|
|||||
|
|
Separation of perfluoroalkylsulfinic acids and perfluoroalkylsulfonic acids by ion-exclusion chromatography |
|
| Authors: | Takashi Abe Hajime Baba Eisei Itoh Kazuhiko Tanaka |
| Affiliation: | a National Industrial Research Institute of Nagoya (NIRIN), Hirate-cho 1-1, Kita-ku, Nagoya 462-8510, Japan b Research Institute of Innovative Technology for the Earth, Department for New Refrigerants Research, c/o NIRIN, Hirate-cho 1-1, Kita-ku, Nagoya 462-8510, Japan c Saitama Institute of Technology, Okabe, Saitama 369-0293, Japan |
| Abstract: | Ion-exclusion chromatography has been successfully applied to the separation of a number of perfluoroalkylsulfinic acids and perfluoroalkylsulfonic acids. The separation of various perfluoroalkylsulfinic and perfluoroalkylsulfonic acids, with different alkyl groups, was investigated on a polymethacrylate-based, weakly acidic, cation-exchange resin (TSK gel OApak-A) in the H+-form and using conductimetric detection. When water was used as the eluent, these perfluoroalkylsulfinic and perfluoroalkylsulfonic acids could not be resolved. When an aqueous solution of benzoic acid and o-phthalic acid was used, the separation of each of these acids occurred. In order to improve their separation, the effect of the addition of methanol and 2,2,2-trifluoroethanol, as organic modifiers, was also investigated. |
| Keywords: | Perfluoroalkylsulfinic acids Perfluoroalkylsulfonic acids Organic acids Organofluorine compounds Organosulfur compounds |
| 本文献已被 ScienceDirect 等数据库收录！ | |