Thiazolidinone Steroids Impregnated Polyurethane Foams as a Solid Phase Extractant for the Extraction and Preconcentration of CadmiumII from Industrial WastewaterReportar como inadecuado




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E-Journal of Chemistry - Volume 8 2011, Issue 2, Pages 887-895



Department of Chemistry, Faculty of Science, King Abdulaziz UniversityP. O. Box 80203 Jeddah 21589, Kingdom of Saudi Arabia

Department of ChemistryFaculty of Science at Damiatta, Mansoura University, Mansoura, Egypt

Received 4 July 2010; Accepted 3 September 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Two new thiazolidinone steroids namely sulfadiazino-imino- steroid I and 3-sulfonamoyl-phenyl-spiro4-oxo-thiazolidin-2, 2`steroid II were prepared and characterized from their molecular weight determination and spectroscopic measurements. Compound II were physically immobilized onto polyurethane foams PUFs for the preconcentration of cadmiumII from acidic aqueous media containing iodide ions. The kinetics of the retention step of cadmiumII from aqueous solutions by compound II treated PUFs was studied. Particle diffusion was the most probable operating mechanism and did not control the kinetics of cadmiumII retention by compound II immobilized PUFs. A preconcentration - separation procedure is presented for the solid phase extraction of trace cadmiumII from aqueous media as its ternary complex ion associate with compound II in industrial wastewater samples onto compound II treated PUFs prior to determination by flame atomic absorption spectrometry FAAS. Compound II treated PUFs sorbent was successfully packed in glass column for complete extraction and - or determination of trace concentrations of cadmiumII in wastewater samples with satisfactory recovery 95±2.6. The cyclic voltammetry of compound II showed two well defined irreversible redox couples and suggested its possible use as complexing agent in stripping voltammetric determination of trace concentrations of toxic metal ions in wastewater.





Autor: Mohammad S. Tawfiq Makki, R. Mohammady Abdel-Rahman, K. Ommar Alfooty, and Mohammad S. El-Shahawi

Fuente: https://www.hindawi.com/



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