The partitioning behavior of persistent toxicant organic contaminants in   eutrophic sediments: Coefficients and effects of fluorescent organic   matter and particle size

doi:10.1016/j.envpol.2016.07.014

CORC > 北京大学 > 城市与环境学院

	The partitioning behavior of persistent toxicant organic contaminants in eutrophic sediments: Coefficients and effects of fluorescent organic matter and particle size
	He, Wei ; Yang, Chen ; Liu, Wenxiu ; He, Qishuang ; Wang, Qingmei ; Li, Yilong ; Kong, Xiangzhen ; Lan, Xinyu ; Xu, Fuliu
刊名	ENVIRONMENTAL POLLUTION
	2016
关键词	Persistent toxicant organic contaminants Partition coefficient (K-D) Organic carbon normalized partition coefficient (K-OC) Organic matter Particle size Fluorescent organic matter (FOM) POLYCYCLIC AROMATIC-HYDROCARBONS PORE-WATER CONCENTRATIONS FREE-ENERGY RELATIONSHIPS SHALLOW CHINESE LAKE POREWATER DISTRIBUTION SURFACE SEDIMENTS PASSIVE SAMPLERS PHTHALATE-ESTERS EEM-PARAFAC PAHS
DOI	10.1016/j.envpol.2016.07.014
英文摘要	In the shallow lakes, the partitioning of organic contaminants into the water phase from the solid phase might pose a potential hazard to both benthic and planktonic organisms, which would further damage aquatic ecosystems. This study determined the concentrations of polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides (OCPs), and phthalate esters (PAEs) in both the sediment and the pore water from Lake Chaohu and calculated the sediment pore water partition coefficient (K-D) and the organic carbon normalized sediment pore water partition coefficient (K-OC), and explored the effects of particle size, organic matter content, and parallel factor fluorescent organic matter (PARAFAC-FOM) on K-D. The results showed that log K-D values of PAHs (2.61-3.94) and OCPs (1.75-3.05) were significantly lower than that of PAEs (4.13-5.05) (p < 0.05). The chemicals were ranked by log K-OC as follows: PAEs (6.05-6.94) > PAHs (4.61-5.86) > OCPs (3.62-4.97). A modified MCI model can predict K-OC values in a range of log 1.5 at a higher frequency, especially for PAEs. The significantly positive correlation between K-OC and the octanol water partition coefficient (K-ow) were observed for PAHs and OCPs. However, significant correlation was found for PAEs only when excluding PAEs with lower K-ow. Sediments with smaller particle sizes (clay and silt) and their organic matter would affect distributions of PAHs and OCPs between the sediment and the pore water. Protein-like fluorescent organic matter (C2) was associated with the K-D of PAEs. Furthermore, the partitioning of PARAFAC-FOM between the sediment and the pore water could potentially affect the distribution of organic pollutants. The partitioning mechanism of PAEs between the sediment and the pore water might be different from that of PAHs and OCPs, as indicated by their associations with influencing factors and K-ow. (C) 2016 Elsevier Ltd. All rights reserved.; National Project for Water Pollution Control in China [2012ZX07103-002]; National Science Foundation of China [41503083, 41271462, 41030529]; SCI(E); PubMed; ARTICLE; xufl@urban.pku.edu.cn; 724-734; 219
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/493460]
专题	城市与环境学院
推荐引用方式 GB/T 7714	He, Wei,Yang, Chen,Liu, Wenxiu,et al. The partitioning behavior of persistent toxicant organic contaminants in eutrophic sediments: Coefficients and effects of fluorescent organic matter and particle size[J]. ENVIRONMENTAL POLLUTION,2016.
APA	He, Wei.,Yang, Chen.,Liu, Wenxiu.,He, Qishuang.,Wang, Qingmei.,...&Xu, Fuliu.(2016).The partitioning behavior of persistent toxicant organic contaminants in eutrophic sediments: Coefficients and effects of fluorescent organic matter and particle size.ENVIRONMENTAL POLLUTION.
MLA	He, Wei,et al."The partitioning behavior of persistent toxicant organic contaminants in eutrophic sediments: Coefficients and effects of fluorescent organic matter and particle size".ENVIRONMENTAL POLLUTION (2016).