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Titolo:
A COMPARISON OF FLAME IONIZATION AND OZONE CHEMILUMINESCENCE FOR THE DETERMINATION OF ATMOSPHERIC HYDROCARBONS
Autore:
MARLEY NA; GAFFNEY JS;
Indirizzi:
ARGONNE NATL LAB,DIV ENVIRONM RES,BLDG 203,9700 S CASS AVE ARGONNE IL60439
Titolo Testata:
Atmospheric environment
fascicolo: 8, volume: 32, anno: 1998,
pagine: 1435 - 1444
SICI:
1352-2310(1998)32:8<1435:ACOFIA>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMI-LUMINESCENCE; GAS-PHASE;
Keywords:
RELATIVE HYDROCARBONS; VOCS; FID; NATURAL HYDROCARBONS; ATMOSPHERIC CHEMISTRY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
N.A. Marley e J.S. Gaffney, "A COMPARISON OF FLAME IONIZATION AND OZONE CHEMILUMINESCENCE FOR THE DETERMINATION OF ATMOSPHERIC HYDROCARBONS", Atmospheric environment, 32(8), 1998, pp. 1435-1444

Abstract

A reactive hydrocarbon analyzer has been constructed on the basis of chemiluminescence reaction with ozone. This detector is designed to operate at varying temperatures which take advantage of the different rates of reaction of the hydrocarbon classes with ozone to yield a measure of their atmospheric reactivity. When operated at high temperatures(170 degrees C), all hydrocarbons will give a chemiluminescence signal. Reported here is a direct comparison of the ozone chemiluminescent detector (operated at a temperature of 170 degrees C) with a flame ionization detector. This comparison was accomplished by connecting a capillary gas chromatograph to each of the two detectors by means of a switching valve. Twenty-seven compounds representing alkanes, alkenes, aromatics, and oxygenated hydrocarbons (aldehydes, ketones, alcohols, and ethers) were studied. For the compounds studied, analytical sensitivities were 10-1000 times better for the chemiluminescence detector. The results of this comparison indicate that the response of the chemiluminescent detector at 170 degrees C correlates with a total carbon detector (flame ionization detection) and that total response is a measure of total carbon in the sample. The chemiluminescent system will be very useful for gas chromatographic detection of atmospheric hydrocarbons, particularly of oxygenates in complex mixtures. (C) 1998 ElsevierScience Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 22:56:49