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Abstract:
A new analytical method, pressurized CEC (pCEC) with amperometric detection (AD) using 1.5 mu m RP nonporous silica packed columns has been developed for the rapid separation and determination of four Sudan dyes in hot chilli. The influence of several experimental parameters on the retention behavior has been investigated. The electrochemical oxidation of Sudans I-IV separated by pCEC can be reliably monitored with a carbon electrode at +0.95 V (vs. Ag/AgCl). Fast and efficient separation of the analytes was achieved within 7 min by pCEC under the optimum conditions with an ACN/water (95:5%) mobile phase containing formic acid (pH 4.3), 5% acetone and 0.002% triethylamine using a separation voltage of 12 W The detection limits for four Sudan dyes ranged from 8.0 x 10(-7) to 1.2 x 10(-6) mol/L. To evaluate the feasibility and reliability of this method, the proposed pCEC-AD method was further demonstrated with hot chilli samples spiked with Sudan dyes.
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ELECTROPHORESIS
ISSN: 0173-0835
Year: 2007
Issue: 11
Volume: 28
Page: 1696-1703
3 . 6 0 9
JCR@2007
3 . 0 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
JCR Journal Grade:1
Cited Count:
WoS CC Cited Count: 34
SCOPUS Cited Count: 30
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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