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Spectrophotometric determination of arsenic in environmental and biological samples

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A simple and sensitive spectrophotometric method has been developed for the determination of arsenic using variamine blue as a chromogenic reagent. The method is based on the reaction of arsenic(III) with potassium iodate in acid medium to liberate iodine, which oxidizes variamine blue to form a violet coloured species having an absorption maximum at 556 nm.

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Báo cáo khoa học:Spectrophotometric Determination of Allopurinol in Tablet Formulation
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