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RECORD NUMBER: 30 OF 46

OLS Field Name OLS Field Data
Main Title Nitrogen dioxide, time-concentration model to predict acute foliar injury /
Author Heck, Walter Webb, ; Tingey, David T.
Other Authors
Author Title of a Work
Tingey, David T.
CORP Author Corvallis Environmental Research Lab., OR. ;North Carolina State Univ. at Raleigh. Dept. of Botany.
Publisher Environmental Protection Agency, Office of Research and Development [Office of Air, Land, and Water Use], Corvallis Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1979
Report Number EPA/600/3-79/057
Stock Number PB-299 218
Subjects Nitrogen compounds--Environmental aspects. ; Plants--Effect of gases on.
Additional Subjects Nitrogen dioxide ; Toxicology ; Nitrogen inorganic compounds ; Time ; Concentration(Composition) ; Experimental design ; Injuries ; Plants(Botany) ; Vegetation ; Models ; Toxic substances ; Air pollution effects(Plants)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-299 218 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vi, 17 pages ; 28 cm.
Abstract
An experimental design was developed utilizing five time periods from 0.5 to 7 hours with two nitrogen dioxide concentrations at each time period. Concentrations were chosen that would produce threshold and severe injury at these time periods. From these data for each plant species, an equation was developed utilizing concentration as the dependent variable, and both foliar injury and time as independent variables. The model allows for the development of a three-dimensional response surface within the limits of the times and concentrations used. The model should be of practical importance in predicting the concentration of nitrogen dioxide that will produce a given amount of injury to a specific crop during a single 12-hour day. Research to date suggests the model may be used for other pollutants and for other plant species that show injury following exposure to high ambient nitrogen dioxide concentrations.
Notes
May 1979. Includes bibliographical references (pages 9-10). Microfiche.