Extensive study of potential harmful elements (Ag, As, Hg, Sb, and Se) in surface sediments of the Bohai Sea, China: Sources and environmental risks

doi:10.1016/j.envpol.2016.05.034

	Extensive study of potential harmful elements (Ag, As, Hg, Sb, and Se) in surface sediments of the Bohai Sea, China: Sources and environmental risks
	Li, Li 1,2; Cui, Jingjing 1; Liu, Jihua 1,2; Gao, Jingjing 1; Bai, Yazhi 1; Shi, Xuefa 1,2
刊名	ENVIRONMENTAL POLLUTION
	2016-12
卷号	219 页码:432-439
关键词	Arsenic Silver Mercury Antimony Bohai sea
ISSN号	0269-7491
DOI	10.1016/j.envpol.2016.05.034
英文摘要	This study analyzed 405 surface sediment samples, obtained from across the Bohai Sea, for concentrations of five potentially harmful elements (Ag, As, Hg, Sb, and Se) and several ancillary parameters (Al, Fe, Mn, total organic carbon (TOC), and grain size). Statistically, the spatial distributions of these elements were correlated positively with Al, Fe, TOC, and grain size, indicating natural sources for these elements or common accumulation mechanisms. The assessment of potential environmental risk with empirical sediment quality guidelines showed that a significant proportion of the samples had As and Sb concentrations that exceeded the effects range low (ERL) or T-20 values in the Bohai Sea, indicating the potential for adverse biological effects. However, the assessment results differed when using evaluation methods that considered background values. Based on the geoaccumulation index (I-geo), Hg and Ag were found to have the highest percentages (35% and 60%, respectively) in samples that were moderately contaminated. The estimated contamination degree (C-d) suggested higher contamination levels for the entire area, with 69% of the samples being moderately contaminated. Generally, except for some local hotspots, such as Jinzhou Bay, the contamination levels of these elements in the Bohai Sea were established as slight to moderate. Samples from the Jinzhou Bay area had concentrations that were 10-100 times higher than in the rest of the Bohai Sea, indicating severe contamination. (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	908 Project of State Oceanic Administration, China[908-01-CJ06]
WOS关键词	METAL POLLUTION ; COASTAL WATERS ; TRACE-ELEMENTS ; BAY ; CONTAMINATION ; SILVER
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000390734100049
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26191]
专题	自然资源部第一海洋研究所
通讯作者	Li, Li
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Li, Li,Cui, Jingjing,Liu, Jihua,et al. Extensive study of potential harmful elements (Ag, As, Hg, Sb, and Se) in surface sediments of the Bohai Sea, China: Sources and environmental risks[J]. ENVIRONMENTAL POLLUTION,2016,219:432-439.
APA	Li, Li,Cui, Jingjing,Liu, Jihua,Gao, Jingjing,Bai, Yazhi,&Shi, Xuefa.(2016).Extensive study of potential harmful elements (Ag, As, Hg, Sb, and Se) in surface sediments of the Bohai Sea, China: Sources and environmental risks.ENVIRONMENTAL POLLUTION,219,432-439.
MLA	Li, Li,et al."Extensive study of potential harmful elements (Ag, As, Hg, Sb, and Se) in surface sediments of the Bohai Sea, China: Sources and environmental risks".ENVIRONMENTAL POLLUTION 219(2016):432-439.