建立了微波消解-电感耦合等离子体质谱同时测定各种塑料中的铅、镉、汞、铬、砷等元素的方法.对仪器的参数设置、进样系统的选择、测试稳定性等方面进行了系统研究,并对塑料标准样品中上述元素分析的前处理条件如消解体系、酸用量、消解温度及时间等进行了优化.方法检出限为0.7—6.5 ng.g-1,加标回收率为89.8%—103.5%,相对标准偏差为0.8%—11.3%. A method for simultaneous determination of lead, cadmium, mercury, chromium, arsenic and other elements in various plastics by microwave digestion-inductively coupled plasma mass spectrometry was established. The parameters of the instrument, the selection of injection system, the stability of the test and so on Systematic research, and the pretreatment conditions such as digestion system, acid dosage, digestion temperature and time of the above-mentioned elemental analysis in plastic standard samples were optimized.METHODS The detection limit was 0.7-6.5 ng.g-1, the spiked recoveries Was 89.8% -103.5%, the relative standard deviation was 0.8% -11.3%.