摘要
利用等离子质谱仪(ICP-MS)测定了泉州湾48个表层沉积物样品中Cr、Ni、Cu、Zn、As、Cd和Pb等元素的含量,其平均值分别为47.66、52.2、30.86、111.6、5.29、0.399和50.3μg/g.表层沉积物中各元素分布特征显示Cd、Pb、Zn和As元素主要来源于晋江径流;Cr元素主要来源于海湾周边输入;Ni和Cu元素既有晋江河流输入也有海湾周边输入.多元潜在生态风险指数评价结果显示,除Cd元素为强污染强潜在生态风险外,其他元素污染指数在中度污染左右,潜在生态风险轻微;泉州湾表层沉积物综合污染和潜在生态风险程度在中等以上,主要的污染和生态风险重金属是Ni和Cd;高污染区域与高潜在生态风险程度区域一致,位于晋江与洛阳江入海口交汇处.泉州湾表层沉积物中重金属污染仍然严重,应继续加强控制与治理.
The concentrations of 7 heavy metals were determined in 48 surface sediments in the Quanzhou Bay by an inductively coupled plasma mass spectroscopy （ICP-MS）. The average contents of Cr,Ni,Cu,Zn,As,Cd and Pb are 47. 66,52. 2,30. 86,111. 6,5. 29,0. 399 and 50. 3 μg.g ^-1 ,respectively. The Cd,Pb,Zn and As were mainly discharged into the Quanzhou Bay by Jinjiang River,while the materials near the Bay might supply a considerable amount of Cr,Ni and Cu. The result of the multi-analysis ecological risk index analyses revealed that Cr,Ni,Cu,Zn,Pb and As were moderately contaminated and presented low potential ecological risk,while Cd was heavily contaminated and raised high potential ecological risk. In general,moderately contaminated and potential ecological risk were occurred in whole Quanzhou Bay with the dominated polluted metals were Ni and Cd. The heavily contaminated area was corresponded to the high potential ecological risk area,which located at the confluent area of Jinjiang River and Luoyangjiang River. From the results of this study,we conclude that the Quanzhou Bay has been heavily polluted by heavy metals,therefore much environmental control should be continued and strengthen to Quanzhou Bay and its adjacent areas.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2010年第4期931-938,共8页
Environmental Science
基金
福建省青年人才项目(2007F3058)
中国海洋大学海底科学与探测技术教育部重点实验室开放基金项目(2008-08)
国家908专项(908-ZC-Ⅰ-09)
关键词
泉州湾
表层沉积物
重金属
环境评价
污染
Quanzhou Bay
surface sediments
heavy metals
environment assessment
contamination
作者简介
李云海（1980-），男，博士，主要研究方向为海洋沉积学，E-mail：liyunhai1980@gmail．com
