| Autor: |
Honigs, D. E., Hieftje, G. M., Hirschfeld, T. |
| Zdroj: |
Applied Spectroscopy; March 1985, Vol. 39 Issue: 2 p253-256, 4p |
| Abstrakt: |
The existence of optimal absorbance levels for absorption spectrophotometry is well known. The corresponding phenomenon in the multiwavelength measurements characteristic of correlation spectroscopy lends itself to a similar analysis. The resulting optimization equation is quite complex, but can be approximated for several simplified cases. For very similar absorbances among the set of used wavelengths, or for a situation where the absorbance multiplied by its weighting factor at a given wavelength is far greater than for all the others, the classical optimum at A= 0.434 still applies. For a uniform distribution of absorbance, the optimal maximum absorption is A= 0.868. The complex general case can be rearranged to calculate, given data at a given pathlength, what the optimum pathlength should be. In multiwavelength determinations, the optimal condition involves equal relative error in the largest and the smallest absorbance. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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