Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effect of Sampling Temperature, Filter Material, and Sample Treatment on Combustion Source Emission Test Results.
Author Mitchell, W. J. ; Bruffey, C. L. ;
CORP Author Environmental Monitoring Systems Lab., Research Triangle Park, NC. Quality Assurance Div. ;PEDCo-Environmental, Inc., Cincinnati, OH.
Year Published 1984
Report Number EPA/600/J-84/136;
Stock Number PB85-124550
Additional Subjects Air pollution control equipment ; Scrubbers ; Electrostatic precipitators ; Industrial wastes ; Combustion products ; Sulfuric acid ; Sulfur dioxide ; Particles ; Sites ; Sampling ; Reprints ; Coal fired power plants ; Air pollution sampling ; EPA method 8 ; EPA method 5
Library Call Number Additional Info Location Last
NTIS  PB85-124550 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 8p
Particulate testing was performed at scrubber-equipped and ESP-equipped, coalfired power plants. The particulate collecting portion of each train was followed by an EPA Method 8 train to determine the amount of sulfuric acid mist and sulfur dioxide that passed through the particulate filter. Significant quantities of a volatile sulfate were found in the Method 5 particulate sample even when the probe and filter were maintained at a temperature 30 C above the acid dewpoint. It was also found that: (1) Heating the collected sample at temperatures above the sampling temperature would effectively remove this material from the ESP-equipped plant samples, but not from the scrubber-equipped plant samples; (2) At the ESP-equipped plant, the Alundum thimble particulate results were equivalent to Method 5, but at the scrubber-equipped plant were considerably higher; (3) At both sources, borosilicate glass-fiber thimble filters gave average particulate results that were considerably higher than Method 5 and would not release most of this excess weight when heated to 316 C; and (4) A combination Method 5/Method 8 train cannot be used to simultaneously measure particulate and sulfuric acid at these sources unless the probe and filter are operated at a temperature much higher than the 160 C now specified by regulation.