| 摘要 |
A spectrophotometer is provided, including a sample holder adapted to present internally several different path lengths to radiation of several wavelengths emitted from a source; a detection arrangement for detecting a wavelength dependent intensity of emitted radiation after it has traversed one of the path lengths and for providing an output indicative thereof; and an arithmetic unit operably connected to receive the output and to generate therefrom one or both a quantitative and a qualitative indication of a substance of interest within a sample. The arithmetic unit is adapted to calculate a value dependent on the ratio of received outputs at two of the different path lengths for a same one of the emitted wavelengths and to generate by means of a multivariate statistical analysis of the calculated value at each of the wavelengths one or both the quantitative and the qualitative indications.
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