Modification of Carbon Paste Electrodes using Pyridine Functionalized SBA-15 and Multi-walled Carbon Nanotubes (MWCNTs) for Determination of Lead Ions in Real Aqueous Solutions

Modification of Carbon Paste Electrodes using Pyridine Functionalized SBA-15 and Multi-walled Carbon Nanotubes (MWCNTs) for Determination of Lead Ions in Real Aqueous Solutions

Vahid Amani Hamid Reza Lotfi Zadeh Zhad Amin Ebadi Omid Sadeghi Ezzatollah Najafi Najmeh Tavassoli 

Department of Chemistry, Islamic Azad University Shahr-e-Rey Branch, P. O. Box 18735-334, Tehran, Iran

Department of Chemistry, Islamic Azad University Kazerun Branch, P. O. Box 73135-168, Kazerun, Shiraz, Iran

Corresponding Author Email: 
h2o.group.chem@gmail.com
Page: 
39-42
|
DOI: 
https://doi.org/10.14447/jnmes.v14i1.128
Received: 
October 08, 2010
|
Accepted: 
January 26, 2011
|
Published: 
February 15, 2011
| Citation
Abstract: 

For determination of trace amounts of lead(II) ions, a carbon paste electrode was modified with functionalized SBA-15 and Multi-Walled Carbon Nanotubes. The electrode composition was graphite powder 59%, Paraffin 23%, modified SBA-15 14%, MWCNTs 4% (W/W). The linear range for lead(II) was 6.5×10-8 to 2.0×10-3and the limit of detection was obtained 5.5×10-8 mol L-1. The lifetime of the electrode was 4 months and a fast response time was observed. The electrode was used for determination of trace amounts of lead in real samples.

Keywords: 

Carbon paste electrode; Lead; Modified SBA-15; MWCNTs; Potentiometry 

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
  References

[1] S. Audrey, L. Takser, M. André, S. Martin, M. Donna, St.A. Geneviève, B. Philippe, H. Georgette, H. Guy, Sci. Total Environ., 290, 157 (2002).  

[2] J. Xu, L.j. Lian, C. Wu, X.f. Wang, W.y. Fu, L.h. Xu, Food Chem. Toxicol., 46, 1488, (2008).

[3] W. Zhou, Y. Chai, R. Yuan, J. Guo, X. Wu, Analytica Chimica Acta, 647, 210 (2009).

[4] H. Abbastabar-Ahangar, A. Shirzadmehr, K. Marjani, H. Khoshsafar M. Chaloosi, L, Mohammadi, J. Inclusion Phenom.Macrocyclic Chem., 63, 287 (2009).

[5] M. Javanbakht , H. Khoshsafar , M.R. Ganjali , P. Norouzi , M. Adib, Electroanalysis, 21, 1605 (2009).

[6] Sh. Inagaki, Sh. Guan, Y. Fukushima, T. Ohsuna, O. Terasaki, J. Am. Chem. Soc., 121 , 9611 (1999).

[7] M.R. Ganjali, N. Motakef-Kazaml, F. Faridbod, S. Khoee, P. Norouzi, Journal of Hazardous Materials, 173, 415 (2010).

[8] T.P.B. Nguyen, J.W. Lee, W.G. Shim, H. Moon, Micro Meso Mater, 110; 560 (2008).

[9] V.K. Gupta, A.K. Singh, B. Gupta, Anal. Chim. Acta, 575, 198 (2006)

[10]P.R. Buck, E. Lindner, Recommendations for nomenclature of ion selective electrodes (IUPAC Recommendations 1994), Pure Appl. Chem. 66, 2527 (1994).

[11] IUPAC Analytical Chemistry Division, Commission on Analytical Nomenclature, Recommendations for nomenclature of ion-selective electrodes, Pure Appl. Chem. 48, 127 (1976).