About OKUBO KENJI
About 東レリサーチセ
About 環境と測定技術
About surfactant
About health effect
About Other cleaning agents
About Physical analysis of organic substances in general
About Perfluorooctanesulfonic acid
About Perfluorooctanoic acid
About PFOS
About PFOA
About 問題
About 動向
About 分析