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Determination of Cadmium (II) Ions in Environmental Samples : A Potentiometric Sensor

Mohammad Karimi1*, Forouzan Aboufazeli1, Hamid Reza Lotfi Zadeh Zhad1, Omid Sadeghi1and Ezzatollah Najafi1

1Department of Chemistry, Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

DOI:http://dx.doi.org/10.12944/CWE.7.2.02

A sensor electrode was modified by multi-walled carbon nanotubes functionalized by dithizone. The electrode was used for determination of trace amounts of cadmium (II) ions. The electrode composition was 67% graphite powder, paraffin 23%, 10% modified MWCNTs (W/W). The linear range for lead (II) was 1.8×10-7to 1.0×10-4mol L−1and the limit of detection was obtained1.0×10−7mol L−1. The lifetime of the electrode was 12 weeks and a fast response time was observed. The electrode was used for determination of trace amounts of Cd(II) ions in standard reference materials of water and soil.

Sensor; Cadmium; Modified MWCNTs; Potentiometry; Dithizone

Copy the following to cite this article:

Karimi M, Aboufazeli F, Zhad H.R.L.Z, Sadeghi O, Najafi E. Determination of Cadmium (II) Ions in Environmental Samples : A Potentiometric Sensor. Curr World Environ 2012;7(2):201-206 DOI:http://dx.doi.org/10.12944/CWE.7.2.02

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Karimi M, Aboufazeli F, Zhad H.R.L.Z, Sadeghi O, Najafi E. Determination of Cadmium (II) Ions in Environmental Samples : A Potentiometric Sensor. Curr World Environ 2012;7(2):201-206. Available from://www.a-i-l-s-a.com/?p=2739

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