Basak, Samarendra and Kundu, Dipali (2012) Evaluation of measurement uncertainty in determination of lead in glass materials by a standard complexometric method. Mapan-Journal of Metrology Society of India, 27 (3). pp. 175-182. ISSN 0970-3950

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Abstract

Lead is an important constituent for the preparation of wide variety of glasses like high refractive index optical glasses, radiation shielding glasses, ceramic glazes, enamels, high electrical resistance glasses, glass soldiers and sealants, etc. Determination of exact quantity of lead is therefore very essential to obtain the desired property of different glasses. With a view to meet the necessity, the measurement uncertainty of the results of lead determination in different lead containing glasses have been evaluated. The lead content has been determined complexometrically at pH 4.3 using di-sodium salt of EDTA. The sources of uncertainty of the results of measurement have been identified as contributions from repeatability, standardization of EDTA, volume measurement by volumetric flask, burette, pipette and end point detection. Sources of uncertainty have been identified and combined following the EURACHEM guidelines. The results show that the major sources of uncertainty arise from standardization and end point detection.

Item Type:	Article
Uncontrolled Keywords:	Uncertainty measurements; Lead; Volumetric method by EDTA; Crystal glass; Optical glass; Radiation shielding glass
Subjects:	Glass
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	29 Jan 2013 12:52
Last Modified:	30 Jan 2013 12:40
URI:	http://cgcri.csircentral.net/id/eprint/1862

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