Capillary gas chromatography — Fourier transform infrared spectroscopy: theory and applications

Isomeric Fluoro-methoxy-phenylalkylamines: a new series of controlled-substance analogues (designer drugs)

“…The N-H absorption bands near 3450 cm À1 become quite weak in the vapor phase and may be lost in noise [31]. Fig.…”

Gas chromatography‐fourier transform infrared spectrometry of fatty acids: New applications with a direct deposition interface

“…The most common one is a gas cell (so-called light-pipe) through which the eluate passes (2) and where vapor phase spectra are collected. This technique has achieved a certain popularity in analyses of flavor compounds (3,4) and was successfully applied in the analyses of unsaturated FAME (5). Thus, it made possible the distinction of the size of the ring (5 or 6 carbon atoms), in unsaturated cyclic fatty acids formed in frying oils, by differentiating cis double bonds in a five-membered ring from those in a six-membered ring (6).…”

Analysis of the Plant Volatile Fraction

“…46 Fourier transform infrared spectroscopy (FT-IR) has also been proposed as a detector for GC (GC-FT-IR) 47 but, although it is closely complementary to MS in component identification, its use has quite unexpectedly been almost abandoned after the encouraging success at its introduction in the mid-1980s.…”

“…the narrow side of the cyclodextrin) with a bulky group (tert-butyldimethylsilyl-or tert-hexyldimethylsilyl-) 81 and with alkylated and acylated groups at C(2) and C(3) (mainly methyl, ethyl, acetyl) on its wider side. The effectiveness of cyclodextrin derivatives as chiral selector for ES-GC is clearly shown by the separation of the chiral test components (45)(46)(47)(48)(49)(50)(51) developed in the authors' laboratory 82 analysed on 2,3-diethyl-6-tert-butyl-dimethyl-silyl-b-cyclodextrin (2,3DE6TBDMS-b-CD) diluted in PS-086, as reported in Figure 3.13.…”