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.

引用

页码：133 / 144

页数：12

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