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A Catalytic Spectrophotometric Method for the Analytical Determination of Trace Amounts of Mercury (II)

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Author(s): A Raghavendra Guru Prasad

Journal: Chemical Sciences Journal
ISSN 2150-3494

Volume: 2010;
Start page: CSJ;
Date: 2010;
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Keywords: Mercury (II) Determination | Catalytic Method | Spectrophotometry

ABSTRACT
A catalytic method has been developed for the determination of microgram amounts of mercury (II) based on its catalytic effect on the rate of aligand substitution reaction. The reaction studied involved the substitution of cyanide in hexacyanoferrate (II) by resacetophenone benzoic acidhydrazone (2’, 4’- dihydroxy propiophenone benzoic acid hydrazone) and the reaction was monitored spectrophotometrically. Satisfactory resultswere obtained for the determination of mercury (II) in the range 0.1086-0.9774 μg/ml. The relative standard deviation was less than 2.1%. Themethod detection limit and limit of quantification was found to be 0.041 μg/ml and 0.083 μg/ml respectively (n=7). The correlation coefficient forthe determination was found to be 0.9989. The effect of foreign ions on the determination was studied.
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