Separation and fluorine nuclear magnetic resonance spectroscopic (19F NMR) analysis of individual branched isomers present in technical perfluorooctanesulfonic acid (PFOS).
The production of perfluoroalkylsulfonate (PFOS) derivatives from linear alkyl precursors using electrochemical fluorination is not a clean process but, instead, gives complex mixtures. This study reports the isolation and (19)F NMR characterization of eleven perfluorooctanesulfonate isomers from a commercial mixture. This allowed the quantification of the individual CF(3) branched isomers that predominate in technical PFOS.
Arsenault
Gilles
G
Wellington Laboratories Inc., Research Division, Guelph, Ontario, Canada N1G 3M5. gilles@well-labs.com
Chittim
Brock
B
Gu
Jun
J
McAlees
Alan
A
McCrindle
Robert
R
Robertson
Valerie
V
D017738:Alkanesulfonic Acids / Q000737:chemistry* / Q000302:isolation & purification*; D045424:Complex Mixtures / Q000737:chemistry; D005459:Fluorides / Q000737:chemistry; D005466:Fluorocarbons / Q000737:chemistry* / Q000302:isolation & purification*; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy
D017738:Alkanesulfonic Acids; D045424:Complex Mixtures; D005466:Fluorocarbons; C076994:perfluorooctane sulfonic acid; D005459:Fluorides