微波消解-电感耦合等离子体质谱法测定丙烯腈-丁二烯-苯乙烯共聚物塑料中的铅、镉、汞、铬、砷  

Determination of Lead, Cadmium, Mercury, Chromium and Arsenic in Acrylonitrile-Butadiene-Styrene Copolymer Using Microwave Digestion-ICP-MS

作　　者：王英锋[1] 施燕支[1] 张华[1] 陈玉红[2] John Lau Steven Wilbur 李平[2] 

机构地区：[1]首都师范大学分析测试中心,北京100037 [2]安捷伦科技有限公司(中国),北京100022

出　　处：《光谱学与光谱分析》2008年第1期191-194,共4页Spectroscopy and Spectral Analysis

基　　金：北京市自然科学基金项目(2063025)资助

摘　　要：建立了微波消解技术-电感耦合等离子体质谱(ICP-MS)法同时测定丙烯腈-丁二烯-苯乙烯共聚物(ABS)塑料中的铅、镉、汞、铬、砷五种元素的方法。对仪器的参数设置、进样系统进行了优化,并对此类塑料样品中上述元素分析的前处理条件,如消解体系、消解温度、恒温时间以及酸用量等进行了优化。方法检出限为0.7～6.5ng·g-1;用加标回收的方法评价了该方法的准确性,加标回收率为89.8%～110.8%;样品测定相对标准偏差为2.8%～11.3%。该方法检出限低、精确度好、准确度高、简单快速、无需基体匹配。A method was studied for the analysis of Cr, As, Cd, Hg and Pb in acrylonitrile-butadiene-styrene copolymer by using ICP-MS. The instrument parameters were optimized and the introduction system was developed systematically. The sample is decomposed by microwave digestion. The digestion condition was optimized concerning digestion system, proportion of acids and digestion procedure, which affords reference for the preparation of the same kinds of polymer samples. The detection limits of the method for all sample elements were 0.7-6.5 ng·g-1, the recoveries were 89.8%-110.8%, and the RSDs were 2.8%-11.3%. The analytical method presented was characterized with good precision and accuracy, simplicity, rapidness, low limits of detection and no matrix matching requirements.

关 键 词：ICP-MS 微波消解 丙烯腈-丁二烯-苯乙烯 元素 

分 类 号：O657.3[理学—分析化学]