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Catalytic spectrophotometric determination of trace iron(III) with chlorophosphonazo-mA-ironII-KIO_4 system

Feng Shang-cai

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Abstract

A new catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been developed.The method is based on the catalytic effect of iron? on the oxidation of chlorophosphonazo-mA with KIO_4 in the medium of H_2SO_4.The detection limit of this method is 5.72×10~(-8)g/L for iron? and Beer's law is obeyed for iron? in the range of 0-0.5 μg/10 mL.RSDs are 1.9%-2.6% and recoveries range from 98% to 102%.The method has been applied to the determination of trace iron in the water with satisfactory results.

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What this paper is about

A new catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been developed.The method is based on the catalytic effect of iron? on the oxidation of chlorophosphonazo-mA with KIO_4 in the medium of H_2SO_4.The detection limit of this method is 5.72×10~(-8)g/L for iron? and Beer's law is obeyed for iron? in the range of 0-0.5 μg/10 mL.RSDs are 1.9%-2.6% and recoveries range from 98% to 102%.The method has been applied to the determination of trace iron in the water with satisfactory results.

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Available abstract

A new catalytic spectrophotometric method for the determination of trace iron(Ⅲ) has been developed.The method is based on the catalytic effect of iron? on the oxidation of chlorophosphonazo-mA with KIO_4 in the medium of H_2SO_4.The detection limit of this method is 5.72×10~(-8)g/L for iron? and Beer's law is obeyed for iron? in the range of 0-0.5 μg/10 mL.RSDs are 1.9%-2.6% and recoveries range from 98% to 102%.The method has been applied to the determination of trace iron in the water with satisfactory results.

Key concepts: Detection limit, Chemistry, Catalysis, Spectrophotometry, Linear range, Trace Amounts, TRACE (psycholinguistics), Nuclear chemistry

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Catalytic spectrophotometric determination of trace iron(III) with chlorophosphonazo-mA-ironII-KIO_4 system — Research Paper | ScholarLens