Preparation of electrochemically treated nanoporous pencil-graphite electrodes for the simultaneous determination of Pb and Cd in water samples.
作者： Koray B Dönmez , Ebru Çetinkaya , Seda Deveci , Sevinç Karadağ , Yücel Şahin
DOI: 10.1007/S00216-017-0426-3
关键词:
摘要: A simple and rapid analytical method of determining Pb2+ Cd2+ in water samples using an electrochemically pretreated pencil-graphite electrode (EP-PGE) is proposed for the first time literature. An was prepared by performing potential cycling between −0.3 V 2.0 V 0.1 mol L−1 H3PO4 solution to improve its ability sense ions. Square-wave anodic stripping voltammetry (SWASV) used as electroanalytical method. The parameters that influence determination were optimized based on experimental results. magnitude peak oxidation current adjusted order optimize value each parameter. Applying resulting disposable under conditions led good selectivity sensitivity Interference from coexisting ions also investigated. sensor successfully tested applying it a standard reference sample. Under conditions, limits detection 0.46 μg L−1 1.11 μg L−1 electrode. Relative deviations (%RSD) 2.76 2.85 Cd2+. linear working ranges ion 5–45 μg L−1 10–40 μg L−1, respectively.
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