Record Display for the EPA National Library Catalog

RECORD NUMBER: 177 OF 5260

OLS Field Name OLS Field Data
Main Title Adequacy of Sampling Trains and Analytical Procedures Used for Fluoride.
Author Mitchell, William James ; Midgett., Rodney ;
CORP Author Environmental Monitoring and Support Lab., Research Triangle Park, N.C. Quality Assurance Branch.
Year Published 1976
Report Number EPA/600/J-76/046;
Stock Number PB-266 315
Additional Subjects Fluorides ; Aluminum ; Phosphoric acids ; Industrial wastes ; Combustion products ; Distillation ; Sampling ; Sulfuric acid ; Perchloric acid ; Chemical analysis ; Air pollution ; Fertilizers ; Experimental design ; Electrodes ; Efficiency ; Gas analysis ; Laboratory equipment ; Concentration(Composition) ; Stationary sources ; Ion selective electrodes ; Wet methods ; Procedures ; Air pollution detection ; Reprints
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-266 315 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 10p
Abstract
Liquid nitrogen-cooled cold-traps were used to establish the collection efficiency for fluorides of two different source sampling trains at primary aluminum reduction plants and wet-process phosphoric acid plants. It was found that the glass frit filter support commonly used in stationary source sampling trains retained fluoride during sampling; therefore, the filter should not be placed before the impingers when sampling for fluoride. Also described are the results of a collaborative test on two standard distillation procedures for fluorides; sulfuric acid distillation and steam distillation from perchloric acid. The results show that the predominant source of imprecision in both methods is the distillation step itself.