环境空气PM2.5中砷元素的测定研究
Determination of As in PM2.5 in Environmental Air
黄莹 1曹寅莹 1姚佳1
作者信息
- 1. 江苏省镇江环境监测中心,江苏 镇江 212000
- 折叠
摘要
采用不同材质滤膜、前处理方式等对环境空气PM2.5中As元素的影响因素进行研究.结果表明:进口石英纤维滤膜As的本底值最低;聚四氟乙烯和石英纤维滤膜空白加标回收率相差不大;微波消解法的精密度和准确度略小于石墨消解法;滤膜砷的质控样测定精密度和准确度良好差异很小;在实样比对中,ICP-MS法测定低浓度PM2.5 中As的相对偏差大于20%、相对标准偏差大于3%.
Abstract
This article measured As in PM2.5 using different materials of filter membrances,and different pre-treatment meth-ods.The results showed that the background value of As was the lowest among the imported quartz filter membranes,and the recovery rates of PTFE and quartz filter membrane were not significantly different.The precision and accuracy of microwave di-gestion method are slightly lower than that of graphite digestion method;the precision and accuracy of the quality control sam-ple determination of arsenic in filter membrane are good with little difference.The relative deviation of As in low concentration PM2.5 measured by ICP-MS was greater than 20%,and the relative standard deviation(RSD%)was greater than 3%in ac-tual sample comparison.
关键词
滤膜/PM2.5/砷Key words
Filter Membrane/PM2.5/Arsenic引用本文复制引用
出版年
2024
NETL
NSTL
万方数据