1 research outputs found
In-Tube Extraction-GC-MS as a High-Capacity Enrichment Technique for the Analysis of Alcoholic Beverages
An
in-tube extraction (ITEX) method for the GC-MS analysis of volatile
constituents of alcoholic beverages was developed and applied in the
analysis of 46 beers from six varieties, Alt, Helles, Kölsch,
Pilsener beer, Schwarzbier, and wheat beer, which are popular in Germany.
The extraction performance of nine different sorbent materials was
evaluated. The best overall sensitivity was achieved using Tenax TA,
with method detection limits down to 0.01 μg L<sup>–1</sup>, whereas the widest linear range was possible with PDMS, covering
almost 5 orders of magnitude. This is the first application of PDMS
in ITEX as a high-capacity extraction device and highlights the importance
of choosing the appropriate sorbent material for the analytical task
at hand. A satisfying chemometric discrimination of all analyzed beer
varieties was possible, and alcohol-free beers could clearly be separated
from regular beers, also