Determination of Arsenic in Dolomites with a Simple Field Spectrometric Device

被引：0

作者：

Katarzyna Stec

Andrzej Bobrowski

Kurt Kalcher

Helmut Moderegger

Walter Goessler

机构：

[1] Institute of Refractory Materials,Department of Building Materials Technology, Faculty of Materials Science and Ceramics

[2] AGH – University of Science and Technology,undefined

[3] Institute of Chemistry,undefined

[4] Analytical Chemistry,undefined

[5] Karl-Franzens University,undefined

来源：

Microchimica Acta | 2006年 / 153卷

关键词：

Key words: Arsenic; dolomite samples; hydride generation; spectrophotometry; ICP-OES; ICP-MS; field device; SupraLab.;

D O I：

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学科分类号：

摘要：

A simple and an inexpensive procedure for the determination of total arsenic in dolomites is proposed. The method applies the spectrometric field device Supralab SD which was initially designed for the determination of arsenic in drinking water. The method relies on the formation of the volatile AsH3 and its reaction with mercuric bromide, immobilized in a membrane, to yield a yellowish-brown reaction product, which is spectrophotometrically detected. The dolomite samples were rapidly dissolved in hot hydrochloric acid in an open vessel and then were analyzed with the portable instrument. The 3 s detection limit of the developed method was 0.1 µg L−1 as in the solution containing dissolved dolomites. The time of As determination in the solution did not exceed 5 min.

引用

页码：45 / 49

页数：4

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