X射线荧光光谱法测定沉积物中重金属  

Determination of Heavy Metals in Sediment by X-Ray Fluorescence Spectrometry

作　　者：张思冲[1] 周晓聪 张丽娟[1] 叶华香[1] 

机构地区：[1]哈尔滨师范大学地理科学学院,黑龙江哈尔滨150080 [2]哈尔滨市环境监测中心站,黑龙江哈尔滨150076

出　　处：《实验室研究与探索》2009年第9期39-42,共4页Research and Exploration In Laboratory

基　　金：黑龙江省科技厅科技攻关计划项目(GC07C212);哈尔滨市科技局科技创新人才专项(2008RFXXS011);黑龙江省教育厅2008年科学技术研究面上项目(11531226);哈尔滨师范大学科技发展预研项目(08xkyy06)

摘　　要：以大庆市贴不贴纳污湿地为例,研究纳污湿地沉积物重金属污染。在用X射线荧光光谱法测定纳污湿地沉积物中重金属时,为检测实验分析的可靠性,随机抽取了12个样品做5次重复实验,其中:Cd、Hg、Cr、Zn的相对标准偏差均小于5%;Cu和Pb的相对标准偏差均小于10%;Cr和N i的相对偏差均小于20%。结果表明,X射线荧光法测定样品,不需对固体样品进行消化处理,操作简便,可以同时测定多种元素,效率较高,而且是一种非破坏性的分析方法,样品可重复利用。This paper is an experimental research about heavy metal contamination of sediment in the polluted wet- lands Tie Bu Tie Pool of Daqing, Heilongjiang Province. On the determaination of heavy metals in the sediment by X-ray fluorescence spectromtry, 12 samples were randomly selected and determined for five repeated experiments. The relative standard deviations are all less than 5% of Cd, Hg, Cr, Zn and 10a/v of Cu, Pb and 20% of Cr, Ni. Compared with chemical method, the method of X-ray fluorescence spectrum has the advantages of sampling being simple, analyti- cal speed being quick, result being accurate etc. The precision and reproducibility are in agreement with standard methods.

关 键 词：纳污湿地 X射线荧光光谱法 沉积物 重金属 

分 类 号：X131.2[环境科学与工程—环境科学]