微波消解-ICP-OES法测定汽车涂料中8种重金属讲解VIP免费

微波消解 -ICP-OES 法测定汽车涂料中8 种重金属含量的方法研究陈 勇1，王学武1，包东风2，胡成群1，唐莲仙1，薛海霞1 （1.金华市质量技术监督检测院浙江金华321001；2.浙江省建筑材料科学研究所有限公司浙江杭州310012）摘 要： 建立了微波消解-电感耦合等离子体发射光谱仪技术（ICP-OES ）分析汽车涂料中铅（ Pb）、铬（ Cr）、硒（ Se）、钡（ Ba）、锑（ Sb）、砷（ As）、镉（ Cd）、汞（ Hg）含量的方法。 实验中探讨了多种混酸体系对样品消解的影响，选择了最佳的消解程序，研究了不同基体的汽车涂料对被测元素的干扰。结果表明，各元素的相对标准偏差RSD 为2.02~12.94%， As、Ba、Cd、Cr、Hg 、Pb、Se 元素的加标回收率为76.47~103.51% ，Sb 元素回收率为60.43~90.91%。该方法快速、简便，具有较好的准确度和精密度，为汽车涂料中重金属含量的监控提供了途径。关键词 :微波消解 ; ICP-OES; 汽车涂料 ; 重金属中国分类号 : O651 文献标识码 :A Determination of eight heavy metals in automotive coating by ICP-OES with microwave digestion method CHEN Yong1,WANG Xuewu1,BAO Dongfeng2,HU Chengqun1,TANG Lianxian1,XUE Haixia1 (1. Jinhua quality and technical supervision and Testing Institute, Jinhua 321001，Zhejiang ，China ; 2.Zhejiang Province Building Materials Science Research Institute Co Ltd Hangzhou 310012，Zhejiang , China）Abstract: A procedure, inductively coupled plasma optical emission spectrometer (ICP-OES) with microwave digestion method, was developed to determinate the lead (Pb), chromium (Cr), selenium (Se), barium (Ba), antimony (Sb), arsenic (As), cadmium (Cd) and mercury (Hg) in automotive coatings. The influence of sample digestion was discussed with a variety of mixed acid system, optimal digestion procedur was selected, different matrix of automotive coatings were studied in the interference of the elements to be measured. The results indicated that RSD, the recoveries of As, Ba, Cd, Cr, Hg, Pb, Se, and Sb were detected to be 2.02–12.94%, ...