RADIOTRACER EXAMINATION OF GAS-LIQUID SEPARATORS USED IN ARSENIC SPECIATION BY HYDRIDE GENERATION - AAS

被引：6
|
作者：
VANELTEREN, JT [1 ]
DAS, HA [1 ]
BAX, D [1 ]
机构：
[1] UNIV UTRECHT,ANALYT CHEM LAB,3584 CA UTRECHT,NETHERLANDS
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1993年 / 174卷 / 01期
关键词：
D O I：
10.1007/BF02040341
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Two types of gas-liquid separators for use in on-line hydride generation AAS have been examined: the ''classical'' one, in which gas and liquid are separated by gravity and that based on diffusion through a permeable tube. Results are presented for the determination of arsenic species (arsenite, As(III); arsenate, As(V); monomethylarsonic acid, MMAA; dimethylarsinic acid, DMAA). Yield (of hydride generation and gas-liquid separation) and response time are investigated as functions of the experimental variables. It is concluded that in conjunction with a cold trap, only the 'classical'' gas-liquid separator is satisfactory.
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页码：133 / 144
页数：12
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