STUDIES WITH DESOLVATION IN INDUCTIVELY COUPLED PLASMA MASS-SPECTROMETRY

被引:63
作者
TSUKAHARA, R
KUBOTA, M
机构
[1] NATL CHEM LAB IND,1-1 HIGASHI,YATABE,IBARAKI 305,JAPAN
[2] SUMITOMO MET MIN CO LTD,CENT RES LABS,ICHIKAWA,CHIBA 272,JAPAN
关键词
D O I
10.1016/0584-8547(90)80133-4
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The influence of water loading in the plasma on the signals of ions has been studied using an inductively coupled plasma-mass spectrometer with a sample introduction system consisting of a concentric nebulizer, a spray chamber and a desolvator (i.e. a heater and a condenser). The amount of water vapor introduced into the plasma was changed by changing the cooling temperature of the condenser. The ratios of Ba2+/Ba+, BaO+/Ba+ and ArO+/Co+ decreased with decreasing amount of water vapor. Spectroscopic interferences arising from rare earth oxide and hydroxide ions were lowered by approximately one order of magnitude with the condenser cooled to 0°C, compared with those obtained using conventional sample introduction. Rare earth element impurities, such as Tm and Lu suffering interference from GdOH+, in Gd2O3, were determined with the desolvator. Ion kinetic energies are also given with and without desolvation. © 1990.
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页码:581 / 589
页数:9
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