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Main Title Environmental pathways of selected chemicals in freshwater systems /
Author Smith, John H. ; Mabey, W. R. ; Bohonos, N. ; Holt, B. R. ; Lee., S. S. ; Smith, J. H.
Other Authors
Author Title of a Work
Smith, John H.
CORP Author United States. Environmental Protection Agency. Office of Research and Development.; Environmental Research Laboratory (Athens, Ga.); SRI International, Menlo Park, Calif.; Environmental Research Lab., Athens, Ga.
Publisher Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1977
Report Number EPA-600/7-78-074; EPA/600/7-77/113; EPA-68-03-2227; PB274548
Stock Number PB-274 548
OCLC Number 04848175
Subjects Fresh water--Analysis ; Water--Pollution--Mathematical models ; Hydrolysis ; Photochemistry
Additional Subjects Fresh water--Analysis ; Water--Pollution--Mathematical models ; Hydrolysis ; Photochemistry ; Chemical compounds ; Water analysis ; Chemical analysis ; Sediments ; Mathematical models ; Physical properties ; Sorption ; Organic compounds ; Free radicals ; Oxidation ; Desorption ; Biodeterioration ; Volatility ; Path of pollutants ; Water pollution detection ; Procedures
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  QD142.E58 Region 1 Library/Boston,MA 04/29/2016
EKCD  EPA-600/7-77-113 CEMM/GEMMD Library/Gulf Breeze,FL 08/21/2018
ELBD ARCHIVE EPA 600-7-77-113 pt. 1 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-7-77-113 repository copy, Part I AWBERC Library/Cincinnati,OH 04/24/2020
ELBD ARCHIVE EPA 600-7-78-074 pt.2 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-7-77-113 Part I Region 10 Library/Seattle,WA 01/23/2017
ESAD  EPA 600-7-78-074 Part II Region 10 Library/Seattle,WA 01/23/2017
NTIS  PB-274 548 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 2 volumes : illustrations ; 28 cm.
This research was initiated to develop environmental exposure assessment procedures that can be used to predict the pathways of potentially harmful chemicals in freshwater environments. The approach is based on three premises: (1) the overall rate of disappearance of a chemical from the aquatic environment is controlled only by the dominant transformation and transport processes, (2) these processes can be studied independently in the laboratory, and (3) the laboratory data can be extrapolated to environmental conditions. Laboratory procedures have been developed for measuring the rates of volatilization, photolysis, oxidation, hydrolysis, and biotransformation as well as the sorption partition coefficients on natural sediments and on a mixture of four bacteria. Two models have been used to extrapolate the laboratory results to the environment. The one-compartment model assumes that the aquatic system is a single well-mixed reactor from which chemicals are transformed, degraded, and/or transported. It can be used to analyze acute discharges such as spills and to establish priorities for in-depth laboratory studies. The nine-compartment computer model is used to study the effect of transport and transformation processes studied in the laboratory on the distribution of a chemical in ponds, streams, and eutrophic and oligotrophic lakes. Part II of this report describes the application of these procedures to environmental assessment to the distribution and fate of eleven organic compounds.
Contract no. 68-03-2227. V. 1 issued October 1977 ; v. 2 issued May 1978. Includes bibliographical references.
Contents Notes
pt. 1. Background and experimental procedures.--pt. 2. Laboratory studies.