Abstract: A system or method for analyzing a sample include an input light source, a double subtractive monochromator positioned to receive light from the input light source and to sequentially illuminate the sample with each of a plurality of wavelengths, a multi-channel fluorescence detector positioned to receive and substantially simultaneously detect multiple wavelengths of light emitted by the sample for each of the plurality of excitation wavelengths, an absorption detector positioned to receive and detect light passing through the sample, and a computer in communication with the monochromator, the fluorescence detector, and the absorption detector, the computer controlling the monochromator to sequentially illuminate the sample with each of the plurality of wavelengths while measuring absorption and fluorescence of the sample based on signals received from the fluorescence and absorption detectors.

Abstract: A system or method for analyzing a sample include an input light source, a double subtractive monochromator positioned to receive light from the input light source and to sequentially illuminate the sample with each of a plurality of wavelengths, a multi-channel fluorescence detector positioned to receive and substantially simultaneously detect multiple wavelengths of light emitted by the sample for each of the plurality of excitation wavelengths, an absorption detector positioned to receive and detect light passing through the sample, and a computer in communication with the monochromator, the fluorescence detector, and the absorption detector, the computer controlling the monochromator to sequentially illuminate the sample with each of the plurality of wavelengths while measuring absorption and fluorescence of the sample based on signals received from the fluorescence and absorption detectors

Abstract: A method for identification of a sample of a material is disclosed. The method includes illuminating a sample at a plurality of excitation wavelengths, measuring the intensity at each of the plurality of excitation wavelengths, locating the values of maxima in the three-dimensional intensity contour, comparing the maxima to a library of values of known maxima associated with known species, generating a model of a three-dimensional intensity contour based on maxima values comprising values of likely maxima from the library, comparing the model of an intensity contour to the measured contour to determine residual errors, outputting the species associated with the maxima values used to generate the model as an indicator of species, determining corrections to the model of a three-dimensional intensity contour to generate a corrected model, and returning to the comparison step to test the corrected model.