Voltammetric determination of copper in water samples using a Schiff base/carbon nanotube-modified carbon paste electrode

V. Izadkhah; A. Farmany; S.S. Mortazavi

Journal of Industrial and Engineering Chemistry, Vol.21, 994-996, January, 2015

DOI10.1016/j.jiec.2014.05.007 Export Citation

Voltammetric determination of copper in water samples using a Schiff base/carbon nanotube-modified carbon paste electrode

V. Izadkhah^†, A. Farmany, and S.S. Mortazavi¹

Department of Chemistry, Hamedan Branch, Islamic Azad University, Hamedan, Iran
¹Young Researchers & Elite Club, Hamedan Branch, Islamic Azad University, Hamedan, Iran

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In the present study, a novel Schiff base modified multiwalled carbon nanotube paste sensor was developed for the determination of trace amounts of copper in environmental samples. It is based on the encapsulation of the C24H30N6 Schiff base onto multiwalled carbon nanotube paste electrode. The operating conditions regarding supporting electrolytes, deposition time and applied potential on the sensitivity of electrode were established and optimized in detail. The working curve was linear in the concentration range of 0.09-340 μg L-1. The relative standard deviation for 3 replicate determination of the 30 μg L-1 Cu(II) was 1.47%. The detection limit and quantification limit were 0.01 and 0.06 μg L-1, respectively. The sensor was successfully applied to the determination of copper in the river and city water.

Keywords:Cu(II);Stripping voltammetry;Schiff base;River and city water;Multiwalled carbon nanotube

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[1] Brewer GJ, Biol. Med., 223, 39 (2000)

[2] Walsh WJ, Isaacson HR, Rehman F, Physiol. Behav., 62, 327 (1997)

[3] Goudarziafshar H, Nikoorazm M, Mortazavi SS, Abbasi S, Farmany A, Environ. Monit. Assess., 185, 8823 (2013)

[4] Wang J, Lu SB, Hocevar PAM, Farias B, Anal. Chem., 72, 3218 (2000)

[5] Honeychurch KCDM, Hawkins JP, Hart DC, Talanta, 57, 565 (2002)

[6] Legeai S, Soropogui K, Cretinon M, Vittori O, Oliveria AHD, Barbier F, Anal. Bioanal. Chem., 383, 839 (2005)

[7] Sobhanardakani S, Farmany A, Abbasi S, J. Ind. Eng. Chem., http://dx.doi.org/10.1016/j.jiec.2013.12.001. (2014)

[8] Kang X, Mai Z, Zou X, Cai P, Mo J, Anal. Biochem., 363, 143 (2007)

[9] Choong CL, Milne WI, Teo KBK, Int. J. Mater. Form., 1, 117 (2008)

[10] Jiang F, Wang S, Lin J, Jin H, Zhang L, Huang S, Wang J, Electrochem. Commun., 13, 363 (2011)

[11] Soleimani M, Ghahraman M, Int. J. Electrochem. Sci., 8, 8719 (2013)

[12] Crespo GA, Macho S, Bobacka J, Rius FX, Anal. Chem., 81, 676 (2009)

[13] Afkhami A, Bagheri H, Khoshsafar H, Saber-Tehrani M, Tabatabaee M, Shirzadmehr A, Anal. Chim. Acta, 746, 98 (2012)

[14] Senthilkumar S, Saraswathi R, J. Appl. Electrochem., 41(8), 909 (2011)

[15] Morton J, Havens N, Mugweru A, Wanekaya AK, Electroanalysis, 21, 1597 (2009)

[16] Janegitz BC, Marcolino-Junior LH, Campana-Filho SP, Faria RC, Fatibello-Filho O, Sens. Actuators B-Chem., 142(1), 260 (2009)