Detection and initial rate determination of oxalic acid at the microgram level

Dutt, V. V. S. Eswara; Mottola, Horacio A.

doi:10.1016/0006-2944(74)90047-7

Cited by 17 publications

(2 citation statements)

References 10 publications

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“…About the same time, Bergmeyer and Hagen (JO) reported an enzymatic determination with a set-up including sample injection in a recirculating unsegmented flow system (Figure 4). Somewhat later, and a few months before the paper by Riizicka and Hansen, we also described the use of an unsegmented-flow closed system with sample injection directly into the detection zone (Figure 5) (11). We can even set the clock 10 years earlier and find in a paper by Blaedel and Hicks (12) all the basic elements of determinations employing unsegmented continuous flow (Figure 6).…”

mentioning

confidence: 96%

Continuous flow analyses revisited

Mottola¹

1981

Anal. Chem.

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mentioning

confidence: 96%

Continuous flow analyses revisited

Mottola¹

1981

Anal. Chem.

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“…Abnormal levels of UA in urine are symptoms of some diseases, such as leucocythemia, heavy hepatitis and gout. 3 Therefore, determination of DA and UA has attracted much attention of researchers.…”

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confidence: 99%

Eletropolymerization of Niacinamide for Fabrication of Electrochemical Sensor: Simultaneous Determination of Dopamine, Uric Acid and Ascorbic Acid

Zhu

Lin

2009

Chin. J. Chem.

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Two polymeric thin film modified electrodes, poly-niacinamide/glassy carbon electrode (poly-NA/GCE) and poly-nicotinic acid/glassy carbon electrode (poly-NC/GCE), have be fabricated at glassy carbon electrodes by simple electropolymerization of niacinamide (NA) in different potential scan ranges of cyclic voltammetry (CV). These two electrodes all showed catalytic ability towards the oxidation of dopamine (DA), uric acid (UA) and ascorbic acid (AA) by obvious reductions of overpotentials, giving well-resolved voltammetric peaks, which allow simultaneously determination of DA, UA and AA. The poly-NC/GCE showed even higher electrocatalytic activity than the poly-NA/GCE. The electrochemical behavior of poly-NC/GCE was investigated by CV and differential pulse voltammetry (DPV) for determination of DA, UA and AA. The linear ranges of the concentration for the determination of AA, DA and UA using DPV were 75-3000, 0.37-16 and 0.741-230 µmol•L -1 , respectively. The slopes of the linear calibration curves for the detection were estimated to be 5.6, 1140 and 102 mA•L•mol -1 for AA, DA and UA, respectively. The poly-NC/GCE shows excellent sensitivity, good selectivity and antifouling properties.

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