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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
Library Call Number Additional Info Location Last
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
Place Published Research Triangle Park, N.C.
Access Notes Also available via the World Wide Web
Corporate Au Added Ent Environmental Monitoring and Support Laboratory (Research Triangle Institute). Quality Assurance Branch.; Environmental Monitoring Systems Laboratory (Research Triangle Park, N.C.). Office of Research and Development.; Midwest Research Institute (Kansas City, Mo.)
Corp Au Ser Add Ent United States. Environmental Protection Agency. Environmental monitoring series ; EPA-600/4-76-015.
PUB Date Free Form 1976
Series Title Untraced Environmental monitoring series ; EPA-600/4-76-015
NTIS Prices PC A03/MF A01
BIB Level m
Cataloging Source OCLC/T
OCLC Time Stamp 20141217153651
Language eng
Origin OCLC
OCLC Rec Leader 01958cam 2200409Ki 45020