Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effect of Holding Temperature and Time on Total Coliform Density in Sewage Effluent Samples.
Author Davenport, Charlotte V. ; Gordon., Ronald C. ;
CORP Author Corvallis Environmental Research Lab., College, Alaska. Arctic Environmental Research Station.
Year Published 1978
Report Number AERS/WP-31 ;CERL-041;
Stock Number PB-284 453
Additional Subjects Rivers ; Coliform bacteria ; Sampling ; Water pollution ; Storage ; Potable water ; Abundance ; Microorganisms ; Temperature ; Refrigerating ; Dilution ; Growth ; Sewage ; Outfall sewers ; Density(Mass/volume) ;
Library Call Number Additional Info Location Last
NTIS  PB-284 453 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 19p
Over the years, a variety of temperature and storage conditions have been recommended as a means of maintaining sample integrity when immediate coliform analysis was not possible. These recommendations were developed, in large part, from analysis of drinking water samples which usually have a low coliform and nutrient content. However, in river water samples with high (i.e. 100,000/100 ml) initial coliform densities showed that the population tended to increase, at both refrigeration (2-6C) and room temperatures (23-27C), when analyzed after 6, 12, and 30 hours of storage. It was found that the coliform population increases in the room temperature samples to be more than double those observed for the refrigerated samples.