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2005•Journal of Huaihai Institute of TechnologyRequires access

A Study on the Determination of Trace Copper(II) by Catalytic Kinetic Spectrophotometry

Wenbin Chen

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Abstract

A new catalytic kinetic spectrophotometric method for the determination of trace copper(Ⅱ) is studied. It is based on the catalyzed oxidation of manganese(Ⅱ) by ammonium persulfate in the medium of H 2SO 4. The linear range of the determination is 0～5.0 mg/50 mL, the detection limit is 3.56×10~(-8) g/L, and the linear regression equation is ΔA=4.642 8ρ(mg/50 mL)+ 0.010 75, the correlation coefficient is 0.994 8. The method has been applied to the determination of trace copper in copper samples with satisfactory results.

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What this paper is about

A new catalytic kinetic spectrophotometric method for the determination of trace copper(Ⅱ) is studied. It is based on the catalyzed oxidation of manganese(Ⅱ) by ammonium persulfate in the medium of H 2SO 4. The linear range of the determination is 0～5.0 mg/50 mL, the detection limit is 3.56×10~(-8) g/L, and the linear regression equation is ΔA=4.642 8ρ(mg/50 mL)+ 0.010 75, the correlation coefficient is 0.994 8. The method has been applied to the determination of trace copper in copper samples with satisfactory results.

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Available abstract

A new catalytic kinetic spectrophotometric method for the determination of trace copper(Ⅱ) is studied. It is based on the catalyzed oxidation of manganese(Ⅱ) by ammonium persulfate in the medium of H 2SO 4. The linear range of the determination is 0～5.0 mg/50 mL, the detection limit is 3.56×10~(-8) g/L, and the linear regression equation is ΔA=4.642 8ρ(mg/50 mL)+ 0.010 75, the correlation coefficient is 0.994 8. The method has been applied to the determination of trace copper in copper samples with satisfactory results.

Key concepts: Copper, Ammonium persulfate, Spectrophotometry, Detection limit, Chemistry, Catalysis, Persulfate, Linear range

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