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Titolo:
The performance of a gas and aerosol monitoring system (GAMS) for the determination of acidic water soluble organic and inorganic gases and ammonia as well as related particles from the atmosphere
Autore:
Loflund, M; Kasper-Giebl, A; Tscherwenka, W; Schmid, M; Giebl, H; Hitzenberger, R; Reischl, G; Puxbaum, H;
Indirizzi:
Vienna Univ Technol, Inst Analyt Chem, A-1060 Vienna, Austria Vienna Univ Technol Vienna Austria A-1060 t Chem, A-1060 Vienna, Austria Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria Univ Vienna Vienna Austria A-1090 Inst Expt Phys, A-1090 Vienna, Austria
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 16, volume: 35, anno: 2001,
pagine: 2861 - 2869
SICI:
1352-2310(200106)35:16<2861:TPOAGA>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ION CHROMATOGRAPHY SYSTEMS; PARALLEL-PLATE DENUDERS; DIFFUSION DENUDER; WET; HNO3; AIR; NOY; HCL; SO2;
Keywords:
aerosol analysis; gas analysis; continuous monitoring; carboxylic acids; phase partitioning of atmospheric substances;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Kasper-Giebl, A Vienna Univ Technol, Inst Analyt Chem, Getreidemarkt 9-151, A-1060 Vienna,Austria Vienna Univ Technol Getreidemarkt 9-151 Vienna Austria A-1060
Citazione:
M. Loflund et al., "The performance of a gas and aerosol monitoring system (GAMS) for the determination of acidic water soluble organic and inorganic gases and ammonia as well as related particles from the atmosphere", ATMOS ENVIR, 35(16), 2001, pp. 2861-2869

Abstract

A new application of the quasi-simultaneous gas/particle phase sampling and analysis principle first proposed by Simon and Dasgupta (Anal. Chem. 34 (1995) 71) is described. For the first time, a gradient chromatograph is used in connection with such a sampling system to allow the simultaneous determination of major organic (formic, acetic, propionic, oxalic, malonic and succinic) and inorganic (SO2, HNO2, HNO3, HCl and H2F2) acidic gases and related particles. Another addition to the previous systems is the analysis ofcations other than ammonium from the particulate phase. The time resolution of the instrument still remains high, Ih, during which gaseous water-soluble acidic compounds, ammonia, as well as related anionic particles and inorganic major cations are analysed. Sampling is based on diffusion in a wetted parallel plate denuder for gases and on growth in supersaturated water vapour for particles. The determination limits range from 2 ppt (acetate) to0.4 ppb (ammonia) in the gas phase and 0.01 mum(-3) (citric acid) to 0.79 mum(-3) (calcium) for particulate matter. Collection efficiencies for gas and aerosol sampling were quantified and the supersaturation in the aerosol sampling apparatus investigated. The system has been used for field measurements at a background station; selected results of these measurements are presented. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:30:05