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January 24, 2010 | History

Heterogeneous uptake of atmospheric organic gas phase species by condensed organic film substrates: A low-pressure effusive cell study 1 edition

Heterogeneous uptake of atmospheric organic gas phase species by conde ...
Srimoyee Ray Chaudhuri

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Heterogeneous uptake of atmospheric organic gas phase species by condensed organic film substrates: A low-pressure effusive cell study.

Published 2006 .
Written in English.

About the Book

The role of organic matter in heterogeneous atmospheric processes is of emerging significance. Recently the presence of films composed of a diverse organic fraction has been confirmed on impervious urban surfaces. These films can potentially sequester and react with atmospheric constituents affecting the fate of semi-volatile organic species. Organic coatings have also been confirmed on aerosols, whose composition affects their chemical and optical properties. A low-pressure effusive (Knudsen) cell reactor was designed and constructed to study uptake of organic gases with organic film proxies (oleic acid and squalene). Uptake probabilities, found to be an indicator of mass accommodation coefficient, were on the order of high 10-3 for naphthalene and chlorinated aromatics and less than 10-4 for p-xylene, alpha-pinene and acetic acid at ambient temperature. Uptake qualitatively corresponded to the octanol-air partition coefficient of gases. Preliminary results estimate a film-air partition coefficient for naphthalene in oleic acid of roughly 1.2x104.

Edition Notes

Source: Masters Abstracts International, Volume: 44-06, page: 2807.

Advisor: D. James Donaldson

Thesis (M.Sc.)--University of Toronto, 2006.

Electronic version licensed for access by U. of T. users.

ROBARTS MICROTEXT copy on microfiche.

The Physical Object

Pagination
xi, 97 leaves.
Number of pages
97

ID Numbers

Open Library
OL19214709M
ISBN 13
9780494160862
OCLC/WorldCat
225609392

History

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January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page