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2001•Chinese Journal of Spectroscopy LaboratoryRequires access

Catalytic Spectrophotometric Determination of Trace Iron

Yu Wei, Wang Xiao

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Abstract

A kinetic spectrophotometric method for determination of trace iron(Ⅲ) was established.It was based on the discoloring reaction of hydrogen peroxide(H\-2O\-2) with reduced methylene blue catalyzed by Fe(Ⅲ) in the presence of HAc\|NaAc solution with phen as an activation.The limit of detection is 4.6×10 -9 g/mL.The linear range of determination in the range of is 0_0.6μg/25mL.The optimum reaction conditions and the kinetic parameters were determined.The method has been applied to the determination of iron in water samples with satisfactory results.

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What this paper is about

A kinetic spectrophotometric method for determination of trace iron(Ⅲ) was established.It was based on the discoloring reaction of hydrogen peroxide(H\-2O\-2) with reduced methylene blue catalyzed by Fe(Ⅲ) in the presence of HAc\|NaAc solution with phen as an activation.The limit of detection is 4.6×10 -9 g/mL.The linear range of determination in the range of is 0_0.6μg/25mL.The optimum reaction conditions and the kinetic parameters were determined.The method has been applied to the determination of iron in water samples with satisfactory results.

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Available abstract

A kinetic spectrophotometric method for determination of trace iron(Ⅲ) was established.It was based on the discoloring reaction of hydrogen peroxide(H\-2O\-2) with reduced methylene blue catalyzed by Fe(Ⅲ) in the presence of HAc\|NaAc solution with phen as an activation.The limit of detection is 4.6×10 -9 g/mL.The linear range of determination in the range of is 0_0.6μg/25mL.The optimum reaction conditions and the kinetic parameters were determined.The method has been applied to the determination of iron in water samples with satisfactory results.

Key concepts: Detection limit, Hydrogen peroxide, Methylene blue, Chemistry, Linear range, Catalysis, Spectrophotometry, Kinetic energy

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