1Department of Chemistry, College of Sciences, University of Al-Qadisiyah, Dewanyia, Iraq
2Department of Pharmaceutical Chemistry, College of Pharmacy, University of Al-Qadisiyah, Dewanyia, Iraq
3Department of Chemistry, College of Education, University of Al-Qadisiyah, Dewanyia, Iraq
A new organic reagent namely 5-(4- isopropoxy-6-(methyl amino)-5- nitrosopyrimidine-2-yl) diazenyl) quinolin-8-ol (IMNDQ) was synthesized, characterized and employed for the estimation of Cadmium (II) afterwards preconcentration using Dispersive liquid- liquid microextraction (DLLME). In this precocentration method, chloroform and methnol were used as extraction and disperser solvents respectively and the ligand 5-(4- isopropoxy-6-(methyl amino)-5- nitrosopyrimidine-2-yl) diazenyl) quinolin-8-ol was used as a reagent for the extraction of Cd (II), Visible spectrophotometry was used for the estimation of the analyte after preconcentration. The influence of various factors on the extraction was investigated, for example disperser and extraction solvent type, pH and concentration of chelating agent. At optimum condition, the enrichment factors of (95) was gotten, the calibration graph was linear in the range (20–100) ng. mL−1 Cd+2 with detection limit of (4.46) ng. mL−1 and relative standard deviation (RSD) for seven duplicate measurements of 60 ng. mL−1 of Cd+2 was (1.12)%.The method was used to the estimation of Cd+2 in some food samples.
Application, Dispersive liquid- liquid microextraction, Cadmium, Preconcentration, New organic reagent
