摘要
以南京市江宁大学城校园景观水体为研究对象,分析了水体和底泥中重金属含量,并进行了污染程度评价和相关性分析。结果表明,南京江宁大学城校园景观水体中Zn、Cr含量超过《国家地表水环境质量标准》(GB 3838-2002)Ⅰ类水限值要求,但不影响景观水功能要求。大部分底泥样品中Cr、Cd、Zn、Pb含量超过土壤自然背景值,说明底泥受人为活动影响,对重金属有一定的富集。水体和底泥综合污染指数P综大多在1.0~2.0之间,处于轻度污染水平。相关分析表明Cu-Cd、Cd-Pb在水体和底泥中都存在显著性相关,说明Cu、Cd、Pb这3种金属在水体和底泥中来源一致。
This paper analyzedthe content of heavy metals in the campus landscape water and sediment,with the pollution level beingevaluated.The results showed that concentration of Zn and Cr in the water exceededⅠclass water limits compared with the National Surface Water Environment Quality Standard(GB 3838-2002),but still met the requirement for landscape water.The content of Cr,Cd,Zn and Pb in most sediment samples exceeded the natural background value of soil and had large coefficient of variation,indicating that the accumulation of heavy metals in sediment was influenced by human activities.Thecomprehensive indexes were mostly between 1.0 and 2.0,which showed that the pollution of heavy metals in water and sediments was at thelight pollution level.The correlation analysis showed that Cu-Cd and Cd-Pbwere significantly correlated in water and sediment,indicating that the Cu,Cd and Pb came from the same source as water.
作者
倪正银
刘存丽
潘润
陈程
丁爱芳
NI Zheng-yin;LIU Cun-li;PAN Run;CHEN Cheng;DING Ai-fang(School of Environmental Science,Nanjing Xiaozhuang University,Nanjing 211171,China)
出处
《南京晓庄学院学报》
2019年第6期70-74,共5页
Journal of Nanjing Xiaozhuang University
基金
南京市重点建设学科《环境科学与工程》项目(2018ZHDXK1)
2018年江苏省大学生创新项目(201811460048X)
关键词
重金属
水体
底泥
heavy metal
water
sediment
