Method and apparatus for the evaluation of spectroscopic measurements on solid materials having spatially and / or temporally varying surfaces

摘要

If in the case of a spectroscopic measurement materials with spatially and / or temporally varying surfaces are present, are obtained by the varying distance considerable errors influence of possibilities, when the signal intensities of the spectra are measured and evaluated. According to the invention, of continuously acquired spectra instead of the intensity or absorption, especially their derivatives with respect to the wavelength is evaluated, as a result of which the effects of the spatially and / or temporally varying distance of the surface of the material to be eliminated to the radiation source. In addition, a series of mechanical measures is provided, with which the unavoidable varying distances between the sensor and the sample be minimized even before the measurement.