Main Title |
Collaborative study of EPA method 13A and method 13B / |
Author |
Mitchell, William J. ;
Suggs, Jack C. ;
Bergman., Fred J.
|
Other Authors |
|
CORP Author |
Environmental Monitoring and Support Lab., Research Triangle Park, N.C. ;Midwest Research Inst., Kansas City, Mo. |
Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory, |
Year Published |
1977 |
Report Number |
EPA-600/4-77-050 |
Stock Number |
PB-278 849 |
OCLC Number |
52753013 |
Subjects |
Aluminum plants--Sampling ;
Air--Pollution--Sampling
|
Additional Subjects |
Gas analysis ;
Fluorides ;
Industrial wastes ;
Fertilizers ;
Aluminum ;
Inorganic phosphates ;
Combustion products ;
Sampling ;
Laboratory equipment ;
Design criteria ;
Performance evaluation ;
Statistical analysis ;
Calibrating ;
EPA method 13A ;
EPA method 13B ;
Air pollution detection ;
Collaborative tests
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-77-050 |
|
Headquarters Library/Washington,DC |
12/02/2015 |
EKBD |
EPA-600/4-77-050 |
|
Research Triangle Park Library/RTP, NC |
08/01/2003 |
ELBD ARCHIVE |
EPA 600-4-77-050 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
NTIS |
PB-278 849 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
1 v. (various pagings) : ill. ; 28 cm. |
Abstract |
The results from a collaborative test of U.S. EPA Method 13A and 13B are presented. The collaborative test was conducted at a primary aluminum reduction plant. In the collaborative test, six laboratories each operated two Method 13 sampling trains and all laboratories simultaneously sampled the same stack. Ten such sampling runs were done for a total of 120 samples. Each source sample was analyzed for fluoride using both Method 13A and Method 13B. The results of the collaborative test showed that both test methods gave similar results. |
Notes |
"December 1977." "EPA-600/4-77-050." |
Contents Notes |
Described are the results from a collaborative test of U.S. Environmental Protection AGency Method 13 at a primary aluminum plant. This test method is used to measure the fluoride emissions from primary aluminum plants and phosphate fertilizer plants. In the collaborative test, six laboratories simultaneously sample the same stack using two Method 12 sampling trains for a total of twelve Method 13 samples per sampling run. Ten such sampling runs were accomplished for a total of 120 samples. Each source sample was analyzed for fluoride content using Method 13A (SPANDNS spectrophotometric procedure) and Method 13B (ion selective electrode procedure). Te collaborative test results showed that the two methods gave similar results. The within-laboratory standard deviation in milligrams fluoride per cubic meter for Method 13A was 0.044 and for Method 13B was 0.037. Similarly, the between-laboratory standard deviation for Method 13A was 0.064 and for Method 13B was 0.056. These estimates include sampling and analysis error. Based on the analysis of aqueous fluoride samples by each collaborator, the bias in milligrams of fluoride per liter was -0.08 for Method 13A and -0.10 for Method 13A. Also presented in the report are precision estimates for the two methods in terms of repeatability and reproducibility. A discussion of how to use these collaborative test results for evaluating source testing results is also given. |