[' perfluorinated compounds ', ' perfluorobutanesulfonate ', ' perfluorodecanoic acid ', ' perfluorododecanoic acid ', ' perfluorohexanesulfonate ', ' perfluorohexanoic acid ', ' perfluorononanoic acid ', ' perfluorooctanesulfonamide ', ' perfluorooctanesulfonate ', ' perfluoroundecanoic acid ']