Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
DETECTABILITY ENHANCEMENT BY THE USE OF LARGE-VOLUME INJECTIONS IN GAS-CHROMATOGRAPHY CRYOTRAPPING FOURIER-TRANSFORM INFRARED SPECTROMETRY
Autore:
HANKEMEIER T; VANDERLAAN HTC; VREULS JJ; VREDENBREGT MJ; VISSER T; BRINKMAN UAT;
Indirizzi:
FREE UNIV AMSTERDAM,DEPT ANALYT CHEM,DE BOELELAAN 1083 1081 HV AMSTERDAM NETHERLANDS NATL INST PUBL HLTH & ENVIRONM PROTECT,LAB ORGAN ANALY CHEM 3720 BA BILTHOVEN NETHERLANDS
Titolo Testata:
Journal of chromatography
fascicolo: 1, volume: 732, anno: 1996,
pagine: 75 - 84
Fonte:
ISI
Lingua:
ENG
Soggetto:
GC-FTIR; IDENTIFICATION; COLUMN; TOOL;
Keywords:
LARGE-VOLUME INJECTION; CRYOGENIC TRAPPING; SENSITIVITY ENHANCEMENT; INJECTION METHODS; WATER ANALYSIS; ENVIRONMENTAL ANALYSIS; INTERFACES, GC-FT-IR; ALKANES; POLYNUCLEAR AROMATIC HYDROCARBONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
T. Hankemeier et al., "DETECTABILITY ENHANCEMENT BY THE USE OF LARGE-VOLUME INJECTIONS IN GAS-CHROMATOGRAPHY CRYOTRAPPING FOURIER-TRANSFORM INFRARED SPECTROMETRY", Journal of chromatography, 732(1), 1996, pp. 75-84

Abstract

The use of large-volume injections via a loop-type interface in GC-cryotrapping-FT-IR has been studied, n-Alkanes and polycyclic aromatic hydrocarbons (PAHs) were used as test compounds. When using 100-mu l injections the analyte detectability was enhanced by two to three ordersof magnitude compared with conventional split/splitless injections. For the alkanes, the absolute detection limits were nearly independent of the injected volume and the mode of injection. With the PAHs a water background (due to press-fit connections and six-port valves) somewhat disturbed the GC-FT-IR chromatograms and the spectra of the PAHs. This detracts from the system performance. Still, upon going from split/splitless injections to 100-200 mu l injections, analyte detectability was increased by a factor of 30-500. The repeatability of the total 100-mu l GC-cryotrapping-FT-IR procedure was satisfactory. The potential of the set-up was demonstrated by determining PAHs in river water at the 0.5 mu g/l level by means of ''micro'' liquid-liquid extraction and 100-mu l GC-cryotrapping-FT-IR. The FT-IR spectra obtained matchedwell with those of standard libraries.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 06:08:24