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has been cited by the following article:

• TITLE: Simultaneous Determination of Cadmium and Lead Using PEDOT/PSS Modified Glassy Carbon Electrode

  AUTHORS: Sukeri Anandhakumar, Jayaraman Mathiyarasu, Kanala Lakshmi Narasimha Phani, Venkataraman Yegnaraman

  KEYWORDS: Stripping Voltammetry, Cadmium, Lead, Conducting Polymer, PEDOT-PSS, Heavy Metals

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.2 No.4, August 31, 2011

  ABSTRACT: In this work, we report the simultaneous determination of cadmium and lead using glassy carbon electrodes (GCE) modified by poly(3,4-ethylenedioxythiophene) (PEDOT) for linear sweep anodic stripping voltammetry (LSASV). The modification allows metal detection without involving oxygen removal, mechanical stirring and introduction of alloying additions such as Hg, Bi, Sb, etc. during the pre-concentration step. Introduction of poly (4-styrenesulphonate) (PSS) as dopant in the PEDOT matrix improves reproducibility, stability and sensitivity in the detection. Both cadmium and lead peaks were readily quantifiable over the linear range of 2 - 10 ?g/ml and the detection limit being 1.47 ?g/ml and 1.15 ?g/ml respectively. The calibration plot shows a linear response with correlation coefficient of 0.9911 and 0.9944 for cadmium and lead respectively. Thus, the GC/PEDOT/PSS modified electrode suggested as a suitable matrix for rapid monitoring of these heavy metals at trace levels.