The Department of Chemistry at the College of Education for Pure Sciences discussed the master’s thesis for the student (Montadhar Muhammad Ali) entitled (Spectral determination of cadmium (II) and mercury (II) ions using organic azo-azo chlorine reagents derived from imidazole), under the supervision of Prof. Dr. (Mounir Abdel Aali) Al-Daami), and Lect. (Saleh Hadi Kazem). The study aimed to:
1- Preparation of two reagents from azo compounds and azo lipids using the traditional azotification method. 2_Diagnosis of the two prepared detectors using (UV-Vis), (FT-IR) and (1HNMR) techniques. 3- Determining the optimal conditions for the formation of complexes, including the effect of the acid function. 4- Compatibility and control study of the analytical method for the determination of cadmium (II) ion and mercury (II) using licandin. 5- Preparation and diagnosis of solid complexes by (UV-Vis), (FT-IR), (1HNMR), molar electrical conductivity and magnetic sensitivity. As for the most prominent conclusions: 1. The two reagents were prepared by the traditional nitrogen method, which is a simple method with a high product, and it was according to simplified conditions. 2. The possibility of using the two detectors spectroscopically to estimate microgram amounts of cadmium (II) and mercury (II). 3. The method for the determination of the selected ions of cadmium (II) and mercury (II) with the prepared ligandine is simple and quick after fixing the optimal conditions of the pH function. 4. The negative values of the thermodynamic functions of cadmium (II) and mercury (II) complexes indicate the spontaneity of the reaction and that this reaction is exothermic. 5. After reaching the results of determining the equivalence of the complexes using the molar ratios method and the continuous changes method (Job’s method), it was found that the ratio of the ligand to the ion is (2:1), that is, one mole of the metal ion to two moles of the ligand. 6. The electrical conductivity values indicate that all complexes are non-electrolyte. 7. By using the technique of infrared spectroscopy and proton nuclear magnetic resonance, the formation of the prepared complexes was confirmed. 8. By calculating the values of the molar absorption coefficient and the matching and tuning deviation, we conclude that these analytical methods are sensitive, easy, fast, accurate, tunable and good selective.
After extensive scientific discussion and listening to the student’s defense of his message, his method of research and his use of sources and references, the thesis was approved with excellent degree. Congratulations to the student, his supervisor, the College of Education for Pure Sciences and the University of Karbala, and to more creativity in the service of our beloved Iraq, and from God Almighty success and payment.
