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Titolo:
Identification of compounds and specific functional groups in the wavelength region 168-330 nm using gas chromatography with UV detection
Autore:
Lagesson, V; Lagesson-Andrasko, L; Andrasko, J; Baco, F;
Indirizzi:
GC UV Ctr, S-58721 Linkoping, Sweden GC UV Ctr Linkoping Sweden S-58721GC UV Ctr, S-58721 Linkoping, Sweden Natl Lab Forens Sci, S-58194 Linkoping, Sweden Natl Lab Forens Sci Linkoping Sweden S-58194 , S-58194 Linkoping, Sweden Inst Francais Petr, CEDI Rene Navarre, F-69390 Vernaison, France Inst Francais Petr Vernaison France F-69390 e, F-69390 Vernaison, France
Titolo Testata:
JOURNAL OF CHROMATOGRAPHY A
fascicolo: 1-2, volume: 867, anno: 2000,
pagine: 187 - 206
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR ABSORPTION SPECTROMETRY; SCANNING ULTRAVIOLET DETECTION; ARRAY SPECTROPHOTOMETER; FLOW CELL; PHASE; ISOPRENE;
Keywords:
UV detection; detection, GC; cigarette smoke; flavours; dust; petroleum; sensitivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Lagesson, V GC UV Ctr, Kobergsgrand 2, S-58721 Linkoping, Sweden GC UV CtrKobergsgrand 2 Linkoping Sweden S-58721 ing, Sweden
Citazione:
V. Lagesson et al., "Identification of compounds and specific functional groups in the wavelength region 168-330 nm using gas chromatography with UV detection", J CHROMAT A, 867(1-2), 2000, pp. 187-206

Abstract

A GC-UV instrumental set up with two different GC units has been used for determination of specific functional groups and compounds in complex mixtures. Separations have been made using a micro gas chromatograph built into agas flow cell and by means of an external capillary gas chromatograph linked to the same gas flow cell. Four various applications (cigarette smoke, petroleum, dust, flavour) have been performed in order to demonstrate the potential of the GC-UV method. Gas phase UV spectra have been recorded in theregion of 168-330 nm. Based on a gas phase spectrum reference library the identification of unknowns as well as the determination of specific functional groups have been achieved. A table showing the spectral shapes and positions of the absorption bands for 50 specific functional groups is presented. The advantage of using derivative spectra in order to amplify spectral details and improve selectivity is discussed. Regarding sensitivity, it has been found that identifications can be made in the mid-pg range and limit of detection for naphthalenes are at a level of 0.5-3 pg/s. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 23/01/20 alle ore 07:27:14