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T. F. Rudomyotkina, V. M. Ivanov
Photometric
and sorptionic-photometric determination of
beryllium in natural object
Abstract
The techniques direct photometric (2×10–4–5×10–1%)
and sorptionic-photometric (2×10–5–2×10–4 %) methods of
determination berillium in natural objects in the form mixed-ligand of a
complex with chromazurol S and bromide N-cetylpyrydinium, having high molar coefficient
of absorption are developed. The ions of accompanying elements mask by
introduction EDTA and ammonium citrate, and for sorptionic concentration and
the branches enter EDTA and ammonium citrate, as the carrier use silicagel. The
developed techniques are applied for determination of berillium in ores and
mountain breeds. The correctness of results is confirmed by the analysis of the
certificated samples of comparison.
Key words:
berillium,chromazurol S, bromide N-cetylpyrydinium, EDTA, ores, mountain
breeds, photometric determination, sorptionic-photometric determination.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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