Determining Copper, Lead, and Cadmium Simultaneously
Author Information
Author(s): Shouxin Ren, Ling Gao
Primary Institution: Department of Chemistry, Inner Mongolian University
Hypothesis
Can the full spectrum technique in the Fourier domain successfully determine copper(II), lead(II), and cadmium(II) concentrations despite overlapping absorption spectra?
Conclusion
The full spectrum techniques in the Fourier domain successfully determined copper(II), lead(II), and cadmium(II) concentrations, overcoming the challenges posed by overlapping absorption spectra.
Supporting Evidence
- The method achieved recoveries of Cu(II), Pb(II), and Cd(II) between 98.8% and 101.1%.
- Data reduction was performed using principal component analysis (PCA) algorithm.
- Seven error functions were calculated to deduce the number of factors for analysis.
Takeaway
This study found a way to measure three metals in a mixture at the same time, even when their colors mix together and make it hard to see them separately.
Methodology
The study used a full spectrum technique with a computer program to analyze the absorption spectra of metal ion mixtures.
Limitations
The method may have low selectivity due to the high degree of spectral overlap.
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