Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake
	Liu Honglei ; Li Liqing ; Yin Chengqing ; Shan Baoqing
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2008
卷号	20 期号:4 页码:390-397
关键词	distribution heavy metal risk sediment urbanization
英文摘要	To examine the status and risk of heavy metal pollution in urban lakes, in China, the distribution of several heavy metals (e.g., Cr, Cu, Ni, Pb, Zn) in the sediment of Moshui Lake, Hangyang District, Wuhan City, was characterized. The process of rapid urbanization and industrialization of the district was also studied to find out its relationship with the metal accumulation profile in the sediment. It was found that the total concentration of heavy metals in the sediment was higher than the severe effect level (SEL), at all sampling sites, except those in the riparian zone. The Cr and Cu maximum concentrations were 1,780 and 1,250 mg/kg, approximately 16 and I I times as much as the SEL values, and they appeared as deep as 32 cm in one sample. The carbonate and exchangeable fractions of Zn were more than 50% of the total Zn content, resulting in very high risk according to the Risk Assessment Code (RAC). For Cu and Ni, a medium RAC value was found for carbonate and exchangeable fractions of 11%-20%. As sensitive indicators of contaminants in aquatic systems, heavy metals in the sediment reflect the outcome of regional urbanization, industrialization, and environmental management. With rapid urbanization, sedimentary Pb and Zn concentrations increased. The experimental results showed that high sedimentary heavy metal concentrations had resulted from rapid urbanization and industrialization, which would absolutely lead to substantial aquatic environmental decline in urban lakes.
WOS记录号	WOS:000254963300002
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22247]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Liu Honglei,Li Liqing,Yin Chengqing,et al. Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2008,20(4):390-397.
APA	Liu Honglei,Li Liqing,Yin Chengqing,&Shan Baoqing.(2008).Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,20(4),390-397.
MLA	Liu Honglei,et al."Fraction distribution and risk assessment of heavy metals in sediments of Moshui Lake".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 20.4(2008):390-397.