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Revista de Chimie (Rev. Chim.), Year 2008, Volume 59, Issue 7,

https://doi.org/10.37358/RC.08.7.1895

S. S. Mitic, V. V. Zivanovic, G. Z. Miletic, D. A. Kostic, I. D. Rasic

Kinetic Method for the Determination of 2,4-Dinitrophenol

Abstract:

A kinetic method for the determination of dinitrophenol is proposed. The method is based on the inhibiting effect of 2,4-dinitrophenol on the Mn(II) catalysis of the oxidation of malachite green with potassium periodate. The reaction was monitored spectrophotometrically at 615 nm. Kinetic expressions for the reaction are postulated. The optimal experimental conditions for the determination of 2,4-dinitrophenol were established and 2,4-dinitrophenol was determined in concentrations from 0.092-0.92 mg . mL-1 with relative standard error of 5.9 %. Detection limit is 0.014 mg . mL-1. The selectivity of the method is appropriate. The method was applied for the determination of dinitrophenol in urine and river water.

Keywords:
2;4-dinitrophenol; kinetic determination; malachite green oxidation; potassium periodate

Issue: 2008, Volume 59, Issue 7
Pages:
Publication date: 2008/8/9
https://doi.org/10.37358/RC.08.7.1895
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