论文南京市梅雨期雨洪沉积物重金属污染评价是关于本文可作为相关专业梅雨论文写作研究的大学硕士与本科毕业论文2018年梅雨季节论文开题报告范文和职称论文参考文献资料。
摘 要：
為了了解南京市梅雨季节雨洪沉积物重金属含量及其污染程度的危害,在研究区域内采集24处样品,检测其Zn,Pb,Cr,Ni和Cd共5种重金属元素的含量,用皮尔逊相关系数和组合因子分析探讨雨洪沉积物中各重金属的相关性,并用地累积指数法和潜在生态危险指数法评价其污染程度和生态风险.结果表明：南京市雨洪沉积物中Zn,Pb,Cr,Ni和Cd的质量分数分别为116.64、43.56、86.32、41.13、0.32 mg/kg,分别是江苏省土壤元素背景值的1.8、1.98、1.14、1.29、4.00倍,地累积指数评价结果表明：5种重金属污染程度由强到弱依次为：Cd>Zn>Pb>Ni>Cr,Cd、Pb处于中度污染,Cr无污染.潜在生态危险指数评价结果表明：单项潜在生态风险系数Eir从大到小为：Cd>Pb>Ni>Cr>Zn,5种重金属的单项潜在生态风险系数Eir<40,综合潜在生态风险系数除Cd以外,RI<150,处于轻微潜在生态风险；路面雨洪沉积物中Zn、Pb和Ni主要受交通及人流量影响,Cr主要受土壤风化以及建筑废材影响.研究结果对区域内环境重金属污染的控制、环境评价和城市布局具有指导意义.
关键词：
雨洪沉积物；重金属；地累积指数；潜在生态危险指数；污染评价
中图分类号：X 53；X 825 文献标识码：A 文章编号：1001-005X（2017）01-0028-05
Pollution Evaluation of Heavy Metal in StormwaterSediment in Nanjing in Rainy Season
Luo Hui,Zhou Shuyu,Huang Xin*,Tong Lei
（School of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China）
Abstract：
In order to know the risk of heavy metal element content in sediment of stormwater and the degree of pollution hazard in Nanjing in rainy season,24 samples were obtained and the metal elements of Zn,Pb,Cr,Ni and Cd were measured.Pearson correlation coefficient and combination of factor analysis were used to examine the relationship between various heavy metals in sediments.Methods of cumulative index and potential ecological risk index were used to evaluate the degree of pollution and ecological risk of heavy metals.The results indicated that the mean concentrations of Zn,Pb,Cr,Ni and Cd in sediment of stormwater were 116.64,43.56,86.32,41.13 and 0.32mg/kg,respectively,which were 1.8,1.98,1.14,1.29 and 4.00 times of the Jiangsu soil background values.The index of geoaccumulation analysis results showed that the pollution degree of 5 kinds of heavy metals followed respectively：Cd>Zn>Pb>Ni>Cr and the Cd、Pb were non-to moderate-pollution and the Cr was of non-pollution.The results of potential ecological risk index analysis showed that single potential ecological risk coefficient Eir of 5 kinds of heavy metals was described in following order：Cd>Pb>Ni>Cr>Zn.Single potential ecological risk coefficient Eir was less than 40 and potential ecological risk index RI was less than 150.Five kinds of heavy metal in sediment of stormwater all belonged to a light potential ecological risk.The Zn,Pb and Ni mainly came from transportation and people stream.The Cr mainly came from weathering soil and architecture source.The results of this study had important realistic meaning for heavy metal pollution control,environmental quality assessment and the city layout program.
总结:这篇梅雨论文范文为免费优秀学术论文范文,可用于相关写作参考。
参考文献：
1、 湿地重金属沉积物污染评价方法 湿地的基本概况湿地是人类重要的环境资本，也是富集生物多样性和具有较高生产力的生态系统。它不但蕴涵丰富的自然资源 ，还具有巨大的环境调节功能和生。
2、 爱心化雨慧心润物 [摘要]在班主任教学工作中经常会遇到“火药桶”式学生，任其发展和爆发会给班级及学校教学带来很多问题。通过关心、引导、合作、交流等过程，改正学生的。
3、 鄂尔多斯盆地东缘临兴地区二叠系沉积物源方向分析 摘要：重矿物资料在沉积物物源分析中被广泛地应用。为给临兴地区地下致密沙岩气储层特征分析和储层预测提供基础资料和依据，本文对研究区LX-1井、LX。
4、 遥感技术在矿区土壤重金属污染评价中应用 摘要：遥感技术具有宏观性和现势性强、综合信息丰富等优势，为矿区土壤重金属污染评价提供了可行的方法。本文综述了遥感技术在矿区土壤重金属污染评价方面。
5、 发达国家雨洪管理对我国海绵城市建设探究 【摘要】海绵城市建设在解决城市雨排问题中逐渐受到社会关注，但由于其建设理念与传统形式的城市雨洪管理存在明显差别，我国十六个试点城市在实施过程中面。
6、 十堰市畜禽养殖场周边土壤重金属污染评价 摘 要： 分析了十堰市3个典型畜禽养殖场周边土壤重金属污染影响，结果表明：3个畜禽养殖场周边土壤综合评价为安全（清洁），在15个监测点位中有4个。