Record Display for the EPA National Library Catalog


Main Title Automatic Determination of Sulfates by an Improved Nephelometric Method. Application to the Determination of SO2 in the Ambient Air and of Sulfates in Rainwater (Dosage Automatique des Sulfates par un Methode Nephelometrique Amelioree. Application au Dosage du SO2 dans l'Air Ambiant et des Sulfates dans les Eaux de Pluie).
Author Verduyn, Geert ; Derouane., Alain ;
CORP Author Environmental Protection Agency, Research Triangle Park, N.C. Translation Services Section.
Year Published 1974
Report Number EPA-TR-75-89;
Stock Number PB-252 743-T
Additional Subjects Chemical analysis ; Sulfur dioxide ; Sulfates ; Water analysis ; Nephelometers ; Water pollution ; Air pollution ; Laboratory equipment ; Design criteria ; Translations ; France ; Gas analysis ; Rain ; Technicon auto analyzers ; Water pollution detection ; Air pollution detection
Library Call Number Additional Info Location Last
NTIS  PB-252 743-T Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 17p
An automatic nephelometric method for the determination of low concentrations of sulfate is described. It permits the determination of concentrations as low as 0.1 micro gram/cu cm. The sulfate ions are precipitated by means of barium perchlorate. Fifty samples can be analyzed per hour. This method was developed for the determination of sulfur dioxide in air after absorption in diluted hydrogen peroxide. It is also applicable to the determination of sulfate amounts in rainwater. The equipment used is the Technicon Auto Analyzer connected with a two-monochromator spectrofluorimeter. This can be used in sampling for air and water pollution.