LONG-TERM STABILITY OF A MIXED PALLADIUM IRIDIUM TRAPPING REAGENT FOR INSITU HYDRIDE TRAPPING WITHIN A GRAPHITE ELECTROTHERMAL ATOMIZER

被引:104
作者
SHUTTLER, IL
FEUERSTEIN, M
SCHLEMMER, G
机构
关键词
INSITU HYDRIDE TRAPPING; GRAPHITE ELECTROTHERMAL ATOMIZER; PALLADIUM IRIDIUM TRAPPING REAGENT;
D O I
10.1039/ja9920701299
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
For hydride trapping and atomization in a graphite electrothermal atomizer the treatment of a pyrolytic graphite coated electrographite tube with a single, manual application of a mixed trapping reagent of 50 mug of palladium and 50 mug of iridium allows up to 300 complete trapping and atomization cycles. Precision is generally better than 3% and the efficiency of trapping is virtually 100% for As, Se and Bi. The application of this mixed palladium-iridium trapping reagent improves the routine use of this technique and considerably simplifies the hardware and software requirements to provide a fully automatic system.
引用
收藏
页码:1299 / 1301
页数:3
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