| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] State Univ Sao Paulo, Inst Chem, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | Electroanalysis; v. 26, n. 12, p. 2783-2788, DEC 2014. |
| Web of Science Citations: | 5 |
| Abstract | |
This paper describes the electrochemical determination of vitamin D-2 (ergocalciferol) and D-3 (cholecalciferol) in mixed organic/water solvent, using a glassy carbon electrode (GCE). The mixing ratio of organic/water solvent has an important influence on the electrocatalytic response of D vitamins on the surface of the glassy carbon electrode. Well-defined peaks for Vitamin D-2 and D-3 were observed in a 40% ethanol/60% water solution with lithium perchlorate as the support electrolyte. This study demonstrated that the glassy carbon electrode is highly sensitive for the determination of vitamin D-2 and D-3, with a limit of detection of 0.13 and 0.118 mu molL(-1), respectively. No significant interference was seen for vitamins A, E and K in the detection of vitamin D. (AU) | |
| FAPESP's process: | 12/18339-1 - Detection of endocrine disruptors testosterone and estradiol in environmental samples utilizing modified electrodes with graphene, the gold nanoparticles and quantum dots. |
| Grantee: | Fernando Henrique Cincotto |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 11/23047-7 - Development of an electrochemical biosensor based on mesoporous silicon containing carbon nanotubes obtained by a sol-gel process. Electrochemical determination of pesticides. |
| Grantee: | Thiago da Cruz Canevari |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |