摘要
[目的]了解鄱阳湖区水产养殖水域受重金属污染情况及其潜在风险程度。[方法]在分析鄱阳湖区水产养殖水域污染现状的基础上,利用单项污染指数法和Hakanson生态风险指数法对鄱阳湖水产养殖水体和沉积物中的重金属污染进行综合评价分析。[结果]从采样点总污染的污染程度值来看,鄱阳湖区水产养殖的底泥污染属于低度污染;总的潜在风险RI分析表明,除蚌类部分区域外,鱼类和蟹类养殖水域的潜在生态风险指数均<150,说明该水域的底泥重金属污染潜在风险为低度生态风险;各污染物对该水域构成的生态风险影响程度排序为:Cu>Cd>Pb>Zn;不同类型水产养殖水域总的潜在风险程度排序为:蚌类>鱼类>蟹类。[结论]鄱阳湖区水产养殖水中重金属含量较低,污染等级属于安全级。
[Objective] The study aimed to understand the pollution statue of heavy metal in aquaculture waters in Poyang Lake and its risk degree.[Method] Based on the analysis of the present situation of aquaculture water pollution in Poyang Lake district,a comprehensive evaluation analysis was made on the pollution of heavy metal in the water body and the deposit of Poyang Lake aquaculture by using single item pollution exponent method and the ecology risk exponent method of Hakanson.[Result] Looking from the pollution degree in sampled sites,the sediment pollution in the aquaculture of Poyang Lake region belonged to the low-pollution.The analysis on the total potential risk of RI showed that the potential risk exponents of fish and crabs aquaculture waters were higher than 150,except of part mussels area,indicating that the potential risk of the heavy metal pollution in the deposit of Poyang Lake waters was at low level of ecology risk.The impact degree of the various pollutants on the ecological risk of this waters was in order of CuCd PbZn.The total potential risk degree of the aquaculture waters with different types was in order of musselsfishcrabs.[Conclusion] The heavy metal content in the aquaculture waters of Poyang Lake region was lower and its pollution belonged to the security level
出处
《安徽农业科学》
CAS
北大核心
2010年第7期3697-3700,共4页
Journal of Anhui Agricultural Sciences
基金
国家水体污染控制与治理科技重大专项项目(2008zx07526-008-03)
国际科技合作资助项目(2006DFB91920)
"十一五"国家科技支撑计划重点项目(2007BAB23CO2)
国家自然科学基金(40672159)
江西省教育厅科学技术研究项目(赣教技字[2005]05号)
全国创新性实验资助项目(071040306)
南昌大学分析测试中心测试基金联合资助项目
关键词
鄱阳湖区
水产养殖
重金属
Poyang Lake region
Aquiculture
Heavy metal
作者简介
胡春华（1976-），男，湖南永州人，博士研究生，研究方向水环境化学。
