Lee, Changgook published the artcileDevelopment of a simultaneous multiple solid-phase microextraction-single shot-gas chromatography/mass spectrometry method and application to aroma profile analysis of commercial coffee, COA of Formula: C13H16O, the main research area is coffee aroma determination microextraction gas chromatog mass spectrometry.
A simultaneous multiple solid-phase microextraction-single shot-gas chromatog. mass spectrometry (smSPME-ss-GC/MS) method has been developed for headspace anal. Up to four fibers (50/30 μm DVB/CAR/PDMS) were used simultaneously for the extraction of aroma components from the headspace of a single sample chamber in order to increase sensitivity of aroma extraction To avoid peak broadening and to maximize resolution, a simple cryofocusing technique was adopted during sequential thermal desorption of multiple SPME fibers prior to a single shot chromatog. run. The method was developed and validated on a model flavor mixture, containing 81 known pure components. With the conditions of 10 min of incubation and 30 min of extraction at 50°, single, dual, triple and quadruple SPME extractions were compared. The increase in total peak area with increase in the number of fibers showed good linearity (R2 = 0.9917) and the mean precision was 12.0% (RSD) for the total peak sum, with quadruple simultaneous SPME extraction Using a real sample such as com. coffee granules, aroma profile anal. was conducted using single, dual, triple and quadruple SPME fibers. The increase in total peak intensity again showed good linearity with increase in the number of SPME fibers used (R2 = 0.9992) and the precision of quadruple SPME extraction was 9.9% (RSD) for the total peak sum.
Journal of Chromatography A published new progress about Aldehydes Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, COA of Formula: C13H16O.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem