Table 2 PFOA and PFOS levels in outdoor air and indoor dust in Japan and several other countries
Sampling site | n | Units | PFOA | PFOS | Ref. | |||||
|---|---|---|---|---|---|---|---|---|---|---|
GM | GSD | Range | GM | GSD | Range | |||||
Japan | Oyamazaki Town (on a highway) 2001/April 2002/March | 12 | pg/m3 air |  |  |  | 5.3 | 1.2 | 2.3–21.8 | [32] |
|  |  | ng/g dust |  |  |  | 97.4 | 1.2 | 38.0–427.4 |  | |
|  | 12 | pg/m3 air | 263 | 2.4 | 71.8–919.4 | 5.2 | 1.4 | 2.5–9.8 | [30] | |
|  |  | ng/g dust | 3,413 | 2.4 | 469–9049 | 72.2 | 1.8 | 19.7–168.0 |  | |
Fukuchiyama City (on a local road) 2001/April 2002/March | 12 | pg/m3 air | Â | Â | Â | 0.6 | 1.3 | ND-2.1 | [32] | |
| Â | Â | ng/g dust | Â | Â | Â | 19.2 | 1.2 | ND-60.6 | Â | |
Morioka City (on a local road) 2003/July | 8 | pg/m3 air | 2.0 | 1.2 | 1.6–2.6 | 0.7 | 1.4 | 0.5–1.2 | [30] | |
Japan (20 sites) 2004 | 20 | pg/m3 air | 9.0 |  | 6.0–2500 | 1.8 |  | <0.1–30 | [33] | |
Indoor dust (general home) | 16 | ng/g dust | 178 | 2.6 | 69.0–3700 | 39.5 | 3.9 | 11.0–2500 | [37] | |
Indoor dust (0.075–1 mm) (general home) | 20 | ng/g dust | 36.1 | 1.5 | 18–89 | 19.9 | 1.6 | 7–41 | [36] | |
Other | Lake Ontario (over a lake) | 8 | pg/m3 air | Â | Â | Â | 6.4 | 3.3 | Â | [34] |
Manchester, UK 2003/July | 2 | pg/m3 air | Mean 341 | Â | Mean 46 | Â | [35] | |||
Indoor dust, Ohio and North Carolina (general home) | 102 | ng/g dust | Median 142 | <10–1960 | Median 201 | <8.9–12,100 | [38] | |||