Bhattacharya, Swagata and Roy, S K and Chakraburtty, A K (1992) Spectrophotometric determination of vanadium in glass and ceramics after extraction of the vanadium—salicylhydroxamic acid complex on polyurethane foam. Analytica Chimica Acta, 257 (1). pp. 123-128. ISSN 0003-2670

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Abstract

A simple spectrophotometric method was developed for the determination of traces of vanadium present in glass and ceramic raw materials. The method involves the formation of a vanadium-salicylhydroxamic acid complex in 1 M HF-H2SO4 medium, followed by extraction on polyether-based polyurethane foam and elution of the complex with acidified acetone (9.5 ml of acetone + 0.5 ml of 1 M HCl) for spectrophotometric measurement at 520 nm. The method obeys Beer's law from 0.5 to 10-mu-g V ml-1. The molar absorptivity was calculated to be 6.9 x 10(3) mol 1(-1) cm-1 at 520 nm. Interferences from other metals, viz., Fe, Co, Mo, Zr, Hf and Ti, were eliminated by using HF medium. The method was applied to several glass and ceramic samples.

Item Type:	Article
Subjects:	Microstructure and Characterization Glass
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	26 Nov 2013 09:31
Last Modified:	28 Feb 2016 17:32
URI:	http://cgcri.csircentral.net/id/eprint/2314

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