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Bismuth Film Electrodes for Adsorptive Stripping Voltammetric Determination of Sunset Yellow FCF in Soft Drinks
Author(s) -
Królicka Agnieszka,
Bobrowski Andrzej,
Zarębski Jerzy,
Tesarowicz Iwona
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.201300497
Subject(s) - bismuth , calibration curve , adsorptive stripping voltammetry , analytical chemistry (journal) , stripping (fiber) , plating (geology) , detection limit , chemistry , electrode , linear range , materials science , voltammetry , electrochemistry , chromatography , organic chemistry , composite material , geophysics , geology
The bismuth film electrode was used to record well‐developed voltammograms of azo food coloring Sunset Yellow FCF (SY). The employed Bi(III)/HClO 4 plating solutions produced very adhesive and mechanically stable films that were applied in both stationary and flow conditions. The influence of the dimensions of the glassy carbon support, plating solution concentration and potential was discussed. The sensitivity of SWV was sufficient to obtain a linear calibration curve for low concentration levels of SY (below 0.1 mg/L; LOD =1 µg/L, linear range 4.4–87 µg/L). The measurements in a flow system were considered as a tool for the determination of relatively high concentrations (>1 mg/L; LOD =300 µg/L, linear range 300–8800 µg/L) of SY.