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 |
Subjects |
Sulfates--Measurement--Evaluation ;
Sulfates--Analysis ;
Air--Pollution--Measurement ;
Air--Pollution--Research
|
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 |
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 |
ELBD ARCHIVE |
EPA-600-4-76-015 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
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 |
1 volume (47 pages in various pagings) : illustrations ; 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 |
Description based on online version of print resource (EPA, viewed February 21, 2023); title from title page. "EPA-600/4-76-015"--Cover. "EMSL/RTP No. 7." "March 1976." "Michael E. Beard, Quality Assurance Branch, Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency." "Performing organization: Midwest Research Institute"--Technical report data sheet. In scope of the U.S. Government Publishing Office Cataloging and Indexing Program (C&I); not distributed in this format as part of the Federal Depository Library Program (FDLP). Includes bibliographical references. Final; Prepared for U.S. Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory Contract Number: 68-02-1728 |