| 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 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| 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. |
