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Main Title Comparison of wet chemical and instrumental methods for measuring airborne sulfate /
Author Appel, B. R. ; Kothny, E. L. ; Hoffer, E. M. ; Wesolowski., J. J.
Other Authors
Author Title of a Work
Appel, B. R.
CORP Author California State Dept. of Health, Berkeley. Air and Industrial Hygiene Lab.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1977
Report Number EPA-600/7-77-128; EPA-68-02-2273
Stock Number PB-276 620
OCLC Number 22146628
Subjects Air--Pollution--Measurement ; Air sampling apparatus ; Sulfates--Environmental aspects ; Sulphates--Environmental aspects
Additional Subjects Sulfates ; Gas analysis ; Concentration(Composition) ; Chemical analysis ; Air pollution ; X ray analysis ; X ray fluorescence ; Particles ; Samples ; Atmospheric composition ; Gas detectors ; Laboratory equipment ; Comparison ; Wet methods ; Procedures ; Air pollution detection ; Methylthymol blue ; Brosset method ; Benzoquinone/(barium-salt)-dichloro-dihydroxy
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-7-77-128 Headquarters Library/Washington,DC 07/06/2011
EJBD  EPA 600-7-77-128 c.1 Headquarters Library/Washington,DC 12/03/2012
EKBD  EPA-600/7-77-128 Research Triangle Park Library/RTP, NC 06/09/2014
ELBD RPS EPA 600-7-77-128 repository copy AWBERC Library/Cincinnati,OH 10/17/2014
ESAD  EPA 600-7-77-128 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-276 620 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 168 p. : ill. ; 27 cm.
The methylthymol blue (MTB), modified Brosset, and barium chloranilate sulfate methods were evaluated for precision, accuracy, working range, interference effects, and degree of agreement with x-ray fluorescence analysis (XRF) using atmospheric particulate samples. The samples used were collected simultaneously with glass fiber, quartz fiber and Fluoropore filters, the latter being used in a dichotomous sampler. Studies of interference effects were based upon measured concentrations of potential interferents extractable from the particulate matter as well as the filter media. The results demonstrated agreement within 16% for determining atmospheric sulfate concentrations by the three wet chemical procedures with all the filter media. XRF results on the 'fine' Fluoropore samples agreed within 10% of those obtained by wet chemical procedures on the samples and were, on average and within experimental error, equivalent to results obtained by the MTB method on 8 x 10 inch glass fiber high volume samples. Small differences in results obtained with different filter media in the present study are more consistent with the effects of analytical interferents rather than artifact sulfate formation as the cause.
"EPA-600/7-77-128." "November 1977." "Interagency Energy-Environment Research and Development Program report." Includes bibliographical references. Final report.