Detection of vitamin b1 (thiamine) using modified carbon paste electrodes with polypyrrole

Vitamin B1 (thiamine) is oxidized in alkaline medium and can be detected by cyclic voltammetry technique using carbon paste electrode (CPE) as a working electrode. polypyrrole-modified CPE were used in this study to increase sensitivity and selectivity measurement of thiamine. Molecularly imprinted...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2017-03, Vol.58 (1)
Main Authors: Muppariqoh, N M, Wahyuni, W T, Putra, B R
Format: Article
Language:English
Subjects:
Carbon
Electrodes
Imprinted polymers
Polymers
Polypyrroles
Potassium chloride
Quantitation
Selectivity
Thiamine
Vitamin B
Vitamin B1
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Summary:Vitamin B1 (thiamine) is oxidized in alkaline medium and can be detected by cyclic voltammetry technique using carbon paste electrode (CPE) as a working electrode. polypyrrole-modified CPE were used in this study to increase sensitivity and selectivity measurement of thiamine. Molecularly imprinted polymers (MIP) of the modified CPE was prepared through electrodeposition of pyrrole. Measurement of thiamine performed in KCl 0.05 M (pH 10, tris buffer) using CPE and the modified CPE gave an optimum condition anodic current of thiamine at 0.3 V, potential range (-1.6_1 V), and scan rate of 100 mV/s. Measurement of thiamine using polypyrrole modified CPE (CPE-MIPpy) showed better result than CPE itself with detection limit of 6.9×10-5 M and quantitation limit 2.1×10-4 M. CPE-MIPpy is selective to vita min B1. In conclusion, CPE-MIPpy as a working electrode showed better performance of thiamine measurement than that of CPE.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/58/1/012050