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The recording (column or paper strip) on which the constituents of a mixture are adsorbed in chromatography.An illustration of the seperation of leaf pigments to determine what pigments are within a particular species. For instance, a plant may possess the pigments chlorophyll a, chlorophyll b, xantophyll and carotene in its photosynthetic leaves, and this in turn can illustrate what colours of light the plant absorbs via comparing the chromatogram to an action Spectrum.