Essential Metal Co In Sponges Porifera From Spermonde Archipelago

ABSTRACT Sponge is an invertebrate animal commonly found in Spermonde Archipelago. It is known as an animal living as filter feeder. Sponge is capable of accumulating heavy metals including cobalt Co. Co is an essential metal in low concentration but a pollutant in high concentration. Sponges used in this study were Melophlus sarassinorum Callyspongia aerizusa and Clathria reinwardtii. Sponges were analyzed based on modified Muller et al 1998 method. Co concentrations were determined using ICP-OES. Co metal in three sponge species from seven different islands indicated equal concentration 2 mgkg except for the sponge Callyspongia aerizusa from Lae-Lae and Barrang Caddi islands that accumulated lower Co 0.5 mgkg.