Determination of tobacco alkaloids using solid phase microextraction and GC-NPD |
| |
Authors: | S S Yang I Smetena |
| |
Institution: | (1) Research Center, Philip Morris USA, 23261-6583 Richmond, VA, USA |
| |
Abstract: | Summary The sampling approaches using solid phase microextraction (SPME) were evaluated for the analysis of tobacco alkaloids. Because
of their low volatility and ionic nature, sampling alkaloids from the headspace of dry or wet tobacco samples often required
more effort to improve extraction efficiency. Directly dipping the SPME fiber coated with polydimethylsiloxane film into the
tobacco extract was proved to be a simple, effective tool for sampling alkaloids from tobacco. When combined with the practice
of fast GC and nitrogen-phosphorus detection, nicotine and a group of selected minor alkaloids (i.e., nornicotines, myosmine,
anabasine and anatabine) were separated with baseline resolution within 3 min. The detection limits for these alkaloids are
below 0.1 μg mL−1. In addition, the carry-over problem frequently occurred in alkaloids analysis was eliminated. The influence of tobacco matrix
and fiber aging on the partition of alkaloids, as well as the use of an internal standard to compensate these deviations,
were also studied. |
| |
Keywords: | Solid phase microextraction Gas chromatography-nitrogen phosphorus detection Alkaloid analysis Tobacco |
本文献已被 SpringerLink 等数据库收录! |
|