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2004•Journal of Nanchang UniversityRequires access

DETERMINATION OF TRACEIRON(III) BY CATALYTIC KINETICS SPETROPHOTOMETRY

Xie Yan-zhao

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Abstract

A catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been established .It is based on the catalytic effect of iron(Ⅲ) on the oxidation of xylene cyanol FF by Hydrogen peroxide and potassium periodate in nitric acid medium. The optimum conditions were studied. The limit of detection is 2.0×10-10g iron(Ⅲ)?mL~(-1).Iron(Ⅲ) can be determined accurately in the range of 0.0 ～0.2μg? 25ml-1.The method has been applied for the determination of trace iron(Ⅲ) in environmental water with satisfactory results.

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What this paper is about

A catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been established .It is based on the catalytic effect of iron(Ⅲ) on the oxidation of xylene cyanol FF by Hydrogen peroxide and potassium periodate in nitric acid medium. The optimum conditions were studied. The limit of detection is 2.0×10-10g iron(Ⅲ)?mL~(-1).Iron(Ⅲ) can be determined accurately in the range of 0.0 ～0.2μg? 25ml-1.The method has been applied for the determination of trace iron(Ⅲ) in environmental water with satisfactory results.

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Available abstract

A catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been established .It is based on the catalytic effect of iron(Ⅲ) on the oxidation of xylene cyanol FF by Hydrogen peroxide and potassium periodate in nitric acid medium. The optimum conditions were studied. The limit of detection is 2.0×10-10g iron(Ⅲ)?mL~(-1).Iron(Ⅲ) can be determined accurately in the range of 0.0 ～0.2μg? 25ml-1.The method has been applied for the determination of trace iron(Ⅲ) in environmental water with satisfactory results.

Key concepts: Potassium periodate, Hydrogen peroxide, Catalysis, Chemistry, Nitric acid, Detection limit, Kinetics, Inorganic chemistry

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