PCBs and its coupling with eco-environments in Southern Yellow Sea surface sediments

doi:10.1016/j.marpolbul.2007.05.005

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	PCBs and its coupling with eco-environments in Southern Yellow Sea surface sediments
	Zhang, Peng; Song, Jinming; Liu, Zhigang ; Zheng, Guoxia ; Zhang, Naixing ; He, Zhipeng
刊名	MARINE POLLUTION BULLETIN
	2007-08-01
卷号	54 期号:8 页码:1105-1115
关键词	Pcbs Southern Yellow Sea Surface Sediments
ISSN号	0025-326X
DOI	10.1016/j.marpolbul.2007.05.005
文献子类	Article
英文摘要	In this paper, the spatial distribution and source of the PCBs in surface sediments of the Southern Yellow Sea (SYS) and influencing factors, such as the sediment characteristics (components, relative proportions and total organic carbon contents), and hydrodynamic conditions were analyzed. PCB concentrations in the surface sediments ranged from 518-5848 pg/g, with average values of 1715 pg/g decreasing sharply compared to last year. In the study area, the PCB pollution level in the middle area was the highest, followed by that of the east coast and the west coast, respectively. Although the PCB level in the coastal areas was lower than that in the middle areas, it was proven in our study that the Yellow Sea obtained PCBs by virtue of river inputs. There was a positive and pertinent correlation between the clay proportion and PCB concentrations, and the increase of the PCB concentrations was directly proportional to the increase of TOC contents, with r = 0.61, but it was contrary to the sediment grain size. Consequently, the factors controlling PCB distribution had direct or indirect relationships with sediment grain size; moreover, the hydrodynamic conditions determined the sediment components and grain size. In conclusion, hydrodynamic conditions of the Yellow Sea were the most important influencing factors effecting the distribution of PCBs in the surface sediments of the SYS. (C) 2007 Elsevier Ltd. All rights reserved.; In this paper, the spatial distribution and source of the PCBs in surface sediments of the Southern Yellow Sea (SYS) and influencing factors, such as the sediment characteristics (components, relative proportions and total organic carbon contents), and hydrodynamic conditions were analyzed. PCB concentrations in the surface sediments ranged from 518-5848 pg/g, with average values of 1715 pg/g decreasing sharply compared to last year. In the study area, the PCB pollution level in the middle area was the highest, followed by that of the east coast and the west coast, respectively. Although the PCB level in the coastal areas was lower than that in the middle areas, it was proven in our study that the Yellow Sea obtained PCBs by virtue of river inputs. There was a positive and pertinent correlation between the clay proportion and PCB concentrations, and the increase of the PCB concentrations was directly proportional to the increase of TOC contents, with r = 0.61, but it was contrary to the sediment grain size. Consequently, the factors controlling PCB distribution had direct or indirect relationships with sediment grain size; moreover, the hydrodynamic conditions determined the sediment components and grain size. In conclusion, hydrodynamic conditions of the Yellow Sea were the most important influencing factors effecting the distribution of PCBs in the surface sediments of the SYS. (C) 2007 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences ; Marine & Freshwater Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000249162300014
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5403]
专题	海洋研究所_海洋生态与环境科学重点实验室海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Zhoushan Marine Eco Environm Monitoring Stn Zheji, Zhoushan 316004, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng,Song, Jinming,Liu, Zhigang,et al. PCBs and its coupling with eco-environments in Southern Yellow Sea surface sediments[J]. MARINE POLLUTION BULLETIN,2007,54(8):1105-1115.
APA	Zhang, Peng,Song, Jinming,Liu, Zhigang,Zheng, Guoxia,Zhang, Naixing,&He, Zhipeng.(2007).PCBs and its coupling with eco-environments in Southern Yellow Sea surface sediments.MARINE POLLUTION BULLETIN,54(8),1105-1115.
MLA	Zhang, Peng,et al."PCBs and its coupling with eco-environments in Southern Yellow Sea surface sediments".MARINE POLLUTION BULLETIN 54.8(2007):1105-1115.