Record Display for the EPA National Library Catalog

RECORD NUMBER: 3 OF 3

OLS Field Name OLS Field Data
Main Title Sulfamic Acid Modification of the Winkler Method for Dissolved Oxygen.
Author Cohe, Stuart ; Ruchhof, C. C. ;
CORP Author Public Health Service, Cincinnati, Ohio. Stream Pollution Investigations Station.
Year Published 1941
Stock Number PB-215 051
Additional Subjects ( Dissolved gases ; Water analysis) ; Oxygen ; Nitrites ; Errors ; Sulfamic acids ; Winkler analysis ; Water pollution detection
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-215 051 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 15p
Abstract
A modified Winkler procedure employing a solution of 4 percent sulfamic acid in 20 percent sulfuric acid as a preliminary treatment for the removal of nitrites in the dissolved oxygen determination has been presented. It has been shown that this procedure is as satisfactory as the azide modification for the determination of dissolved oxygen and biochemical oxygen demand in sewage treatment and river pollution studies. The two modifications, azide and sulfamic acid, were compared and appear to have equal value in the prevention of biochmeical oxidation when it is necessary to store a dissolved oxygen sample for a short time. (Author)