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Simultaneous spectrophotometric estimation of thorium and calcium in urine

โœ Scribed by M.V.R. Prasad; D.S. Suryanarayana; R.K. Jeevanram

Publisher
Elsevier Science
Year
1992
Weight
242 KB
Volume
43
Category
Article
ISSN
0883-2889

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โœฆ Synopsis

A simple and rapid method for the simultaneous estimation of thorium and calcium in urine was developed. Thorium and calcium were coprecipitated as oxalates at pH 3-4 and were determined using Thoronol as reagent. A multi-wave-length linear regression analysis procedure was applied. Thorium recovery was found to be 78.3% +/- 5.1% (1 sigma) and that of calcium was 93.7 +/- 3.0% (1 sigma). The minimum detection limit for thorium was found to be 2.54 mBq/dm3. The analytical results of calcium agree very well with those determined by EDTA titrimetry.

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