Journal: Inter. J. of Chemical and Analytical Science

Article Id: JPRS-AC-00001158
Title: The polarographic study of Cobalt(II)-dithiocarbamate complexes at DME
Category: Analytical Chemistry
Section: Research Article
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    Cobalt is a naturally occurring element in the earth’s crust. It is a very small part of our environment and very small amounts are needed for many animals and humans to stay healthy. Cobalt poisoning can occur when exposed to large amounts of cobalt. The aim of this study was to develop a facile, rapid, robust, sensitive and selective methodology for the determination of cobalt(II). Two new ligands, ammonium 2,6-dimethyl morpholine dithiocarbamate (ADMM-DTC) and ammonium 3-methyl piperdine dithiocarbamate (AMP-DTC) were synthesized in the laboratory. The method was based on chelation of cobalt(II) with ADMM-DTC/AMP-DTC in presence of NH4OH at pH 7.2 and 8.2 to produce catalytic hydrogen currents at -1.28 V and -1.38 V vs SCE respectively and prior detected by D.C polarography. Optimized polarogaphic conditions were established by studying effect of pH, supporting electrolyte (NH4Cl), ligand & metal ion concentrations and effect of adverse ions on peak height to improve the sensitivity, selectivity and detection limits of the present method. This technique is successfully applied for the analysis of cobalt(II) in different matrices with recoveries ranging from 93- 98 % and the results obtained were comparable with the differential pulse polarography (DPP).

    Cite this article as:C. Giridhar, S. Kanchi, T. Niranjan, N. Venkatasubba Naidu,The polarographic study of Cobalt(II)-dithiocarbamate complexes at DME,International Journal of Chemical and Analytical Science 2014,5(1),24-32.

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    Author(s) Name:

    C. Giridhar1, S. Kanchi2, T. Niranjan1, N. Venkatasubba Naidu1*

    Affiliation(s) Name:

    *1Department of Chemistry, Sri Venkateswara University, Tirupathi-517502, Andhra Pradesh., India
    2 Department of Chemistry, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa

    *Corresponding author.
    N. Venkatasubba Naidu,
    Department of Chemistry,
    Sri Venkateswara University,
    Tirupathi-517502,
    Andhra Pradesh., India


    Received on: 26-11-2013; Revised on: 29-12-2013; Accepted on:06-01-2014

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    Author:

    C. Giridhar1, S. Kanchi2, T. Niranjan1, N. Venkatasubba Naidu1*

    Title:The polarographic study of Cobalt(II)-dithiocarbamate complexes at DME
    Journal:Inter. J. of Chemical and Analytical Science
    Vol(issue):5 (January)
    Year:2014
    Page No: (24-32)
  • Experimental Methods Keywords

    Methodology:Catalytic hydrogen current (CHC) technique . Cobalt(II) . Ammonium 2,6-dimethyl Morpholine dithiocarbamate (ADMM-DTC) . Ammonium 3-methyl Piperidine dithiocarbamate (AMP-DTC). Differential pulse pola
    Research Materials:D.C Polarography

Keywords

D.C Polarography . Catalytic hydrogen current (CHC) technique . Cobalt(II) . Ammonium 2 6-dimethyl Morpholine dithiocarbamate (ADMM-DTC) . Ammonium 3-methyl Piperidine dithiocarbamate (AMP-DTC). Diff

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