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Research Journal of Pharmacy and Technology
Year : 2020, Volume : 13, Issue : 8
First page : ( 3631) Last page : ( 3637)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2020.00642.3

Application of dispersive liquid-liquid micro extraction combined with spectrophotometric technique for preconcentration and determination of cadmium using new organic reagent

Tariq Zianab1,*, Saadi Lina2, Adnan Shaimaa3

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

*Corresponding Author E-mail: ebraheemzainab@yahoo.com

Online published on 16 September, 2020.

Abstract

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.

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Keywords

Application, Dispersive liquid- liquid microextraction, Cadmium, Preconcentration, New organic reagent.

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