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Nanocrystalline Metallosilicate Modified Electrodes for the Simultaneous, Sensitive, and Selective Determination of Riboflavin, Rutin, and Pyridoxine
Author(s) -
Kaur Balwinder,
Srivastava Rajendra
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400064
Subject(s) - rutin , riboflavin , pyridoxine , nanocrystalline material , chemistry , detection limit , chromatography , linear range , electrode , materials science , organic chemistry , biochemistry , antioxidant , crystallography
Nanocrystalline metallosilicate modified glassy carbon electrodes were fabricated for the simultaneous determination of vitamins. Among these, nanocrystalline zirconosilicate exhibited the highest activity with a linear range from 30 nM–500 µM for riboflavin and 120 nM–600 µM for rutin and pyridoxine. Sensitivity values of 2.8, 1.49, and 1.13 µA/µM cm 2 and lower detection limits of 5 nM, 30 nM, and 30 nM for riboflavin, rutin, and pyridoxine, respectively, were found. The proposed sensor is stable and reproducible ( RSD <3.5 %). The analytical performance of this sensor was demonstrated in the pharmaceutical preparations (multivitamin tablets) with satisfactory recovery (97–103 %).