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Titolo:
ADSORPTION GAS-FLOW MODULATOR FOR SENSITIVITY INCREASE OF MASS-SPECTROMETRIC MEASUREMENTS
Autore:
KVITSINSKY VA; KRIVOSHEEV SI; MAKARCHUK VN;
Indirizzi:
COAL ENERGY TECHNOL CTR KIEV UKRAINE COAL ENERGY TECHNOL CTR KIEV UKRAINE
Titolo Testata:
Applied spectroscopy
fascicolo: 7, volume: 52, anno: 1998,
pagine: 919 - 927
SICI:
0003-7028(1998)52:7<919:AGMFSI>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHROMATOGRAPHY;
Keywords:
MASS SPECTROMETRY; ADSORPTIVE ENRICHMENT; GAS FLOW MODULATION; ONLINE ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
V.A. Kvitsinsky et al., "ADSORPTION GAS-FLOW MODULATOR FOR SENSITIVITY INCREASE OF MASS-SPECTROMETRIC MEASUREMENTS", Applied spectroscopy, 52(7), 1998, pp. 919-927

Abstract

A possibility for modulation of molecular flow through a capillary byits periodic heating and cooling has been investigated. The Knudsen gas flow (when the length of the molecule free path is greater than thediameter of the capillary at variable temperatures of the capillary) and the Linear isotherm of adsorption have been analyzed in terms of diffusion approximation. The analytical expression for the outlet flow has been obtained for any given time dependence of the capillary temperature and inlet flow. It has been demonstrated that such modulation can increase both sensitivity and selectivity of mass spectrometric measurements and could be used for on-line analysis of gas streams.

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Documento generato il 11/08/20 alle ore 15:37:49