Radiotracer examination of gas-liquid separators used in arsenic speciation by hydride generation - AAS

被引：0
|
作者：
Van Elteren, J.T. [1 ]
Das, H.A. [1 ]
Bax, D. [1 ]
机构：
[1] Netherlands Energy Res. Foundation, P.O. Box 1, 1755 ZG Petten, Netherlands
来源：
Journal of Radioanalytical and Nuclear Chemistry | 1993年 / 174卷 / 01期
关键词：
Gases; -; Hydrides; Radioactivity;
D O I：
暂无
中图分类号：
学科分类号：
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; dimethylarsenic 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
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