DETERMINATION OF AS(III) AND TOTAL INORGANIC ARSENIC BY ONLINE PRETREATMENT IN HYDRIDE GENERATION ATOMIC-ABSORPTION SPECTROMETRY

被引：52

作者：

DRIEHAUS, W ^{[1
]}

JEKEL, M ^{[1
]}

机构：

[1] TECH UNIV BERLIN,INST TECH UMWELTSCHUTZ,FACHGEBIET WASSERREINHALTUNG,SEKR KF 4,W-1000 BERLIN 12,GERMANY

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1992年 / 343卷 / 04期

关键词：

D O I：

10.1007/BF00322868

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the on-line prereduction of As(V) was developed in order to determine As(III) and As(V) with the same sensitivity by continuous flow hydride generation. In this procedure, the sample is continuously mixed with concentrated hydrochloric acid and a potassium iodide-ascorbic acid solution, flows through a heated PTFE-tube and is determined by hydride generation atomic absorption spectrometry in a heated quartz cell. The selective analysis of As(III) is carried out by continuous mixing of the sample with acetic acid and hydride generation. The method allows the rapid determination of inorganic arsenic species at concentrations down to 1-mu-g/l. A manual sample preparation is not required.

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页码：352 / 356

页数：5

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