1.
J Pharm Biomed Anal
; 54(2): 401-5, 2011 Jan 25.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20880648
RESUMO
We report a novel use of solid-state ¹9F nuclear magnetic resonance to detect and quantify polytetrafluoroethylene contamination from laboratory equipment, which due to low quantity (up to 1% w/w) and insolubility remained undetected by standard analytical techniques. Solid-state ¹9F NMR is shown to be highly sensitive to such fluoropolymers (detection limit 0.02% w/w), and is demonstrated as a useful analytical tool for structure elucidation of unknown solid materials.