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2005•Journal of Gansu Education CollegeRequires access

Catalytic Spectrophotometric Determination of Trace Platinum and Rhodium with Periodate-dibromo-nitro-chlorophsphonazo System

Bin Wang

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Abstract

A Spectrophotometric method has been deveioped for the determination of Trace Platinum and Rhodium,based on their catalytic effect on potassium bromate oxidation of periodate-dibromo-nitro-chlorophsphonazo system in H_2SO_4 medium.The optimum conditions of the fading reaction have been determined.The determination limits of Pt and Rh was respectively 0.005μg·mL~(-1) and(0.002)μg·mL~(-1) and the linear range was 0.005~0.050μg·mL~(-1).The content of Pt and Rh in Pt-Rh catalytic can be determined.

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A Spectrophotometric method has been deveioped for the determination of Trace Platinum and Rhodium,based on their catalytic effect on potassium bromate oxidation of periodate-dibromo-nitro-chlorophsphonazo system in H_2SO_4 medium.The optimum conditions of the fading reaction have been determined.The determination limits of Pt and Rh was respectively 0.005μg·mL~(-1) and(0.002)μg·mL~(-1) and the linear range was 0.005~0.050μg·mL~(-1).The content of Pt and Rh in Pt-Rh catalytic can be determined.

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Available abstract

A Spectrophotometric method has been deveioped for the determination of Trace Platinum and Rhodium,based on their catalytic effect on potassium bromate oxidation of periodate-dibromo-nitro-chlorophsphonazo system in H_2SO_4 medium.The optimum conditions of the fading reaction have been determined.The determination limits of Pt and Rh was respectively 0.005μg·mL~(-1) and(0.002)μg·mL~(-1) and the linear range was 0.005~0.050μg·mL~(-1).The content of Pt and Rh in Pt-Rh catalytic can be determined.

Key concepts: Potassium bromate, Potassium periodate, Rhodium, Periodate, Platinum, Catalysis, Chemistry, Nitro

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