Record Display for the EPA National Library Catalog

RECORD NUMBER: 4 OF 5

OLS Field Name OLS Field Data
Main Title Measurement of atmospheric sulfates : evaluation of the methylthymol blue method /
Author Bergman, Fred J. ; Sharp., Michael C.
Other Authors
Author Title of a Work
Sharp, Michael C.
Beard, Michael E.,
Bergman, Fred J.
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
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101A3PB.PDF
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 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
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