Large differences of the concentration ratios between BDE99 and BDE100 in crab viscera (32:68) and in leg muscle (83:17) was found.
BDE209 can be biodegraded to BDE47 through BDE154 and BDE99 in marine organism.
Higher percentage of BDE154 was found in viscera than that in other tissues of marine organism of Bohai Bay.
The BMF values of individual BDE congeners were different in muscle and viscera within feeding relationships.