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- W2004753614 abstract "The analytical features of the reaction between N-phenylanthranilic acid (PAA) and potassium periodate in acidic medium are explored with the aim of improving the catalytic kinetic determination of iron in water samples. In the presence of Fe(II, III), PAA is oxidized by potassium periodate in a formic acid medium to form a violet-colored compound. The reaction is followed spectrophotometrically by measuring the increase in the absorbance of the oxidation product at 525 nm. The variables that affected the reaction rate were investigated and the reaction conditions were established. Calibration graphs are linear in the range of concentrations 2 - 500 ng mL(-1). As low as 10(-8) mol L(-1) Fe(II, III) can be easily determined by the fixed time method. The established catalytic method was successfully applied to the determination of iron in tap water and in pharmaceutical samples." @default.
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- W2004753614 date "2008-05-01" @default.
- W2004753614 modified "2023-09-25" @default.
- W2004753614 title "Spectrophotometric Determination of Trace Iron by Using Its Catalytic Effect on the N-Phenylanthranilic Acid-Potassium Periodate Reaction" @default.
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- W2004753614 doi "https://doi.org/10.2116/analsci.24.595" @default.
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