Study on chemical forms of fluorine enrichment of Antarctic krill

The different forms fluorine in different parts of molting process of krill was analyzed by culture of Antarctic krill (Euphausia superba).The results show that fluorine amount in cuticle is up to 90% of total in the krill.During the krill molting process, the fluorine content in cuticle and muscle varies alternatively.This is to say, the fluorine content in new cuticle and muscle is much lower after molted, the fluorine in krill comes from seawater by biological absorption of the krill, and the fluorine absorbed by krill lost with the old cuticle at the end stage of molting process.Meanwhile, the new molting process starts again.The evidence is proved by the change of different fomls fluorine content in cuticle and muscle during krill's molting process.At last the author proposes the fluorine enriching process model of Antarctic krill.