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  • Author or Editor: K. Muralikrishna x
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Abstract  

In the present investigation, a simple and selective radioanalytical method for the evaluation of selenium in microgram amounts by substoichiometric isotope dilution analysis has been developed. Potassium benzyl xanthate has been employed as the reagent. The colorless selenium-benzyl xanthate complex was extracted into chloroform. The influence of various ions during the extraction was also critically examined. The method developed has been successfully applied for the analysis of a few agricultural products for selenium.

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Abstract  

A new radiochemical displacement method has been developed for the determination of EDTA /ethylene diamine-tetraacetic acid/. The displacement of labelled zinc from Zn:PAN complex by EDTA at pH 5.5 in borate buffers can be conveniently utilized for the determination of 50–150 g of EDTA. Effects of diverse ions on the determination have also been tested.

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Abstract  

The possibility of determination of microgram quantities of palladium by radiochemical displacement of labelled Zn from Zn: 1-/2-pyridylazo/-2-naphthol comples has been explored. Conditions for quantitative displacement, a calibration in the range of 40–140 g of palladium and the effects of diverse ions have been reported.

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Abstract  

A radiochemical method, based on the displacement of labelled zinc from Zn:PAN /1-/2-Pyridylazo/-2-Naphthol/ complex for the determination of uranium has been developed. 40–160 g of uranium U/VI/ in pH 7 ammonia buffer can be determined. the effect of diverse ions on the displacement reaction has also been studied.

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