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- W1972371934 abstract "The present paper describes a simple, selective and sensitive kinetic method for the determination of trace amounts of molybdenum(VI) based on its inhibitory effect on the reaction oxidation of 4-hydroxycoumarine by KMnO(4) in the presence of hydrochloric acid, at pH 1.75 at 25 degrees C. The rate of the indicator reaction was followed spectrophotometrically by measuring the decrease in the absorbance of KMnO(4) at 525 nm. The development method includes optimization of the reagent concentration and temperature. The calibration graph was linear in the range of concentrations from 20 to 200 ng/cm(3) of molybdenum(VI). The probable relative error was in the interval 3.10 - 10.52% for the concentration range of 200 - 20 ng/cm(3) molybdenum(VI), respectively. The interference effects of the foreign ions were determined to assess the selectivity of the method. The developed method was found to have relatively good selectivity, sensitivity, simplicity and rapidity. The proposed method was applied to the determination of molybdenum(VI) in a particular type of steel and alloy (hastelloy)." @default.
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- W1972371934 date "2006-05-01" @default.
- W1972371934 modified "2023-09-25" @default.
- W1972371934 title "Kinetic Spectrophotometric Determination of Traces of Molybdenum(VI) by Its Inhibitory Effect on the Oxidation of 4-Hydroxycoumarine by Potassium Permanganate" @default.
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- W1972371934 doi "https://doi.org/10.2116/analsci.22.793" @default.
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