Citation: Jun Ping Xiao, Qing Xiang Zhou, Hua Hua Bai. Preconcentration of copper with multi-walled carbon nanotubes pretreated by potassium permanganate cartridge for solid phase extraction prior to flame atomic absorption spectrometry[J]. Chinese Chemical Letters, ;2007, 18(6): 714-717. doi: 10.1016/j.cclet.2007.04.024 shu

Preconcentration of copper with multi-walled carbon nanotubes pretreated by potassium permanganate cartridge for solid phase extraction prior to flame atomic absorption spectrometry

a Department of Chemistry, University of Science and Technology Beijing, Beijing 100083, China;
b School of Chemistry and Environmental Sciences, Henan Normal University, Henan Key Laboratory for Environmental pollution Control, Xinxiang 453007, China

Received Date: 12 December 2004

Fund Project: This work was supported by the Youth Science Foundation of Henan Normal University (No. 2004005), the Natural Science Foundation of Henan Province (No. 0511053000), the Personal Innovation Foundation of Universities in Henan Province (No.[2005] 126) and the grants from the Henan Key Laboratory for environmental pollution control.

A procedure for the preconcentration of copper was described in this paper using multi-walled carbon nanotubes (MWCNTs) oxidized by potassium permanganate as the adsorbent for the enrichment of trace copper in water samples.Important parameters, such as the sample pH, the concentration and volume of eluent, sample flow rate and volume, and interference of coexisting ions, were investigated.The obtained results indicated that proposed method possessed an excellent analytical performance.The linear range, the detection limit, and precison (RSD) were 1-100 ng/mL (R²=0.9993), 0.32 ng/mL and 2.88%, respectively.The results showed that copper could be adsorbed quantitatively on the pretreated MWCNTs with potassium permanganate, and proposed method was very useful in the monitoring of copper in the environment.
- Multi-walled carbon nanotubes,
- Solid phase extraction (SPE),
- Flame atomic absorption spectrometry
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