期刊
ELECTROANALYSIS
卷 21, 期 8, 页码 944-952出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.200804492
关键词
Carbon nanotube; Hydroxyapatite; Nanocomposite; Cadmium; Stripping analysis
资金
- Chinese Academy of Sciences [KZCX2-YW-410]
- National Natural Science Foundation of China [40776058]
- National 863 High Technology Project of the Ministry of Science and Technology of China [2007AA09Z103]
- Department of Science and Technology of Shandong Province [2006GG2205033]
- Outstanding Youth Natural Science Foundation of Shandong Province [JQ200814]
A novel chemically modified electrode for stripping determination of cadmium is presented in this paper. based on carbon nanotube-hydroxyapatite (CNT-HAP) nanocomposite, which can be prepared by an easy and effective one-step sonication. The newly synthesized nanocomposite was characterized with FTIR, TEM, and electrochemical methods. Due to the combination of the strong absorption ability of HAP and excellent electroanalytical properties of CNTs, the GC/CNT-HAP electrode has been successfully used for determination of Cd2+ by anodic stripping voltammetry with a linear range of 20 nM -3 mu M. The sensitivity and detection limit are 25.6 mu A/mu M and 4 nM, respectively. The practical application of the proposed electrode has been carried out for the determination of trace levels of Cd2+ in real water samples.
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