Simultaneous Voltammetric Determination of Cd 2+ and Pb 2+ in Gasoline Samples Employing a Chemically Modified Acrylonitrile‐Butadiene‐Styrene (ABS) Composite Electrode
Electroanalysis(2021)
摘要
A composite electrode based on acrylonitrile-butadiene-styrene and graphite chemically modified with a bismuth film (AGCE-BiF) was applied for the simultaneous determination of Cd2+ and Pb2+ in gasoline samples. Extraction induced by microemulsion breaking (EIMB) was used for the first time in the preparation of the samples for electroanalysis. AGCE-BiF was characterized by SEM, AFM, CV, and SWASV. The sensor showed an increase in sensitivity via in situ modification with bismuth film. The LOD was 4 mu g L-1 for Cd2+ and 2 mu g L-1 for Pb2+. The results showed satisfactory recoveries and precision, being statistically compatible to those obtained with FAAS.
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关键词
ABS, composite electrode, graphite, gasoline, metals
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