碱熔-电感耦合等离子体法测定大气颗粒物中硅  

Determination of Silicon in Particulate Matter by Alkali Fusion Method and Inductively Coupled Plasma Emission Spectrometry

作　　者：李莉 蔡素婷 雷奉 杜红宇 LI Li;CAI Su-ting;LEI Feng;DU Hong-yu(Chongqing Ecological Environment Monitoring Centre,Chongqing 401147,China)

机构地区：[1]重庆市生态环境监测中心,重庆401147

出　　处：《广州化工》2021年第3期75-77,共3页GuangZhou Chemical Industry

摘　　要：大气颗粒物中元素的快速准确测定,是进行源解析研究的基础,对颗粒物污染状况和污染特征研究具有重要意义,而硅是组分分析中的必测元素。本文用碱熔法对样品进行消解,解决了硅在酸性条件下不易被溶出的难题,将消解处理后的样品溶液引入ICP-AES中进行测定。当采样体积为20 m 3(273 K,101.325 kPa)时,其检出限为0.128μg/m 3,精密度为8.7%~10.8%、准确度为72.7%~95.8%。本文还对分析及数据处理中的关键点进行了讨论,使其在实际工作中更具有可操作性。The rapid and accurate determination of elements in atmospheric particulate matter is the basis of source analysis research,which is of great significance to the study of particle pollution characteristics,and Si element is a necessary element in component analysis.The samples were eliminated by alkali fusion method,the method solved the problem that the silicon element was not easy to be dissolved under acid condition,then The sample solution after digestion was introduced into ICP-AES for determination.When the sample size was 20 m 3(273 K,101.325 kPa),the detection limit was 0.128μg/m 3,the precision was 8.7%~10.8%,the accuracy was 72.7%~95.8%.The key point in analysis and calculation was also discussed,it made more operable in the actual work.

关 键 词：硅元素 碱熔法 大气颗粒物 

分 类 号：X830.2[环境科学与工程—环境工程]