The results showed the level of PFOS and other substances exceeded the ministry’s target at all 14 surveyed sites near the U.S. Kadena Air Base, which straddles Okinawa, Kadena, Chatan and other ...

A reading of perfluorooctane sulfonic acid (PFOS) at one site of the Futenma No. 2 Elementary School was about 29 times that of PFOS levels deemed under U.S. environmental guidelines to carry ...

Figure 2. Chemical structure of PFOS in its neutral and anionic form. Credit: Technology Networks. PFOS is a type of PFAS, despite its sulfonic acid group, and has been one of the most widely used ...