Please use this identifier to cite or link to this item: http://hdl.handle.net/10321/1039
Title: Polarographic catalytic hydrogen wave technique for the determination of copper(II) in leafy vegetables and biological samples†
Authors: Kanchi, Suvardhan 
Singh, Parvesh 
Sabela, Myalowenkosi Innocent 
Naidu, N. Venkatasubba 
Bisetty, Krishna 
Keywords: Direct Current Catalytic hydrogen wave (DC-CHW) technique;Copper(II);Dithiocarbamates (Ammonum Piperidine dithiocarbamates [Amm Pip-DTC];Ammonum Morpholine dithiocarbamates [Amm Mor-DTC];D.C Polarography(DC);Differential Pulse Polarography (DPP);Leafy vegetables and biological samples
Issue Date: 1-Mar-2013
Publisher: ESG
Source: Kanchi, S., Singh, P., Sabela, M.I., Bisetty, K., Naidu, N.V. 2013. Polarographic Catalytic Hydrogen Wave Technique for the Determination of Copper(II) in Leafy Vegetables and Biological Samples. International Journal of ELECTROCHEMICAL SCIENCE, 8: 4260-4282.
Abstract: An economical, novel, eco-friendly and robust method for the quantification of copper(II) in various leafy vegetables, milk and blood samples has been developed using direct current catalytic hydrogen wave (DC-CHW) technique involving the formation of ammonium salts of piperidine/morpholine dithiocarbamates metal complex. Ammonium piperidine/morpholine dithiocarbamates complexed with copper(II) in the presence of NH4Cl-NH4OH medium at pH 6.5±1 produces CHW’s at -0.35±1 V vs SCE. Consequently, various optimal parameters such as preparation medium, effect of pH, ligand concentration, metal ion concentration and indifferent ions effect on peak height were optimized to enhance the sensitivity and selectivity. The novel aspect in the work address the interaction of ammonium piperidine/morpholine dithiocarbamates with copper(II) were confirmed with cyclic voltammetry (CV) and supported by computational calculations using Density Functional Theory (DFT) methods. Furthermore, the student “t”-test and variance ratio “f”-tests indicated no significant difference between the present method and the differential pulse polarographic (DPP) method.
URI: http://hdl.handle.net/10321/1039
ISSN: 1452-3981
Appears in Collections:Research Publications (Applied Sciences)

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