A novel green spectrophotometric method for the analysis of Cadmium using Benzohydrazide chelating agent

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Research Paper 01/03/2020
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A novel green spectrophotometric method for the analysis of Cadmium using Benzohydrazide chelating agent

Muhammad Kashif Channa, Ghulam Abbas Shar, Gul Afshan Soomro, Muhammad Bachal Korai
J. Bio. Env. Sci.16( 3), 56-64, March 2020.
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Various methods are present for the analysis at trace level of Cadmium (Cd) metal ions. Most of the methods are time taking, tedious, toxic and sophisticated. Recently some less sensitive and less selective spectrophotometric methods were developed for the determination of Cd (II) ions. We have developed a convenient, rapid, selective and sensitive method for the investigation of Cd (II) at trace level using Benzohydrazide (BH) as chelating agent in surfactant 3.0% Triton X-100 micellar media. Proposed method showed enhancement in the analytical characteristics. The maximum absorbance of complex Cd-BH was measured at  instead of it max 323.9nm at pH 7. The Lambert Beer’s law was obeyed over the range of 0.1-5.0 μgmL-1 and 1:2 ligand to metal ratio was obtained for complex. The Sandell’s sensitivity and molar absorptivity were found to be as 6.2ngcm-2 and ε 3.05×104 L mol-1cm-1 respectively. Detection limit was found as 6.2ng/mL. The proposed technique was effectively employed for the estimation of Cd (II) ions from various biological, natural, alloys, environmental and industrial samples.


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