Reactions Involving Ozone, Nitrogen Dioxide, and Organic Compounds at Low Concentrations in Air
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چکیده
منابع مشابه
Nitrous acid, nitrogen dioxide, and ozone concentrations in residential environments.
Nitrous acid (HONO) may be generated by heterogeneous reactions of nitrogen dioxide and direct emission from combustion sources. Interactions among nitrogen oxides and ozone are important for outdoor photochemical reactions. However, little is known of indoor HONO levels or the relationship between residential HONO, NO(2), and O(3) concentrations in occupied houses. Six-day integrated indoor an...
متن کاملPhotochemical ozone and nitric oxide formation in air--nitrogen dioxide mixtures containing sulfur dioxide or chlorine.
Experiments were performed to investigate the effects of sulfur dioxide (O-10 ppm) and chlorine (O-15 ppm) on ozone and nitric oxide concentrations in irradiated mixtures of nitrogen dioxide (1-5 ppm) and air. The mixtures were irradiated by ultraviolet fluorescent lamps while flowing at a steady speed through a 9 m long, 15.2 cm i.d. Pyrex tube. The presence of sulfur dioxide produced no measu...
متن کاملWHO Air quality guidelines for particulate matter, ozone, nitrogen dioxide and sulfur dioxide
e-mail: [email protected]). Requests for permission to reproduce or translate WHO publications – whether for sale or for noncommercial distribution – should be addressed to WHO Press, at the above address (fax: +41 22 791 4806; e-mail: [email protected]). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever o...
متن کاملCombined exposure to ozone and nitrogen dioxide.
The combined effects of ozone and nitrogen dioxide were assessed in an in vitro test system utilizing human red cells. In general, these two pollutants had additive effects on the parameters measured which included osmotic fragility, acetylcholinesterase activity, lipid peroxidation, reduced glutathione and methemoglobin levels. However, at lower pollutant doses a synergistic increase in lipid ...
متن کاملIndoor air distribution of nitrogen dioxide and ozone in urban hospitals.
Indoor air pollution has recently become a public concern in Taiwan. People recognize that indoor air quality (IAQ) may be more important than outdoor air quality because they spend over 80% of their time indoors. IAQ could affect health and comfort of building occupants. The objectives of this study are (1) to characterize the indoor concentrations of selected air pollutants at two hospitals i...
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ژورنال
عنوان ژورنال: Journal of the Air Pollution Control Association
سال: 1956
ISSN: 0002-2470
DOI: 10.1080/00966665.1956.10467714