Study on the chemical character of water soluble organic compounds in fine atmospheric aerosol at the Jungfraujoch

In this study the chemical nature of the bulk of water soluble organic compounds in fine atmospheric aerosol collected during summer 1998 at the Jungfraujoch, Switzerland (3580 m asl) is characterised. The mass concentration of water soluble organic substances was similar to those of major inorganic ions, and the water soluble organic matter was found to be composed of two main fractions: (i) highly polyconjugated, acidic compounds with a varying degree of hydrophobicity and (ii) slightly polyconjugated, neutral and very hydrophilic compounds. The contribution of both fractions to the total water soluble organic carbon was about 50%. Separation into individual components was impossible either by HPLC or capillary electrophoresis which indicates the presence of a high number of chemically similar but not identical species. Results obtained by ultrafiltration and HPLC-MS have shown that the molecular weights are of the order of several hundreds. Most of the protonation constants for the acidic compounds determined by capillary electrophoresis were in the range 10⁴-10⁷.

Schlagwörter

Fachgebiet (DDC)

550 - Geowissenschaften
540 - Chemie

Projekt

Veranstaltung

Startdatum der Ausstellung

Enddatum der Ausstellung

Startdatum der Konferenz

Enddatum der Konferenz

Datum der letzten Prüfung

ISBN

ISSN

0167-7764
1573-0662

Sprache

Englisch

Während FHNW Zugehörigkeit erstellt

Nein

Zukunftsfelder FHNW

Publikationsstatus

Veröffentlicht

Begutachtung

Peer-Review der ganzen Publikation

Open Access-Status

Closed

Lizenz

Zitation

KRIVÁCSY, Zoltán, András GELENCSÉR, Gyula KISS, Ernő MÉSZÁROS, Ágnes MOLNÁR, András HOFFER, Tamás MÉSZÁROS, Zsolt SÁRVÁRI, Dóra TEMESI, Bálint VARGA, Urs BALTENSPERGER, Stephan NYEKI und Ernest WEINGARTNER, 2001. Study on the chemical character of water soluble organic compounds in fine atmospheric aerosol at the Jungfraujoch. Journal of Atmospheric Chemistry. Juli 2001. Bd. 39, S. 235–259. DOI 10.1023/a:1010637003083. Verfügbar unter: https://irf.fhnw.ch/handle/11654/46890

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