Abstract:

This paper reports the results of absorption spectrum of Ulothrix sp. attached to the rocks collected from the high tide area in front of the Great Wall Station, Antarctica in February 1989 as well as the benthic diatoms growing on small stones and in the edge of swamps. Six kinds of pigments were isolated and identified in benthic diatoms.They are carotene, chlorophyll a,fucoxanthin, chlorophyllin,P.neoxanthin and chlorophyll c.Nine kinds of pigments were identified in Ulothrix sp.. They are carotinoid, pheophytin, chlorophyll a, b, chlorophyllin chlorophyllide a,neoxanthin, chlorophyll c and pheophytin c. The intertidal benthic diatoms and Ulothrix sp. have specific absorption spectra and there are also marked differences in the composition of algal pigments they contain since the pigments of marine algae show differences in their absorption spectra, the absorption spectrum can be used to identify the species of marine algae.