Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 31, Issue 10, Pages 2949-2954Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2010.31.10.2949
Keywords
Carbon paste electrode; Ionic liquid; SBA-15; Heavy metal ion
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Funding
- National Natural Science Foundation of China [5083 0303]
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) [IRT0853]
- Research Achievements Foundation of Xi'an University of Architecture and Technology [ZC1004]
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Ionic liquid-functionalized ordered mesoporous silica SBA-15 modified carbon paste electrode (CISPE) was fabricated and its electrochemical performance was investigated by cyclic voltammetry, electrochemical impedance spectra. The electrochemical behavior of Cd2+ Pb2+, Cu2+ and Hg2+ at CISPE was studied by differential pulse anodic stripping voltammetry (DPASV). Compared with carbon paste electrode, the stripping peak currents had a significant increase at CISPE. Under the optimized conditions, the detection limits were 8.0 x 10(-8) M (Cd2+), 4.0 x 10(-8) M (Pb2+), 6.0 x 10(-8) M (Cu2+), 1.0 x 10(-8) M (Hg2+), respectively. Furthermore, the present method was applied to the determination of Cd2+, Pb2 +, Cu2+ and Hg2+ in water samples and people hair sample.
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