Vol. 3, Issue 2 (2015)
Spectrophotometric determination of trace Amounts of molybdenum after extraction of its complexes with 2-hydroxythiophenol and its derivatives in the presence of hydrophobic amines into chloroform
Author(s): Abel M Maharramov, Ali Z Zalov, Naila A Verdizadeh, Afet B Hajieva
Abstract: The mixed-ligand complexes (MLC) of molybdenum (VI) with 2-hydroxythiophenol (HTP) and its derivatives (HTPDs) {(2, 5-dihydroxythiophenol (DHTP) and 2-hydroxy-5-chloroÂthioÂphenol (HCTP)} in the presence of hydrophobic amines have been investigated by specÂtroÂphoÂÂtoÂmetÂric method. As hydrophobic amines (HAs) 3, 4-xylidine (o-Xyl), 2, 4-xylidine (m-Xyl), and 2,5-xylidine (p-Xyl) were used. The condition of complexing and extraction, physical-chemical and analytical characteristics of this complex have been found. The obtained mixed-ligand comÂplexes have a composition of 1:2:2 {Mo (V): HTPDs: AA}. Optimal conditions for their liÂquid-liquid extraction were found: organic solvent (chloroform), pH, concentration of the reagents and extraction time. Under the optimal conditions, the complexes have absorption maxima (λmax) at 522-545 nm and molar absorptivities (εmax) between 3.6·104 dm3 mol–1 cm–1 (HCTP+o-Xyl) and 4.7·104 dm3 mol–1 cm–1 (DHTP+o-Xyl). The degrees of extraction were R=98.4-98.9%. The extraction-photometric methods of moÂlybdenum determination have been worked out. The influence of diverse ions on determiÂnaÂtion of molybdenum has been studied. The proposed method was applied successfully to determine amount of molybdenum in steel, samples of soil and pea.
Pages: 88-94 | 1591 Views 127 Downloads
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How to cite this article:
Abel M Maharramov, Ali Z Zalov, Naila A Verdizadeh, Afet B Hajieva. Spectrophotometric determination of trace Amounts of molybdenum after extraction of its complexes with 2-hydroxythiophenol and its derivatives in the presence of hydrophobic amines into chloroform. Int J Chem Stud 2015;3(2):88-94.
