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V. M. Ivanov, R. A. Polyanskov
Bismuthol I Immobilized on
Silicagel as a Reagent for Sorption-Optical Determination of Bismuth (III)
Abstract
By impregnation of
bismuthol I on silochrom S-120 is received sorbent (sC-BisI) for concentration
of bismuth in a static mode from 0.5 M on a sulfuric acid of solutions. The
opportunity of application of PAR is investigated at pH 2–3 for amplification
(strengthening) colouring sorbates at the expense of reaction of an ligands
exchange. The basic opportunity sorbtionic-optical determination of 13–65 mg
wismuth in volume 15 ml is shown. The analysis of the tsvetometric
(colourimetric) characteristics of sorbates has shown presence step of sorption
wismuth(III) in researched system. Capacity of sorbent cC-BisI on bismuth(III)
makes 270 mg on 1 g sorbent. From tsvetometric characteristics of complex
sorbent the yellowness is maximal: molar coefficient of function on wismuth is
equal 1,82×108 for concentration bismuth less then 26 mg in 15
ml of a solution.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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