Simultaneous measurements of formaldehyde and nitrous acid in dews and gas phase in the atmosphere of Santiago, Chile

The amounts of formaldehyde and nitrous acid (HONO) in gas phase and dews of Santiago de Chile were simultaneously measured. Formaldehyde concentrations values in the liquid phase (dews) correlate fairly well with those in the gaseous phase and are even higher than those expected from gas–dew equili...

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Published in:Atmospheric environment (1994) 2009-12, Vol.43 (38), p.6106-6109
Main Authors: Rubio, María A., Lissi, Eduardo, Villena, Guillermo, Elshorbany, Y.F., Kleffmann, Jörg, Kurtenbach, Ralf, Wiesen, Peter
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheric pollution
Dews
Earth, ocean, space
Exact sciences and technology
External geophysics
Formaldehyde
Henry's constant
Meteorology
Nitrous acid
Pollution
Santiago de Chile
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container_end_page 6109
container_issue 38
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container_title Atmospheric environment (1994)
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creator Rubio, María A.
Lissi, Eduardo
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description The amounts of formaldehyde and nitrous acid (HONO) in gas phase and dews of Santiago de Chile were simultaneously measured. Formaldehyde concentrations values in the liquid phase (dews) correlate fairly well with those in the gaseous phase and are even higher than those expected from gas–dew equilibrium. On the other hand, nitrite concentrations in dews were considerably smaller (ca. 15 times) than those expected from the gas-phase concentrations. This under-saturation is attributed to diffusion limitations due to the relatively large HONO solubility. In agreement with this, under-saturation increases with the rate of dew formation and the pH of the collected waters, factors that should increase the rate of gas to liquid HONO transfer required to reach equilibrium.
doi_str_mv 10.1016/j.atmosenv.2009.09.017
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source ScienceDirect Journals
subjects Applied sciences
Atmospheric pollution
Dews
Earth, ocean, space
Exact sciences and technology
External geophysics
Formaldehyde
Henry's constant
Meteorology
Nitrous acid
Pollution
Santiago de Chile
title Simultaneous measurements of formaldehyde and nitrous acid in dews and gas phase in the atmosphere of Santiago, Chile
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