典型金矿区入湾河流重金属的时空分布特征及风险评价

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	典型金矿区入湾河流重金属的时空分布特征及风险评价
	蔡永兵 1,3; 孙延康 2; 孟凡德 1,3; 索改弟 1; 李飞跃 1; 范行军 1; 张华 3
刊名	环境化学
	2021
卷号	40 期号:4 页码:1167-1178
关键词	矿区界河沉积物重金属时空分布风险评价
ISSN号	0254-6108
其他题名	Spatial-temporal distribution characteristics and risk assessment of heavy metals in a river flowing into the bay in a typical gold mining area
文献子类	Article
英文摘要	In order to study the pollution characteristics of heavy metals in Jiehe River in a typical gold mining area and propose targeted remediation measures,four sampling surveys were conducted from 2014 to 2016 to analyze the content,occurrence forms and spatial-temporal distribution characteristics of four heavy metals (Zn,As,Cd and Pb) in river water and surface sediments. The pollution levels and ecological risks of the surface sediments were evaluated using the Nemero comprehensive pollution index method and risk assessment coding method. Results showed that the concentrations of Zn,As and Cd of some sampling sites exceeded the national standards of surface water environment quality standard Ⅲ class limits,and Pb concentrations were lower than the limits. Three main pollution sources were identified along the Jiehe river,including the upstream chemical plant,the midstream Guoda Metallurgical Group tailings pond and the Jinchiling gold mine. The water quality of the Jiehe river has not been improved after the river regulation. Therefore,it is necessary to take corresponding measures to repair the three main pollution sources. The contents of Zn,As,Cd and Pb in the sediments were 218-5878,17-4177,1-67 and 35-974 mg·kg~(-1), respectively. The content of weak acid extracted form of Zn and Cd were above 60%,while the speciation distributions of As and Pb varies greatly along the river,mainly in reducible and residual forms. The results of pollution level and risk assessment showed that the sediments in the 11 sampling sites were all heavily polluted. Among the four heavy metals,Zn and Cd have the highest risk level, in 4 sample points Zn and Cd at an extremely high risk level,and As and Pb at a low risk level in most of the sample points. Therefore,pollution remediation should be focused on Zn and Cd pollution.
语种	中文
CSCD记录号	CSCD:6960845
资助机构	国家自然科学基金 ; 安徽省自然科学基金 ; 安徽省高校自然基金重点项目
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30284]
专题	烟台海岸带研究所_近岸生态与环境实验室
作者单位	1.安徽科技学院资源与环境学院,凤阳233100; 2.山东省烟台生态环境监测中心,烟台264000; 3.中国科学院烟台海岸带研究所,海岸带环境过程与生态修复重点实验室,烟台264003
推荐引用方式 GB/T 7714	蔡永兵,孙延康,孟凡德,等. 典型金矿区入湾河流重金属的时空分布特征及风险评价[J]. 环境化学,2021,40(4):1167-1178.
APA	蔡永兵.,孙延康.,孟凡德.,索改弟.,李飞跃.,...&张华.(2021).典型金矿区入湾河流重金属的时空分布特征及风险评价.环境化学,40(4),1167-1178.
MLA	蔡永兵,et al."典型金矿区入湾河流重金属的时空分布特征及风险评价".环境化学 40.4(2021):1167-1178.