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

doi:10.1016/j.marpolbul.2007.05.005

	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
	2007-08-01
发表期刊	MARINE POLLUTION BULLETIN
ISSN	0025-326X
卷号	54 期号:8 页码:1105-1115
文章类型	Article
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.
关键词	Pcbs Southern Yellow Sea Surface Sediments
学科领域	Environmental Sciences ; Marine & Freshwater Biology
DOI	10.1016/j.marpolbul.2007.05.005
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000249162300014
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5402
专题	海洋生态与环境科学重点实验室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.

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