Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Virus sensitivity to chlorine disinfection of water supplies /
Author Engelbrecht, Richard S. ; Weber, Michael J. ; Schmidt, Carla A. ; Salter, Brenda L.
Other Authors
Author Title of a Work
Engelbrecht, Richard S.
CORP Author Illinois Univ. at Urbana-Champaign. Dept. of Civil Engineering.;Municipal Environmental Research Lab., Cincinnati, OH.
Publisher Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA/600/2-78/123; EPA-R-803346
Stock Number PB-288 510
Subjects Chlorine and derivatives as disinfectants. ; Disinfection and disinfectants. ; Virology--Research.
Additional Subjects Viruses ; Disinfection ; Chlorination ; Sensitivity ; Potable water ; Efficiency ; Sterlization ; Water treatment ; Enteroviruses ; pH ; Polioviruses ; Coxsackie viruses ; ECHO viruses ; Water pollution ; Temperature ; Genetics ; Picornaviruses ; Drinking water
Library Call Number Additional Info Location Last
NTIS  PB-288 510 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 viii, 44 pages : illustrations ; 28 cm.
The efficiency of chlorine disinfection of viruses is likely to be affected both by the type of virus and by the nature of the suspending medium. The purpose of this study was to examine the effects of virus type, suspending medium and the interaction of these, on the kinetics of inactivation by chlorine. Six enteric viruses (picornaviruses) as well as SV40 and Kilham rat virus were studied under carefully controlled laboratory conditions. It was found that the different virus types showed a wide range of sensitivity to chlorine disinfection. The rate of inactivation was greater at pH 6 than at pH 10; however, the relative sensitivities of the different viruses were affected differently by changes in pH. This indicates an effect of pH both on the species of chlorine and on the sensitivity of the virus. The presence of dissolved ions also had an effect on sensitivity to chlorine. The possible effects of virus aggregation and the appearance of chlorine resistant mutants were investigated as well. The results indicate that it will be difficult to obtain a single virus type which will serve as a suitable indicator of disinfection under all circumstances.
Grant EPA R-803-346. Issued Aug. 1978. Includes bibliographical references (pages 42-43). Microfiche.