From: Toxicology of perfluorinated compounds
Substance
Olsen et al.[69, 85]
Calafat et al.[95]
1974
1989
2001
1999 to 2000
2003 to 2004
PFOS
29.5
34.7
35.8
30.4
20.7
PFOA
2.3
5.6
4.7
5.2
3.9
PFHxS
1.6
2.4
1.5
2.1
1.9
