Singh, Nahar and Singh, Niranjan and Tripathy, S. Swarupa and Soni,, Daya and Singh, Khem and Gupta, Prabhat K.
(2013)
Evaluation of purity with its uncertainty value in high purity lead stick by conventional and electro-gravimetric methods.
Chemistry Central Journal , 7 (108).
108-117.
ISSN 1752-153X
Abstract
Background: A conventional gravimetry and electro-gravimetry study has been carried out for the precise and accurate purity determination of lead (Pb) in high purity lead stick and for preparation of reference standard. Reference materials are standards containing a known amount of an analyte and provide a reference value to determine unknown concentrations or to calibrate analytical instruments. A stock solution of approximate 2 kg has been prepared after dissolving approximate 2 g of Pb stick in 5% ultra pure nitric acid. From the stock solution five replicates of approximate 50 g have been taken for determination of purity by each method. The Pb has been determined as PbSO4 by conventional gravimetry, as PbO2 by electro gravimetry. The percentage purity of the metallic Pb was calculated accordingly from PbSO4 and PbO2.
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Article
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| Additional Information: |
copyright for this article belongs to M/s Chemistry Central |
| Subjects: |
Chemistry |
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UNSPECIFIED |
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| Date Deposited: |
19 Aug 2026 10:07 |
| Last Modified: |
19 Aug 2026 10:07 |
| URI: |
https://npl.csircentral.net/id/eprint/3234 |
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