2014年茅尾海海水及表层沉积物中6种重金属污染及评价  

Pollution Evaluation of Heavy Metals in Sea Water and Surface Sediments in Maowei Sea

作　　者：李素霞[1,2,3] 韦司棋 林俊良[1,2,3] 王道波[1,2,3] 

机构地区：[1]广西北部湾海洋生物多样性养护重点实验室,广西钦州535000 [2]北部湾海洋生物资源开发与保护重点实验室,广西钦州535000 [3]钦州学院资源与环境学院,广西钦州535000 [4]安徽海峰分析测试科技有限公司,安徽合肥230000

出　　处：《江汉大学学报（自然科学版）》2015年第5期471-476,共6页Journal of Jianghan University：Natural Science Edition

基　　金：广西北部湾海洋生物多样性养护重点实验室;北部湾海洋生物资源开发与保护重点实验室联合资助项目(2015ZC05;2015ZD02);广西省教育厅高校科学技术研究项目(KY2015LX514)

摘　　要：采集了广西钦州茅尾海12个海水样品和对应的海洋表层沉积物样品,分析了茅尾海海水及表层沉积物中Cu、Pb、Zn、Cd、Hg、As的含量,并利用单因子污染指数评价了海水及沉积物在该区的污染程度及利用地积累指数法评价了该区表层沉积物的重金属污染程度。结果表明:海水中Cu、Pb、Zn、Cd、Hg、As平均含量均符合海渔业水质标准,但是Cu、Pb、Zn、Hg平均含量均超出第一类海洋水质标准,且Cu、Pb、Zn、Hg有超标现象。表层沉积物重金属平均污染指数均小于1,均符合一类标准,但是重金属元素Cu、Pb、Zn、Cd、As有超标现象。Pb、Zn、As的地积累指数均较小,Cu、Cd、Hg的地积累指数略大,污染多在钦江和大榄江的入海口附近。The author collected 12 seawater samples and the corresponding marine surface sedimentssamples from Maowei Sea. The heavy metals content such as Cu,Pb,Zn,Cd,Hg,As in seawater andsurface sediments were determined. The index of single factor and geo-accumulation were used to assessheavy metals pollution. The results showed the average concentration of Cu,Pb,Zn,Cd,Hg,As were upto the second-class seawater quality standard and water puality standard for fisheries. But the averageconcentration of Cu,Pb,Zn,Hg were higher than the first-class seawater quality standard and Cu,Pb,Zn,Hg have exceeded the standard. The average pollution level of heavy metals were lower than 1 from thesurface sediments,but the heavy metal Cu,Pb,Zn,Cd,As have exceeded the standard. The geo-accumulation index of Pb,Zn,As were smaller,and the geo-accumulation Index of Cu,Cd,Hg werelarger. Pollution sites were found nearby Qin River and Tai Lam River estuary.

关 键 词：茅尾海 重金属 污染评价 沉积物 

分 类 号：X834[环境科学与工程—环境工程]