Record Display for the EPA National Library Catalog


Main Title Improved temperature stability of sulfur dioxide samples collected by the Federal reference method /
Author Fuerst, Robert G.
Other Authors
Author Title of a Work
Fuerst, Robert G.
CORP Author Environmental Monitoring and Support Lab., Research Triangle Park, N.C. Quality Assurance Branch.
Publisher Environmental Monitoring and Support Laboratory, Quality Assurance Branch, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1978
Report Number EPA-600/4-78-018
Stock Number PB-279 873
OCLC Number 52971187
Additional Subjects Sulfur dioxide ; Gas analysis ; Samples ; pH ; Chemical analysis ; Temperature ; Stability ; Mercury inorganic compounds ; Chlorine inorganic compounds ; Ions ; Reaction kinetics ; Concentration ; Air pollution detection ; Federal reference method ; Mercurate/tetrachloro ; Chloride ions
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-4-78-018 Headquarters Library/Washington,DC 11/15/2012
EJBD  EPA 600/4-78-018 Headquarters Library/Washington,DC 06/18/2004
EKBD  EPA-600/4-78-018 Research Triangle Park Library/RTP, NC 09/05/2003
ESAD  EPA 600-4-78-018 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-279 873 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 34 p. : ill. ; 28 cm.
This report describes an examination of the reagents present in the SO2 Federal Reference Method (FRM) to determine if any change in reagent concentration or condition could bring about substantial, if not complete, retardation of the effect of temperature on the stability of collected SO2 samples. The parameters initially evaluated were pH, tetrachloromercurate (TCM), and chloride ion concentration. With the development of a modified collecting solution based on these studies (0.04M TCM with a Hg(+2) to Cl(-) of 1/16), collection efficiency and order of reaction of the modified collecting reagent were determined. Using an Arrhenius plot of the experimental data, an equation was derived which describes the relationship between rate of decay of collected SO2 samples and temperature. The modified collecting reagent was found to increase the stability of the collected SO2 samples over a wider temperature range. Thus the effect of temperature was reduced by about 10C when compared against previous SO2 FRM data. The improvements developed here could be used to liberalize the present temperature specification required to insure the stability of collected SO2 samples.
"April 1978"--Cover. Includes bibliographical references. "EPA-600/4-78-018."