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A. A. Loshin, A. V. Zatirakha, A. D. Smolenkov, O. A. Shpigun
Ion-chromatographic
behavior of anions on silica-based polyelectrolyte anion exchangers
Abstract
Polyelectrolyte anion exchangers based on commercially available
non-sulfonated silicas Silasorb 600 and Kromasil modified with quaternized
poly(4-vinylpyridine) are proposed. The obtained anion exchangers based on
Kromasil allow the simultaneous separation of 10 anions (CH3COO–,
HCOO–, BrO3–, Cl–, NO2–,
NO3–, I–, SCN–, ClO4–,
SO42–) in 20 minutes and demonstrate high efficiency (up
to 30 000 tp/m for NO3-) in the single column ion
chromatography mode with indirect UV-detection using potassium hydrogen phthalate
as an eluent.
Key words:
polyelectrolyte anion exchangers, ion chromatography, silica,
poly(4-vinylpyridine), determination of anions.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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