Characteristic redox potential-time curve in the iron(II)/nitric acid autocatalytic reaction and its application to a time measurement-determination of folic acid.
A characteristic redox potential-time curve of the iron(II)/nitric acid autocatalytic reaction was applied to a time measurement-determination for sub-microM levels of folic acid. The determination range was 7.5 x 10(-7) - 1.5 x 10(-5) M, the detection limit (3 sigma) was 5.9 x 10(-7) M, and the relative standard deviation was 3.6% (n = 5).
Kato
Jun
J
Department of Biomolecular Functional Engineering, Faculty of Engineering, Ibaraki University, Nkanarusawa, Hitachi, Ibaraki, Japan.
Igarashi
Shukuro
S
D002384:Catalysis; D004566:Electrodes; D005492:Folic Acid / Q000032:analysis*; D007501:Iron / Q000737:chemistry*; D015394:Molecular Structure; D017942:Nitric Acid / Q000737:chemistry*; D010084:Oxidation-Reduction; D012680:Sensitivity and Specificity; D013997:Time Factors
D017942:Nitric Acid; D005492:Folic Acid; D007501:Iron