Spectrophotometric Determination of Chemical Speciation of Complexes of L-Dopa with Co(II), Ni(II) and Cu(II).

Research Journal of Pharmaceutical, Biological and Chemical Sciences

article

S Raju¹  G Nageswara Rao.² 

[1] Department of Chemistry, Govt. Degree College;School of Chemistry, Andhra University

关键词: Cobalt(II);    Nickel(II);    Copper(II);    Spectrophotometry;    Stability constants;    Toxicity.;   

DOI  :  10.33887/rjpbcs/2021.12.2.12

学科分类：工程和技术（综合）

来源: Research Journal of Pharmaceutical, Biological and Chemical Sciences

【 摘 要 】

Chemical speciation of complexes of Co(II), Ni(II) and Cu(II) with L-Dopa (dopa) has been studiedspectrophotometrically. The complexations were carried out at different pH ranges at the wavelengths ofrespective complexes. The stoichiometries of the complexes were determined using Job’s continuous variationmethod and the value was found to be 1:2 metals to ligand ratio. Stability constant values were calculatedusing the continuous variation method. The complexes were found to be stable over the pH range used asthere was slight change in the color intensity and absorbance values.

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