Recent research advances on the bioaccumulation potentials of perfluorinated compounds

The bioaccumulation potentials of perfluorinated compounds(PFCs)are important for predicting chemical residues in organisms,developing environmental quality criteria and standards for protection of human health,and assessing the ecological risks of these chemicals.This review summarized the recent data on bioconcentration factors(BCFs),bioaccumulation factors(BAFs), biomagnification factors(BMFs),and trophic magnification fators(TMFs)of PFCs,and assessed the bioaccumulation potentials and the food web biomagnification powers of PFCs.The results showed that PFCs with more than seven fluorinated carbons had high bioaccumulation potentials in biota and food web,while PFCs with seven fluorinated carbons or less were not considered bioaccumulative.The physiochemical properties(e.g.,the length of fluorinated carbon chain,the functional groups in the end of fluorinated carbon chain,and whether have branched isomers)of PFCs,species and their biological parameters(e.g.,sex,body length,and body weight),and environmental factors(e.g.,the kind of ecosystems,water temperature,and the PFCs levels in the environment)would influence the bioaccumulation potentials of PFCs.To date,bioaccumulation and trophic transfer of PFCs is focused on the Arctic marine ecosystems,study on the bioaccumulation of PFCs in other areas especially in the typical polluted areas,and in the freshwater and terrestrial food webs should be performed,to assess the ecological risks of these chemicals.