| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
EPA-600/2-80-025 |
|
Region 1 Library/Boston,MA |
05/25/2016 |
| 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 |
| ELBD ARCHIVE |
EPA 600-2-80-025 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-80-025 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB80-169238 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
viii, 35 pages : illustrations ; 28 cm. |
| Abstract |
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. |
| Notes |
Contract no. 68-02-2750. |
