Kunou, Dipali and Roy, S K and Dasgupta, S (1985) A rapid complexometric method for the determination of ZnO, AlZ03 and P2O5 in phosphate-based glasses. Transactions of the Indian Ceramic Society, 44 (5). pp. 106-108. ISSN 0371-750X

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A rapid complexometric method has been developed for determination of ZnO, Al203 and P20s in zinc-phosphate glasses. Aluminium and zinc are determined in one aliquot, and P20 5 in another, from the same stock solution. The method is based on the complexation of both the metals with a known amount of EDTA. EDTA is then selectively relea11ed from AI-EDTA complex by NaF and titrated. The unreleased EDT A establishes zinc. The determination of phosphorus involves precipitation of phosphate with a known excess of lanthanum solution at 60" -70°C and back titration of the excess with EDTA at pH 5.3, zinc and aluminium being premasked with EDT A. Results obtained with synthetic solutions as well as glass samples following the method are quite agreeable to those obtained by the standard methods. © 1985 Taylor & Francis Group, LLC.

Item Type: Article
Subjects: Microstructure and Characterization
Depositing User: Bidhan Chaudhuri
Date Deposited: 23 May 2016 07:06
Last Modified: 23 May 2016 07:06
URI: http://cgcri.csircentral.net/id/eprint/3357

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