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Voltammetric Determination of Allura Red AC onto Carbone‐paste Electrode Modified by Silica with Embedded Cetylpyridinium Chloride
Author(s) -
Pliuta Konstantin,
Chebotarev Alexander,
Pliuta Anastasia,
Snigur Denys
Publication year - 2021
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.202060367
Subject(s) - cetylpyridinium chloride , electrode , calibration curve , analytical chemistry (journal) , horizontal scan rate , chloride , chemistry , materials science , carbon paste electrode , chromatography , detection limit , cyclic voltammetry , electrochemistry , metallurgy , pulmonary surfactant , biochemistry
In current study the carbon‐paste electrode modified by silica with embedded cetylpyridinium chloride for determination of Allura Red AC have been developed. The optimal conditions were determined to be for the square‐wave voltammetric quantification: pH=2, E ads =300 mV, t ads =300 s, amplitude – 40 mV, frequency – 25 Hz and potential scan rate is 250 mV sec −1 . The calibration plot has linearity in the concentration ranges 0.04–0.2 μM and 0.2–1.00 μM. The LOD and LOQ are equal to 0.005 μM and 0.015 μM respectively. The crafted sensor has been applied successfully to model solutions and in jelly candies analysis with RSD no more than 10 %.