便携式X荧光分析仪快速测定土壤中Cd· Hg· As· Pb· Cr含量
Rapid Determination of Cd, Hg, As, Pb, Cr Content in Soil by Portable X-ray Fluorescence Analyzer
何俊1
作者信息
- 1. 汉源县环境监测站，四川汉源625300
- 折叠
摘要
[目的]探索便携式X荧光分析仪应用于环境应急监测中的可行性。[方法]采用X荧光分析法选择《土壤环境质量标准》（ GB 15618—1995）中重点监测的Cd、Hg、As、Pb、Cr进行标准样品分析，进行现场实测与实验室样品分析，研究该方法测定这5种重金属的准确度和精密度。[结果]X荧光分析法测定土壤标准物质的相对标准偏差（RSD）为1．77％～22．90％。现场样品实测相对偏差（RD）为－42．00％～18．10％，其中Cr的RD较小，为－21．20％～10．50％；As的RD较大，为－42．00％～18．10％。[结论]便携式X荧光分析仪在土壤重金属环境应急监测中具有一定指导作用。
Abstract
Objective] The aim was to explore feasibility of portable X-ray fluorescenceanalyzer in environmental emergency monitoring.[Meth-od] The method of X-ray fluorescence analysis was used in the determination of standard samples , according to the key heavy metal elements of Environmental Quality Standard for Soil(GB15618-1995),including Cd, Hg, As, Pb, Cr, field measurement and laboratory sample analysis were conducted.The accuracy and precision of determining 5 kinds of heavy metals by the method were studied.[Result] The precision(RSD) of soil reference material determined by X-ray fluorescence method was 1.77% -22.90%.The relative deviation(RD) of the field samples was-42.0%-18.1%, RD of Cr was relatively small (from -21.2% to 10.5%); RD of As was larger (from -42.0% to 18.1%).[Conclu-sion] The portable X-ray fluorescenceanalyzer can play a guiding role in environmental emergency monitoring of soil heavy metals .
关键词
便携式X荧光分析仪/土壤重金属/环境应急监测Key words
Portable X-ray fluorescence analyzer/Soil heavy metal/Environmental emergency monitoring引用本文复制引用
出版年
2016
国家科技期刊平台
NSTL
万方数据