FT-IR detection in gas chromatography

Visser, Taco D.

doi:10.1016/s0165-9936(02)00812-9

Cited by 34 publications

(25 citation statements)

References 40 publications

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“…The instrumentations with this type of detection allow the performance of the determinations in a very short time and for this reason, especially regarding milk quality control, they are currently adopted in the routine analyses [12]. As far as the detection of molecules in gas phase is concerned, FT-IR could be coupled to a gas chromatograph, being a universal, selective and specific detector, even if it has low sensitivity [13]. Moreover it could be combined with a thermo-analytical instrument.…”

Section: Introductionmentioning

confidence: 99%

Study on the Use of Evolved Gas Analysis FT-IR (EGA FT-IR) for the Evaluation of Cheese Volatile Fraction

Povolo¹

2011

TOFSJ

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The analysis of volatile compounds for food products characterization is currently performed by gas chromatographic separation, often coupled with mass spectrometry. In our research the possibility of the application of the Fourier-transform infrared spectroscopy (FT-IR) technique to the cheese volatile fraction evaluation was investigated. An Evolved Gas Analysis (EGA) FT-IR prototype, developed to detect some volatile molecules released from bottle grade PET, was used. The preliminary step of the work was devoted to the set up of the best analytical conditions and instrumental parameters for cheese analysis. Thirty nine samples of PDO Bitto cheeses were analysed by both EGA FT-IR and Solid Phase Microextraction/Gaschromatography/Mass Spectrometry (SPME/GC/MS) technique. Satisfactory correlations were observed between the FT-IR spectra and the most abundant compounds detected by SPME/GC/MS. Even though some aspects of the analytical conditions need to be improved, the results obtained are promising for a possible application of EGA FT-IR in the evaluation of volatile fraction of foods.

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Section: Introductionmentioning

confidence: 99%

Study on the Use of Evolved Gas Analysis FT-IR (EGA FT-IR) for the Evaluation of Cheese Volatile Fraction

Povolo¹

2011

TOFSJ

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“…Three consecutive injections were systematically carried out Identification of tropane alkaloids by GC-MS and GC-FTIR Natural Product Communications Vol. 4 (10) 2009 1347 and all retention indices were measured with an average reproducibility of better than ± 1 index unit. On-column injections of 1 µL (1 mg/mL) were used from a 10 µL syringe equipped with a 42 mm/0.47 mm o.d.…”

Section: Gc-fid/npdmentioning

confidence: 99%

“…Despite the fact that the mass spectrum of most compounds is unique, GC-MS shows some limitations in the differentiation of structural isomers. In such cases, GC coupled to Fourier-transformed infrared spectroscopy (GC-FTIR) is a valuable complementary or alternative identification technique [10]. It gives chemical information on functional groups, positional and configurational arrangements.…”

mentioning

confidence: 99%

Characterization of Positional and Configurational Tropane Alkaloid Isomers by Combining GC with NPD, MS and FTIR

Christen

Bieri²,

Muñoz

2009

Natural Product Communications

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A purified stem bark extract from Schizanthus grahamii was analyzed by combining capillary gas chromatography with a selective nitrogen phosphorus detector, mass spectrometry and Fourier transform infrared spectroscopy. Several positional and configurational tropane isomers were detected and their structural elucidation was tentatively determined based on mass spectra and confirmed by vapor phase infrared spectra. Electron impact mass spectra of the isomeric alkaloids were virtually superimposable, whereas the corresponding infrared spectra differed markedly. Retention indices were established under isothermal and temperature program conditions for further peak assignment and identification. In order to point out possible artifacts in the hot and surface-active injection port, different sample introduction techniques were evaluated, namely split, splitless and on-column injections.

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“…Direct determination of dithiocarbamate pesticides in spiked soil samples by microwave-assisted extraction with chloroform and measurement in solution has also been investigated [14]. On the other hand, FTIR is also employed as detector in high-performance liquid chromatography [15], supercritical fluid chromatography [16] and gas chromatography [17][18][19]. The main advantage of chromatographic techniques is that they provide a chemical separation of a complex mixture of analytes prior to FTIR spectrometry, but this separation step is often time-consuming and costly.…”

Section: Introductionmentioning

confidence: 99%

“…9-11) containing only one of the pesticides, samples (nos [12][13][14][15][16][17]. containing binary and ternary combinations at varying concentrations and solutions (nos [18][19][20]. without analytes (flow system blanks).…”

mentioning

confidence: 99%

Assessment of ftir spectrometry for pesticide screening of aqueous samples

Columé

Diewok

Lendl

2004

International Journal of Environmental Analytical Chemistry

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This article assesses the potential of Fourier transform infrared spectrometry (FTIR) to be used in pesticide screening and determination of selected pyrethroid and organochlorine pesticides in fresh water. FTIR spectra of 28 single pesticides in the dry state were recorded on a horizontal diamond attenuated total reflection (ATR) element. Hierachical cluster analysis of the recorded FTIR spectra (spectral range: 4000-500 cm À1 ) showed that different pesticide groups could be distinguished. A representative of each main group (dichlofuanid, captan and fenpropathrin) was selected and their direct simultaneous determination in fresh water without using a chromatographic separation step investigated. The developed analysis procedure comprised a liquid-liquid extraction step with n-hexane, further automated clean-up and preconcentration by solidphase extraction using a silica mini-column and final elution of the analyte with ethyl acetate. The extract containing the analytes was further concentrated and dried on the ATR element for spectrum acquisition. Using a partial least square (PLS) calibration it could be shown that all three analytes could be quantified in fresh water in a concentration range from 1.2 to 4.8 mg/L. Recoveries for dichlofuanid, captan and fenpropathrin from fortified tap and river waters ranged from 66.3 to 102.0% (captan was the pesticide providing the lowest values, 66.3 and 70.3%).

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FT-IR detection in gas chromatography

Cited by 34 publications

References 40 publications

Study on the Use of Evolved Gas Analysis FT-IR (EGA FT-IR) for the Evaluation of Cheese Volatile Fraction

Study on the Use of Evolved Gas Analysis FT-IR (EGA FT-IR) for the Evaluation of Cheese Volatile Fraction

Characterization of Positional and Configurational Tropane Alkaloid Isomers by Combining GC with NPD, MS and FTIR

Assessment of ftir spectrometry for pesticide screening of aqueous samples

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