摘要
介绍一种直接固体进样测定塑料中铅、镉的方法.采用德国耶拿分析仪器股份有限公司的ZEEnit600型原子吸收光谱仪,测定微克和毫克级固体样品的精密度在1.9%～14.8%之间,与微波消解方法相比较,该方法简便、快速,同时避免样品的稀释以及试剂的交叉污染.
A new method, Direct solid sampling AAS with electrothermalatomization using a transversely heated atomizer and Zeeman background correctionwas introduced into real sample analysis. The determination of Pb and Cd in plastichas been investigated as an example with the instrument of AAS ZEEnit 600, AnalytikJena AG. The analysis was made without digestion chemicals; the RSD was betweenl.9% ～ 14.8% （n = 6）, compared with liquid sampling graphite furnace AAS analysis. Direct SS AAS proved a good alternative to conventional methods of trace analysisafter wet-chemical digestion and compared favorably with these methods, it can savea lot of work for sample processing, has benefits to avoid dilution and externalcontamination.
出处
《现代仪器》
2006年第3期57-59,共3页
Modern Instruments
关键词
直接固体进样原子吸收光谱
塑料
铅
镉
Solid sampling graphite furnace atomic absorption spectrometry Plastic Iead Cadmium
