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Spectrophotometric Determination of Trace Chromium Using Oxidation Acid Chrome Blue K

He Quan

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Abstract

A gpectrophotometric method for the determination of trace chromium(Ⅵ)has been used. The decoloring of acid chrome blue K oxidized by chromium(Ⅵ) in medium sulfuric acid has been studied.The maximum absorbance is at 525 nm, Beer's law is obeyed in the concentration range of 0-20 μg /25 mL the detection limit is 1.72×10-8 g/mL.The method has been applied to the determination of Cr(Ⅵ) in water and industry water with satisfactory results.

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What this paper is about

A gpectrophotometric method for the determination of trace chromium(Ⅵ)has been used. The decoloring of acid chrome blue K oxidized by chromium(Ⅵ) in medium sulfuric acid has been studied.The maximum absorbance is at 525 nm, Beer's law is obeyed in the concentration range of 0-20 μg /25 mL the detection limit is 1.72×10-8 g/mL.The method has been applied to the determination of Cr(Ⅵ) in water and industry water with satisfactory results.

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Available abstract

A gpectrophotometric method for the determination of trace chromium(Ⅵ)has been used. The decoloring of acid chrome blue K oxidized by chromium(Ⅵ) in medium sulfuric acid has been studied.The maximum absorbance is at 525 nm, Beer's law is obeyed in the concentration range of 0-20 μg /25 mL the detection limit is 1.72×10-8 g/mL.The method has been applied to the determination of Cr(Ⅵ) in water and industry water with satisfactory results.

Key concepts: Chromium, Absorbance, Sulfuric acid, Detection limit, Chemistry, Trace Amounts, Spectrophotometry, Nuclear chemistry

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