Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode.

Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode. Research Abstract Details 

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Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode. Abstract Text:

J H ,A S ,M D ,M L Garcia,

A voltamperometric study (DC and DP) on the electroanalytical behaviour of vitamin D(3) in a methanolic solution using LiClO(4) as the supporting electrolyte and working with a glassy carbon electrode was carried out. Vitamin D(3) exhibits an oxidation wave (DC) or peak (DP) at potentials close to +1.1 V (versus SCE). The optimum experimental conditions for the best reproducibility of the voltamperometric signal were determined and the different parameters affecting the electrochemical process were studied. The electrochemical process was seen to be irreversible and, under certain conditions, adsorption of vitamin D(3) onto the electrode surface was observed. A voltamperometric procedure for the determination of vitamin D(3) in a concentration range of 2 x 10(-6)-2 x 10(-4) M is proposed. The detection limit is of the order of 2 x 10(-6) M and the relative standard deviations are 1.1% (DC) and 2.6% (DP), respectively.

Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode. Publishing Authors By Initials

JH ,AS ,MD ,ML Garcia,

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Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of pharmaceutical and biomedical analysis

VOLUME: 6

Page Numbers: 737-41

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ISSN: 0731-7085

DAY: 26

MONTH: 07

YEAR: 1988

Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Voltammetric determination of vitamin D(3) with a rotating glassy carbon electrode.

AFFILIATION: Department of Analytical Chemistry, Nutrition and Bromatology, University of Salamanca, 37008, Salamanca, Spain.

Country: England

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MEDLINETA: J Pharm Biomed Anal

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