基于IC-ICP-MS联用分析检测大气颗粒物中可溶性不同形态砷化合物  

Speciation analysis of arsenic in soluble fraction of atmospheric particulate matter by using IC-ICP-MS

作　　者：付诗兰 董永强 曾宝珊 Fu Shi-lan;Dong Yong-qiang;Zeng Bao-shan(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou,Fujian 350117,China;College of Chemistry,Fuzhou University,Fuzhou,Fujian 350108,China)

机构地区：[1]福建师范大学化学与材料学院,福建福州350117 [2]福州大学化学学院,福建福州350108

出　　处：《福建分析测试》2022年第2期5-9,共5页Fujian Analysis & Testing

摘　　要：基于微波辅助提取和离子色谱-电感耦合等离子体质谱(IC-ICP-MS)联用技术,本论文建立了一种分析检测大气颗粒物中可溶性As^(3+)、As^(5+)、一甲基砷(MMA)和二甲基砷(DMA)的分析方法。所建立的方法具有灵敏度高、稳定性、可靠性和准确度好等特点。As^(3+)、As^(5+)、MMA和DMA的检测限分别为0.10 ng/mL、0.08 ng/mL、0.12 ng/mL和0.09 ng/mL。利用所建立的方法,我们成功检测了实际大气颗粒物中可溶性As^(3+)、As^(5+)、MMA和DMA,实际大气颗粒物样品的加标回收率大于94%,4次重复测定的相对标准偏差(RSD)小于4%。本方法的建立为更加客观、准确评估大气颗粒物中砷的潜在健康分析提供了技术支撑。A method was developed for accurate detection of As^(3+),As^(5+),monomethylarsonic acid(MMA)and dimethylarsin⁃ic acid(DMA)in the soluble fraction of atmospheric particulate matter(APM).The proposed method has obvious advan⁃tages,such as high sensitivity,better stability,reliability and accuracy.The method has a detection limit of 0.10 ng/mL for As^(3+),0.08 ng/mL for As^(5+),0.12 ng/mL for MMA and 0.09 ng/mL for DMA.By using the proposed method,we have success⁃fully detected soluble As^(3+),As^(5+),MMA and DMA in real atmospheric particulate matter,with a recovery>94%and a RSD(n=4)<4%.The establishment of this method is expected to provide a technical support for scientifically and accurately as⁃sessing the health risk of arsenic from APM exposure.

关 键 词：气溶胶 砷 形态分析 大气颗粒物 

分 类 号：O658.9[理学—分析化学]