Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Preparation of standards for valence state measurement by x-ray fluorescence /
Author Peters, Edward T. ; Menzies, Kenneth T.
CORP Author Little (Arthur D.), Inc., Cambridge, MA.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher Environmental Sciences Research Laboratory, U.S.E.P.A.,
Year Published 1980
Report Number EPA-600/2-80-025; EPA-68-02-2750
Stock Number PB80-169238
OCLC Number 07592165
Subjects Valence ; X-ray fluorescence analysis
Additional Subjects Standards ; Air pollution ; X ray fluorescence ; Sulfur ; Vanadium ; Chromium ; X ray analysis ; Particle size ; Samples ; Molecular energy levels ; Gas analysis ; Chemical analysis ; Air pollution detection ; Procedures
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  EPA-600/2-80-025 Region 1 Library/Boston,MA 05/25/2016
EJBD ARCHIVE EPA 600-2-80-025 Headquarters Library/Washington,DC 03/21/2011
EJBD  EPA 600-2-80-025 c.1 Headquarters Library/Washington,DC 01/14/2014
EKBD  EPA-600/2-80-025 Research Triangle Park Library/RTP, NC 07/04/2003
ESAD  EPA 600-2-80-025 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-169238 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation viii, 35 pages : illustrations ; 28 cm.
The preparation and characterization of standard samples representing several valence states for sulfur, vanadium, and chromium are described. The standards will be used by the U.S. Environmental Protection Agency to investigate the potential for determining valence state by high resolution wavelength dispersive x-ray emission analysis. A total of 40 single state and 13 multistate standards were prepared by dust generation and collection on polycarbonate filters. The prepared samples and valence states include sulfur (0, +4, +6, -2), vanadium (0, +4, +5), and chromium (+3, +6). At least three standards were prepared for each valence state, with mass concentration of the valence state element in the range 1 to 50 micrograms/sq cm. The prepared samples were coated with a thin layer of nitrocellulose by a wicking procedure to provide a protective coating and to prevent loss of material. Representative samples were analyzed for the uniformity of the deposit, mean particle size and stability in air, and x-ray irradiation.
Contract no. 68-02-2750.