Abstract
A procedure employing and GLC techniques for the analysis of algal chlorophylls and their degradation products has been developed and evaluated. Algal pigments were separated on MN 300 cellulose plates developed in an ascending solvent system of hexane saturated with acetonitrile and n-propanol (100:0,4, v:v). Quantitation of chlorophyll a, b and pheophytin a, b were accomplished by GLC analysis of their phytol, following alkaline methanolic hydrolysis of the individual pigments. The amount of chlorophyllides/pheophorbides in a sample was estimated by its free phytol content. This technique is especially valuable for the evaluation of the pigment contents of near sediment phytoplankton and periphyton samples, where large quantities of chlorophyll degradation products and/or carotenoid pigments are generally present which may interfere significantly with the routine analytical methods.
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