飞云江入海口表层沉积物中重金属污染及潜在生态危害评价  

Ecological risk evaluation of heavy metals in surface sediment in coastal area of Feiyun River

作　　者：陈星星[1] 黄振华[1] 潘齐存 陆荣茂[1] 曾国权[1] 柯爱英[1] 黄志行[1] 叶深[1] 

机构地区：[1]浙江省海洋水产养殖研究所浙江省近岸水域生物资源开发与保护重点实验室,浙江温州325005

出　　处：《浙江农业学报》2017年第10期1706-1711,共6页Acta Agriculturae Zhejiangensis

基　　金：浙江省科技厅项目(2015F30021;2016C37071;2016F50032);2016年度温州市重点渔业水域环境监测(DHCG20160307)

摘　　要：于2016年8月采集飞云江入海口瑞安和平阳区域14个站点的表层沉积物,运用无火焰和火焰原子吸收分光法测定2个区域表层沉积物中的重金属含量,并采用Hakanson潜在生态危害指数法对重金属的生态危害进行评价。结果表明,这2个区域各个站位点的重金属污染状况具有一定的相似性:Cu、Zn和Cr的平均单因子污染指数均大于1,属于中等污染程度;瑞安和平阳的平均综合污染指数分别为5.34、5.87,属于低污染程度。平阳的生态风险指数(21.03)大于瑞安(18.37),但指数值都小于150,属于低生态危害程度。在空间分布上,受飞云江和鳌江支流和沿岸流影响,平阳区域污染要大于瑞安区域。In order to explore the status of water environmental quality at Feiyun River estuary,surface sediments of14 sites were collected in Ruian and Pingyang region in August 2016. The contents of heavy metals in surface sediment were analyzed with no flame and flame atomic absorption spectrophotometry,and the ecological risk of heavy metals were assessed by Hakanson potential ecological risk index. It was shown that the situations of heavy metals pollution in the 2 sample areas were similar. The average contamination index of Cu,Zn and Cr was greater than 1,and reached the medium pollution level. The average comprehensive contamination index of Ruian and Pingyang was5. 34 and 5. 87,respectively,which were located in the low pollution level. The ecological risk index of Pingyang（ 21. 03） was greater than that of Ruian（ 18. 37）,indicating low ecological risk level. As influenced by the river and tributaries of the Aojiang Feiyun flow,the pollution of Pingyang region was more severe than that of Ruian.

关 键 词：飞云江入海口 重金属 表层沉积物 生态危害 

分 类 号：X502[环境科学与工程—环境工程]