Roy, S K and Kundu, Dipali (1991) Spectrophotometric determination of silver in glass and ceramic materials by foam extraction. Analytical Letters, 24 (1). pp. 139-151. ISSN 0003-2719

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Abstract

A simple spectrophotometric method has been developed for determination of silver in special glasses. The method involves decomposition of glass with hydrofluoric acid and nitric acid, formation of primary Ag(I)- dithizonate in 0.05 M nitric acid and 1 x 10(-5) M dithizone, extraction of silver dithizonate on polyurethane foam, elution with acetone and measurement of absorbance at 500 nm of the colour formed by its secondary complex in ammoniacal acetone medium. The method obeys Beer's law from 0.1-mu-g Ag/ml to 6.0-mu-g Ag/ml. The molar absorptivity has been found to be 3.45 x 10(4)1 mole-1 cm-1 at 500 nm.

Item Type:	Article
Subjects:	Microstructure and Characterization
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	13 Mar 2015 10:36
Last Modified:	13 Mar 2015 10:36
URI:	http://cgcri.csircentral.net/id/eprint/2738

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