期刊
ELECTROANALYSIS
卷 32, 期 10, 页码 2174-2182出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.202060008
关键词
Tartrazine; Sunset yellow; Thiomersal; Carbon paste; Molybdenum oxide
资金
- UNIBAGUE
- UNMSM [16-416-INT, 18-450, C20071301]
- Universidad de los Andes from the Faculty of Sciences [INV-2018-50-1354, INV-2017-65-1683]
This report allowed the detection of three substances using a carbon paste decorated with MoO2(MoO/CPE). Tartrazine (TZ), sunset yellow (SY) and thiomersal (TMS) were analyzed for adsorptive voltammetry. The electrode was characterized by scanning electron microscopy, energy dispersive spectroscopy and cyclic voltammetry. TZ, SY and TMS were observed at 1.07, 0.80 and 0.95 V respectively. The detection limits (3*sigma/m) for TZ, SY and TMS were 0.04, 0.06 and 0.10 mu mol/L, respectively. The new analytical method was applied using pharmaceutical samples.
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