| Main Title |
Measurement of atmospheric sulfates : evaluation of the methylthymol blue method / |
| Author |
Bergman, Fred J. ;
Sharp., Michael C.
|
| Other Authors |
|
| CORP Author |
Midwest Research Inst., Kansas City, Mo.;Environmental Monitoring and Support Lab., Research Triangle Park, N.C. Environmental Monitoring Branch. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory, |
| Year Published |
1976 |
| Report Number |
EPA-600/4-76-015; EMSL/RTP No.7; EPA-68-02-1728 |
| Stock Number |
PB-253 349 |
| OCLC Number |
52753239 |
| Additional Subjects |
Sulfates ;
Chemical analysis ;
Filtration ;
Least squares methods ;
Air pollution ;
Tests ;
Concentration(Composition) ;
Ion exchangers ;
Wavelengths ;
Stability ;
Sodium ;
Salts ;
Air pollution detection ;
Methylthymol blue method
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD ARCHIVE |
EPA-600-4-76-015 |
|
Headquarters Library/Washington,DC |
03/31/2014 |
| EJBD |
EPA-600-4-76-015 |
|
Headquarters Library/Washington,DC |
12/24/2014 |
| EKBD |
EPA-600/4-76-015 |
|
Research Triangle Park Library/RTP, NC |
08/01/2003 |
| ESAD |
EPA 600-4-76-015 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-253 349 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
v, 17 p. : ill., charts ; 28 cm. |
| Abstract |
The methylthymol blue (MTB) procedure used by EPA for sulfate analysis has been subjected to a ruggedness test. The method write-up has been modified to strengthen the procedure where required. A new procedure developed by EPA for extracting sulfates from the filter samples has been incorporated in the write-up. The absorbance for the MTB procedure has been established as hyperbolic. The method, as now presented, appears to be reasonably rugged with the exception of phosphate interference, which remains a problem. A potential approach for eliminating the phosphate interference is presented. |
| Notes |
Project Officer: Michael E. Beard. "Midwest Research Institute"--T.p. "Contract No. 68-02-1728"--T.p. "March 1976"--Cover. "EPA-600/4-76-015"--Cover. "EMSL/RTP No.7"--T.p. "Quality Assurance Branch Environmental Monitoring and Support Laboratory U.S. Environmental Protection Agency"--T.p. Midwest Research Institute |
