Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog

M. C. Facchini; S. Fuzzi; J. A. Lind; H. Fierlinger-Oberlinninger; M. Kalina; H. Puxbaum; W. Winiwarter; B. G. Arends; W. Wobrock; W. Jaeschke; A. Berner; C. Kruisz

doi:10.3402/tellusb.v44i5.15566

Phase-partitioning and chemical reactions of low molecular weight organic compounds in fog

Tellus B: Chemical and Physical Meteorology

Volume 44 (1992): Issue 5

By: M. C. Facchini, S. Fuzzi, J. A. Lind, H. Fierlinger-Oberlinninger, M. Kalina, H. Puxbaum, W. Winiwarter, B. G. Arends, W. Wobrock, W. Jaeschke, A. Berner and C. Kruisz

Open Access

|Jan 1992

Abstract

Concurrent gas and fog water measurements of formic, acetic and pyruvic acids and formaldehyde carried out during the Po Valley Fog Experiment 1989 are presented. The reaction between HCHO and S(IV) in fog water solution to form HMSA was studied. The effect of HMSA formation was found to increase HCHO solubility in fog water up to 100 times. 95% on average of HCHO is present as HMSA in fog water samples with pH > 4.5. At lower pH values, HMSA formation is limited by the availability of S(IV) in solution. A common feature of HCOOH, CH₃ COOH and HCHO gas/liquid distribution is represented by the large departures from theoretical predictions when fog water pH is in the region where a large fraction of these compounds is partitioned into the liquid phase. A limitation in mass transport across the air/droplet interface is a likely explanation for this behaviour.

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Articles in this issue

DOI: https://doi.org/10.3402/tellusb.v44i5.15566 | Journal eISSN: 1600-0889

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Language: English

Page range: 533 - 544

Submitted on: Nov 28, 1991

Accepted on: Jun 1, 1992

Published on: Jan 1, 1992

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1992 M. C. Facchini, S. Fuzzi, J. A. Lind, H. Fierlinger-Oberlinninger, M. Kalina, H. Puxbaum, W. Winiwarter, B. G. Arends, W. Wobrock, W. Jaeschke, A. Berner, C. Kruisz, published by Stockholm University Press
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Volume 44 (1992): Issue 5