Record Display for the EPA National Library Catalog


Main Title Determination of rates of reaction in the gas-phase in the troposphere : theory and practice /
Author Leifer, Asa,
CORP Author Environmental Protection Agency, Washington, DC. Office of Toxic Substances.
Publisher U.S. Environmental Protection Agency, Office of Toxic Substances,
Year Published 1989
Report Number EPA 560/5-89-007
Stock Number PB90-146291
OCLC Number 41416797
Subjects Tropospheric chemistry--Mathematical models ; Hydroxyl group--Environmental effects ; Air--Pollution--Mathematical models
Additional Subjects Troposphere ; Photochemical reactions ; Reaction kinetics ; Air pollution ; Solar radiation ; Spectrum analysis ; Guidelines ; Cross sections ; Gases ; Cost effectiveness ; Toxic Substance Control Act
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD ARCHIVE EPA 560-5-89-007 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB90-146291 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 48 pages ; 28 cm
The report describes in detail a simple and cost-effective screening test for estimating an environmentally relevant maximum rate constant and minimum half-life for direct photoreaction of a chemical in the gas-phase in the troposphere. The report discusses the theory and development of the screening test and describes detailed procedures for measuring the cross section of a chemical in the gas-phase in the laboratory by spectroscopic techniques and data reporting for sections 4 and 5 of TSCA (Toxic Substance and Control Act.) Tables of solar irradiance (J(sub lambda)) are given from 0 degrees to 70 degrees North latitude in 10 degree increments as a function of season of the year to cover the continental United States and other parts of the U.S., such as Alaska and Hawaii. An example is given to illustrate the use of the experimental cross section data and solar irradiance data (J(sub lambda)) to estimate the maximum rate of direct photoreaction (kdE)max and the minimum half-life (t(sub 1/2 E) (sub/min).
"EPA 560/5-89-007." Includes bibliographical references. "Rate of indirect photoreaction: screening-level test guideline [section] 796.3800. Labooratory spectroscopic determination of the cross section and the maximum rate of direct photoreaction in sunlight."