Criteria and algorithms for the choice of analytical wave-lengths in the quantitative spectrophotometric analysis of multicomponent mixtures

Global optimization by simulated annealing with wavelength selection for ultraviolet-visible spectrophotometry

“…Bialkowski recently provided mathematical evidence for their observations with spectral scanning instruments (25). Similar results have been acquired (9,10). Several other investigations using least squares have shown improvements in results are possible if wavelength ranges which highlight spectral features are used (11)(12)(13).…”

“…Depending on the specific spectral situation, fine tuning of ß is necessary to achieve the proper percentage of accepted detrimental steps. GSA was applied to a previously studied four-component system containing RNA constituents adenylic, cytidylic, and guanylic, and urdiylic acids (10,14,24). Spectra for these compounds were recorded from 220 to 290 nm and digitized at 2-nm intervals (24).…”

“…The noise content of spectra was recognized as the source of discrepancy. Bershtein also studied this system and decided six wavelengths measured six times was best (10). A list of selected wavelengths was not available for comparison with those selected by GSA.…”

“…Wavelength selection was chosen because of the numerous investigations in performing automatic selections (7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24). The proposed methods require complex computations and many do not assure selection of the global optimum wavelength set.…”