ECOSYSTEM
英文摘要	The residual levels of phthalate esters (PAEs) in the surface and two core sediments from Lake Chaohu were measured with a gas chromatograph-mass spectrometer (GC-MS). The temporal-spatial distributions, compositions of PAEs, and their effecting factors were investigated. The results indicated that di-n-butyl phthalate (DnBP), diisobutyl phthalate (DIBP), and di(2-ethylhexyl) phthalate (DEHP) were three dominant PAE components in both the surface and core sediments. The residual level of total detected PAEs (aPAEs) in the surface sediments (2.146 +/- 2.255 mu g/g dw) was lower than that in the western core sediments (10.615 +/- 9.733 mu g/g) and in the eastern core sediments (5.109 +/- 4.741 mu g/g). The average content of aPAEs in the surface sediments from the inflow rivers (4.128 +/- 1.738 mu g/g dw) was an order of magnitude higher than those from the lake (0.323 +/- 0.093 mu g/g dw), and there were similar PAE compositions between the lake and inflow rivers. This finding means that there were important effects of PAE input from the inflow rivers on the compositions and distributions of PAEs in the surface sediments. An increasing trend was found for the residual levels of I PAEs pound, DnBP, and DIBP from the bottom to the surface in both the western and eastern core sediments. Increasing PAE usage with the population growth, urbanization, and industrial and agricultural development in Lake Chaohu watershed would result in the increasing production of PAEs and their resulting presence in the sediments. The significant positive relationships were also found between the PAE contents and the percentage of sand particles, as well as TOC contents in the sediment cores.; National Project for Water Pollution Control [2012ZX07103-002]; National Science Foundation of China (NSFC) [41271462, 41030529]; 111 Project [B14001]; Ministry of Education; Peking University; SCI(E); CPCI-S(ISTP); 11; 10393-10405; 23
语种	英语
出处	International Conference on Contaminated Sediments (ContaSed-2015)
DOI标识	10.1007/s11356-015-5173-4
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/457002]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Kang, Lei,Wang, Qing-Mei,He, Qi-Shuang,et al. Current status and historical variations of phthalate ester (PAE) contamination in the sediments from a large Chinese lake (Lake Chaohu). 2016-01-01.

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