Record Display for the EPA National Library Catalog


Main Title Measurements of Residual Chlorine Levels in Cooling Water. Amperometric Method.
Author Manabe., Ronald M. ;
CORP Author National Environmental Research Center, Corvallis, Oreg.
Year Published 1974
Report Number EPA-ROAP-21AZU-23; EPA/660/2-74-039;
Stock Number PB-238 780
Additional Subjects Cooling water ; Chlorine ; Water analysis ; Cooling towers ; Chlorination ; Cooling systems ; Quantitative analysis ; Errors ; Electrical measurement ; Amperometry
Library Call Number Additional Info Location Last
NTIS  PB-238 780 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 54p
The report is concerned with modification of the amperometric titration method for chlorine residuals in cooling tower blowdowns or other water systems with a high degree of metal ion content along with other dissolved and suspended solids. The addition of sodium pyrophosphate as a blanket complexing agent appears to remove successfully the heavy metals interferences contributed by Fe and Cu in the blowdown matrix. Procedure recommendations are made to increase the efficiency of both sampling and the actual titration procedure in order to allow a residual determination in the minimum amount of time. Equipment recommendations along with a design of a biamperometric endpoint system which allows greater titration speed along with portability are described.