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O. V. Krokhin, D. B. Dubovik, A. V. Ivanov, O. A. Shpigun
Determination of
silica and phosphorus as molibdenium heteropolyacids by ion-pair Hplc on
reverse phase
Abstract
The
chromatographic behaviour of molibdenium heteropolyacids of Si and P as ionic
associates with tetrabutylammonium bromide on reverse phase C18 was
studied by ion-pair HPLC. Detection -
UV at 310 nm. The separation conditions were optimized, the technique for
simultaneous chromatographic determination of Si and P was suggested. The
calibration curves are linear in range 0,01¸0,1 mcg/ml (Si) è 0,02¸0,15 mcg/ml (P).
The detection limits are (1,4±0,3)x10-3 mcg/ml (Si) and (6,7 ±1,2)x10-3 mcg/ml
(P). The suggested technique was applied for analysis of the disitllated water.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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