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Title: Hydroxyl and hydroperoxyl radicals: Their role in smog photochemistry and their atmospheric measurement

Abstract

A simple chemical model is sufficient to roughly quantify the role of hydroxyl and hydroperoxyl radicals in the formation of ozone from photooxidation of hydrocarbons and oxides of nitrogen: (1) HC + HO {yields} {sup k{sub 1}} P + a HO{sub 2}; (2) P + HO {yields} {sup k{sub 2}} b HO{sub 2}; (3) HO{sub 2} + NO {yields} NO{sub 2} + HO; (4) NO{sub 2} + hv {yields} {sup O{sub 2}} NO + O{sub 3} (5) NO + O{sub 3} {yields} NO{sub 2} + O{sub 2}; (6) everything {yields}{sup k{sub d}} dilution. Here HC is any hydrocarbon and a and b are effective stoichiometric coefficients which describe the number of peroxy radicals formed in the oxidation of the individual hydrocarbon and of its lumped oxidation product, P. Peroxy radicals RO{sub 2} and HO{sub 2} are interchangable in this model. The authors have begun a program of characterizing the hydroxyl and hydroperoxyl radical concentrations in polluted and clean air using their FAGE technique. Data obtained in downtown Portland, Oregon, are shown. Additional data will be presented at the meeting and compared with the predictions of a wider complement of photochemical models.

Authors:
; ; ; ; ;  [1]
  1. Portland State Univ., OR (USA)
Publication Date:
OSTI Identifier:
7166226
Report Number(s):
CONF-8909232-
Journal ID: ISSN 0099-7293; CODEN: ACWCA
Resource Type:
Conference
Journal Name:
Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA)
Additional Journal Information:
Journal Volume: 28:2; Conference: 8. Japan - United States Governmental conference on solid waste management, Honolulu, HI (USA), 6-7 Sep 1989; Journal ID: ISSN 0099-7293
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; HYDROPEROXY RADICALS; AIR POLLUTION MONITORING; ATMOSPHERIC CHEMISTRY; HYDROXYL RADICALS; OZONE; ECOLOGICAL CONCENTRATION; AIR POLLUTION; MATHEMATICAL MODELS; MEASURING METHODS; OREGON; PHOTOCHEMISTRY; SMOG; CHEMISTRY; FEDERAL REGION X; NORTH AMERICA; POLLUTION; RADICALS; USA; 540120* - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-)

Citation Formats

O'Brien, R J, Theisen, J W, Pan, W H, Hard, T M, Chan, C Y, and Mehrabzadeh, A A. Hydroxyl and hydroperoxyl radicals: Their role in smog photochemistry and their atmospheric measurement. United States: N. p., 1988. Web.
O'Brien, R J, Theisen, J W, Pan, W H, Hard, T M, Chan, C Y, & Mehrabzadeh, A A. Hydroxyl and hydroperoxyl radicals: Their role in smog photochemistry and their atmospheric measurement. United States.
O'Brien, R J, Theisen, J W, Pan, W H, Hard, T M, Chan, C Y, and Mehrabzadeh, A A. 1988. "Hydroxyl and hydroperoxyl radicals: Their role in smog photochemistry and their atmospheric measurement". United States.
@article{osti_7166226,
title = {Hydroxyl and hydroperoxyl radicals: Their role in smog photochemistry and their atmospheric measurement},
author = {O'Brien, R J and Theisen, J W and Pan, W H and Hard, T M and Chan, C Y and Mehrabzadeh, A A},
abstractNote = {A simple chemical model is sufficient to roughly quantify the role of hydroxyl and hydroperoxyl radicals in the formation of ozone from photooxidation of hydrocarbons and oxides of nitrogen: (1) HC + HO {yields} {sup k{sub 1}} P + a HO{sub 2}; (2) P + HO {yields} {sup k{sub 2}} b HO{sub 2}; (3) HO{sub 2} + NO {yields} NO{sub 2} + HO; (4) NO{sub 2} + hv {yields} {sup O{sub 2}} NO + O{sub 3} (5) NO + O{sub 3} {yields} NO{sub 2} + O{sub 2}; (6) everything {yields}{sup k{sub d}} dilution. Here HC is any hydrocarbon and a and b are effective stoichiometric coefficients which describe the number of peroxy radicals formed in the oxidation of the individual hydrocarbon and of its lumped oxidation product, P. Peroxy radicals RO{sub 2} and HO{sub 2} are interchangable in this model. The authors have begun a program of characterizing the hydroxyl and hydroperoxyl radical concentrations in polluted and clean air using their FAGE technique. Data obtained in downtown Portland, Oregon, are shown. Additional data will be presented at the meeting and compared with the predictions of a wider complement of photochemical models.},
doi = {},
url = {https://www.osti.gov/biblio/7166226}, journal = {Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA)},
issn = {0099-7293},
number = ,
volume = 28:2,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 1988},
month = {Thu Sep 01 00:00:00 EDT 1988}
}

Conference:
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