Gas phase infrared spectra of 209 polychlorinated biphenyl congeners using gas chromatography with Fourier transform infrared detection: Internal standardization with a 13C-labelled congener

1995 ◽  
Vol 29 (3) ◽  
pp. 322-326 ◽  
Author(s):  
B. Bush ◽  
E.L. Barnard
Keyword(s):  
Gas Chromatography ◽  
Fourier Transform ◽  
Gas Phase ◽  
Infrared Spectra ◽  
Polychlorinated Biphenyl ◽  
Fourier Transform Infrared ◽  
Infrared Detection ◽  
Internal Standardization

scholarly journals Predicting enteric methane emission of dairy cows with milk Fourier-transform infrared spectra and gas chromatography–based milk fatty acid profiles

2018 ◽  
Vol 101 (6) ◽  
pp. 5582-5598 ◽  
Author(s):  
S. van Gastelen ◽  
H. Mollenhorst ◽  
E.C. Antunes-Fernandes ◽  
K.A. Hettinga ◽  
G.G. van Burgsteden ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fourier Transform ◽  
Fatty Acid ◽  
Dairy Cows ◽  
Infrared Spectra ◽  
Methane Emission ◽  
Fourier Transform Infrared ◽  
Milk Fatty Acid ◽  
Fatty Acid Profiles ◽  
Enteric Methane

Simultaneous Orthogonal Drug Detection Using Fully Integrated Gas Chromatography with Fourier Transform Infrared Detection and Mass Spectrometric Detection

2016 ◽  
Vol 71 (5) ◽  
pp. 1050-1059 ◽  
Author(s):  
Adam Lanzarotta ◽  
Travis Falconer ◽  
Heather McCauley ◽  
Lisa Lorenz ◽  
Douglas Albright ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fourier Transform ◽  
Synthetic Cannabinoids ◽  
Fourier Transform Infrared ◽  
Mass Spectrometric ◽  
Mass Spectrometric Detection ◽  
Infrared Detection ◽  
Ir Detector ◽  
Fully Integrated ◽  
Ft Ir

Analytes that co-elute and yield nearly identical electron ionization (EI) mass spectra, as well as analytes that yield non-specific EI fragmentation patterns, have been identified using fully integrated gas chromatography with direct deposit Fourier transform infrared detection and mass spectrometric detection (GC/FT-IR/MS). While the IR detector proved to be more selective for identifying analytes such as synthetic cannabinoids and weight loss drugs, it was limited by a relatively high detection limit of 8.4 parts per million (ppm) for non-targeted identification of sibutramine based on a single injection but was reduced to 840  parts per billion (ppb) for targeted identification of sibutramine by redepositing ten injections along the same track. The MS detector was less selective for identifying these analytes but yielded non-targeted and targeted detection limits of approximately 84 ppb and 8.4 ppb, respectively, which corresponded to a 100-fold advantage compared to the IR detector. Overall, the results of this study demonstrate that the advantages of each detector compensate for the limitations of the other, which allows a wider range of analytes and concentrations to be examined using a fully integrated GC/FT-IR/MS instrument compared to what can be examined using GC/IR or GC/MS independently. Not only does this approach reduce consumption of laboratory resources and time, it provides IR and MS information on the same sample, which is important for forensic analyses that require data from two or more orthogonal techniques to make an identification.

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