研究目的
Investigating the spectrophotometric determination of copper in water and soil samples using Dimethylglyoxime as a coordinating ligand.
研究成果
The developed spectrophotometric method using Dimethylglyoxime as a coordinating ligand is cost-effective, simple, and accurate for determining copper ions in water and soil samples. It provides clear information about the composition of the complex and the concentration of copper ion.
研究不足
The method's applicability is limited to the range of 0.05 to 0.995 μg/ml of copper concentration. The optimal pH for complex stability is around 10.0, limiting the method's use outside this pH range.
1：Experimental Design and Method Selection:
The method involves the chelation of Dimethylglyoxime ligand with Copper under optimal conditions, forming 1:2 complexes.
2：Sample Selection and Data Sources:
Water and soil samples were used.
3：List of Experimental Equipment and Materials:
UV-VIS Spectrophotometer, Elico pH meter, copper sulphate, Dimethylglyoxime, ethanol, ammonium acetate, acetic acid.
4：Experimental Procedures and Operational Workflow:
Preparation of copper sulphate and Dimethylglyoxime solutions, determination of λmax, effect of pH, Job’s method of continuous variation, mole ratio method, and applicability of Beer’s law.
5：Data Analysis Methods:
Spectrophotometric analysis at 517 nm, plotting graphs between absorbance and wavelength/pH/mole fraction.
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