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Determination of trace chromium (VI) by catalytic kinetic spectrophotometry

Song Xue-sheng

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Abstract

A new kinetic spectrophotometric method for the determination of trace chromium (VI) based on its catalytic of the oxidation product obtain from phosphoric acid-cotton red -potassium bromate system in potassium hydrogenphthalate medium(pH=4.0) in 100℃.The linearrange of the determination is 0～0.06μg·mL~(-1). The detection limit is 7.56×10~(-10)g·mL~(-1).The method has been used to determine trace chromium (VI) in electroplating wasted water samples with satisfactory results.

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What this paper is about

A new kinetic spectrophotometric method for the determination of trace chromium (VI) based on its catalytic of the oxidation product obtain from phosphoric acid-cotton red -potassium bromate system in potassium hydrogenphthalate medium(pH=4.0) in 100℃.The linearrange of the determination is 0～0.06μg·mL~(-1). The detection limit is 7.56×10~(-10)g·mL~(-1).The method has been used to determine trace chromium (VI) in electroplating wasted water samples with satisfactory results.

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Available abstract

A new kinetic spectrophotometric method for the determination of trace chromium (VI) based on its catalytic of the oxidation product obtain from phosphoric acid-cotton red -potassium bromate system in potassium hydrogenphthalate medium(pH=4.0) in 100℃.The linearrange of the determination is 0～0.06μg·mL~(-1). The detection limit is 7.56×10~(-10)g·mL~(-1).The method has been used to determine trace chromium (VI) in electroplating wasted water samples with satisfactory results.

Key concepts: Potassium bromate, Chromium, Chemistry, Spectrophotometry, Phosphoric acid, Potassium periodate, Detection limit, Catalysis

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