Abstract
Abstract Propylene glycol, glycerine, and triethylene glycol were extracted from 10.0 g tobacco by shaking 1 hr with methanol. All three polyols were determined simultaneously by GLC of the supernatant extract, using a 42 × 3/16″ column of 1 + 1 Diatoport S-Chromosorb 101 coated with 5% Carbowax 20M-terephthalic acid. The column temperature was programmed at 90−240°C; anethole was used as the internal standard. The method was studied collaboratively by 11 laboratories. Systematic errors have been reduced to acceptable levels except in samples containing very low or high concentrations of a given humectant.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
