Journal: Inter. J. of Chemical and Analytical Science

Article Id: JPRS-AC-00001161
Title: Simultaneous determination of copper and cadmium as Cu(DDTC)2 Spectrophotometrically after fractional extraction
Category: Analytical Chemistry
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    Copper(II) and cadmium(II) forms M(DDTC)2 complexes (M=Cu, Cd) with diethyldithiocarbamate (DDTC) that is extracted in CHCl3/CCl4. Yellow Cu(DDTC)2 shows maximum absorbance at 435 nm whereas Cd(DDTC)2 has no absorption. Extract was divided into two fractions. Absorption of one fraction is directly measured which is equivalent to Cu(II) present in sample. Addition of excess copper(II) to the second fraction of the extract displaces cadmium quantitatively forming additional Cu(DDTC)2 as its stability is higher than Cd(DDTC)2. The absorbance of second extract is measured subsequently when additional absorbance is equivalent to cadmium. Linear calibration range was obtained 0.05–17 µg mL-1 for cadmium and 0.02–12 µg mL-1 for copper with the regression coefficient (r2) 0.998 for each. In the presence of EDTA as masking agent very good selectivity was achieved.

    Cite this article as:Mohammad Nasir Uddin, Md. Muzahidul Islam, Nur Mostaq Shah,Simultaneous determination of copper and cadmium as Cu(DDTC)2 Spectrophotometrically after fractional extraction , International Journal of Chemical and Analytical Science 2014,5(1),43-49.

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    Author(s) Name:

    Mohammad Nasir Uddin*, Md. Muzahidul Islam, Nur Mostaq Shah

    Affiliation(s) Name:

    Department of Chemistry, University of Chittagong, Chittagong-4331, Bangladesh

    *Corresponding author.
    Mohammad Nasir Uddin
    Department of Chemistry,
    University of Chittagong,
    Chittagong-4331, Bangladesh

    Received on: 24-11-2013; Revised on: 29-12-2013; Accepted on:30-12-2013

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    Author:

    Mohammad Nasir Uddin*, Md. Muzahidul Islam, Nur Mostaq Shah

    Title:Simultaneous determination of copper and cadmium as Cu(DDTC)2 Spectrophotometrically after fractional extraction
    Journal:Inter. J. of Chemical and Analytical Science
    Vol(issue):6(1)
    Year:2015
    Page No: (43-49)
  • Experimental Methods Keywords

    Methodology:Spectrophotometrically
    Research Materials:Environmental Water and Soil Samples, Biological, Fertilizer and Food Samples

Keywords

Diethyldithiocarbamate Copper(II) Cadmium(II) Environmental Water and Soil Samples Biological Fertilizer and Food Samples

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