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1998•Chinese Journal of Spectroscopy LaboratoryRequires access

Colour Reaction of a New Reagent PIF With Iron (III) and Its Analytical Application

Huang Zongwen, Zhong Ming-hua

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Abstract

In this paper a new method for the spectrophotometric determination of iron(Ⅲ) with piperonal fluorone(PIF) has been developed.In the presence of cetyl pyridine bromide(CPB),iron(Ⅲ) reacts with PIF to form a stable blue complex with an absorption peak at 635nm.The molar ratio of Fe(Ⅲ)/PIF in the complex is estimated to 1∶2.The calibration graph is linear over the concentration range 0.00-0.24μg of iron(Ⅲ) in 1mL.The apparent molar absorptivity is 1.26×10 5L·mol -1 ·cm -1 .It has been applied to the determination of microamount iron in some agents with satisfactory results.

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What this paper is about

In this paper a new method for the spectrophotometric determination of iron(Ⅲ) with piperonal fluorone(PIF) has been developed.In the presence of cetyl pyridine bromide(CPB),iron(Ⅲ) reacts with PIF to form a stable blue complex with an absorption peak at 635nm.The molar ratio of Fe(Ⅲ)/PIF in the complex is estimated to 1∶2.The calibration graph is linear over the concentration range 0.00-0.24μg of iron(Ⅲ) in 1mL.The apparent molar absorptivity is 1.26×10 5L·mol -1 ·cm -1 .It has been applied to the determination of microamount iron in some agents with satisfactory results.

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Available abstract

In this paper a new method for the spectrophotometric determination of iron(Ⅲ) with piperonal fluorone(PIF) has been developed.In the presence of cetyl pyridine bromide(CPB),iron(Ⅲ) reacts with PIF to form a stable blue complex with an absorption peak at 635nm.The molar ratio of Fe(Ⅲ)/PIF in the complex is estimated to 1∶2.The calibration graph is linear over the concentration range 0.00-0.24μg of iron(Ⅲ) in 1mL.The apparent molar absorptivity is 1.26×10 5L·mol -1 ·cm -1 .It has been applied to the determination of microamount iron in some agents with satisfactory results.

Key concepts: Molar absorptivity, Reagent, Calibration curve, Chemistry, Color reaction, Molar ratio, Pyridine, Nuclear chemistry

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Colour Reaction of a New Reagent PIF With Iron (III) and Its Analytical Application — Research Paper | ScholarLens