期刊
ANALYST
卷 138, 期 6, 页码 1812-1818出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3an36271j
关键词
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资金
- One Hundred Person Project of the Chinese Academy of Sciences, China
- National Key Scientific Program-Nanoscience and Nanotechnology [2011CB933700]
- National Natural Science Foundation of China [21103198]
- China Postdoctoral Science Foundation [20110490386]
We report the use of nanostructured layered double hydroxides (LDHs) for the highly selective and sensitive detection of Cd2+ using anodic stripping voltammetry (ASV). In particular, the modification of a glassy carbon electrode promotes the sensitivity and selectivity towards Cd2+ in the presence of Pb2+, Hg2+, Cu2+ and Zn2+. The electrochemical characterization and anodic stripping voltammetric performance of Cd2+ were evaluated using cyclic voltammetry (CV) and square wave anodic stripping voltammetry (SWASV) analysis. Operational parameters, including supporting electrolytes, pH value, deposition potential and deposition time were optimized. In addition, the selectivity, interference and stability were also investigated under the optimized conditions. The results showed that the fabricated electrode possessed good selectivity, stability and reproducibility. The proposed electrochemical sensing strategy is thus expected to open new opportunities to broaden the use of ASV in analysis for detecting heavy metal ions in the environment.
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