Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
581057 | Journal of Hazardous Materials | 2009 | 5 Pages |
Abstract
A sensitive, simple separation and solid-phase procedure, which is sorption and desorption of cadmium on modified clinoptilolite zeolite (with surfactant and neothorine), for preconcentration of cadmium prior to analysis by FAAS is described. The sorbent has exhibited good sorption potential for cadmium at pH 5. Cadmium was eluted from the column by nitric acid which resulted in preconcentration factor of 160. Thermodynamic behaviors for the process are investigated and adsorption process is interpreted in term of Freundlich equation. A detection limit of 0.015 ng mLâ1 was obtained and it is shown that calibration curve is linear from 0.01 to 4.0 μg mLâ1 in the final solution. Furthermore, the effects of various parameters such as pH, flow rate of the sample and eluent solution were studied. This method was successfully applied for determination of cadmium in various plant and real water samples.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Akbar Malekpour, Saeed Hajialigol, Mohammad Ali Taher,