ECO-EFFICIENT FLOW INJECTION ANALYSIS METHOD FOR CADMIUM ION QUANTIFICATION IN NATURAL AND PREPARED WATER SAMPLES
Al-Oqaili F. Mohammed M.A. Ahmed S.G. Abdullah O.I. Al-Ogaidi A.J.M. Hassan S.S. Abdullah T.A.
2025Scibulcom Ltd.
Journal of Environmental Protection and Ecology
2025#26Issue 41243 - 1252 pp.
A spectrophotometric method (batch and rFIA) was developed to determine the cadmium ion at 435 nm, based on the reaction of the cadmium ion with doxycycline to give a coloured compound. A set of physical and chemical variables were studied in the method used for the following factors: reagent concentration, acid concentration used, sample volume, solution flow rate, injected reagent volume, and reaction coil length. The interference effect of some potential positive and negative ions on the identification process and the possibility of blocking it using some suitable blocking agents have also been studied. The equivalence of the resulting product was studied using the molar ratio and continuous variations methods and found to be 2:1 (Cd: DCH) and a linear range of 0.3–10 μg ml–1 for the batch method, 0.1–30 μg ml–1 rFIA, and the limits of detection 0.1 and 0.09 μg ml–1, respectively. It was found that rFIA is a new method for iron determination by DCH. The proposed methods have been successfully applied for cadmium determination in environmental media and the results are satisfactory.
Cadmium ion , complex formation , FIA , micro determination
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Applied Sciences Department, University of Technology, Baghdad, Iraq
College of Engineering, AlNaji University, Baghdad, Iraq
Department of Energy Engineering, College of Engineering, University of Baghdad, Iraq
Department of Mechanics, Al-Farabi Kazakh National University, Almaty, 050 040, Kazakhstan
Applied Sciences Department
College of Engineering
Department of Energy Engineering
Department of Mechanics
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