| Main Title |
X-ray analysis of airborne asbestos : interim report : sample preparation / |
| Author |
Fatemi, Mohammed. ;
Johnson, E. T. ;
Whitlock, R. R. ;
Birks, L. S. ;
Gilfrich., J. V.
|
| Other Authors |
|
| CORP Author |
Naval Research Lab., Washington, D.C.;Environmental Sciences Research Lab., Research Triangle Park, N.C. Emissions Measurement and Characterization Div. |
| Publisher |
U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, |
| Year Published |
1976 |
| Report Number |
EPA 600/2-77/062 |
| Stock Number |
PB-266 671 |
| OCLC Number |
40388269 |
| Subjects |
X-ray spectroscopy ;
Asbestos ;
Air--Pollution--Measurement
|
| Additional Subjects |
Asbestos ;
X ray diffraction ;
Aerosols ;
X ray analysis ;
Alignment ;
Air pollution ;
Air filters ;
Feasibility ;
Fibers ;
Concentration(Composition) ;
Design criteria ;
Chemical analysis ;
Gas analysis ;
Air pollution detection
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-77-062 |
|
Headquarters Library/Washington,DC |
10/31/2016 |
| EKBD |
EPA-600/2-77-062 |
|
Research Triangle Park Library/RTP, NC |
06/20/2003 |
| ELBD ARCHIVE |
EPA 600-2-77-062 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 600/2-77-062 |
|
Region 9 Library/San Francisco,CA |
09/17/2012 |
| ESAD |
EPA 600-2-77-062 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-266 671 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
v, 30 pages : illustrations ; 28 cm |
| Abstract |
A measurement technique, suitable for submicrogram quantities of asbestos, using a combination of fiber alignment and x-ray diffraction was previously introduced. The x-ray measurement of aligned fibers is a straightforward operation. However, it has since been found that the sample preparation itself depends on several parameters which need critical control. The composition of the alignment medium is established as 10-20 ppm (W/V) of parlodion (cellulose nitrate) in distilled amyl acetate. The effect of filter pore-size has been shown to be more significant than previously thought. Fiber losses in the range of 50-80% of total mass are not unlikely, depending on the fiber size distribution. Similarly, ultrasonification has been shown to affect fiber size distribution and subsequent fiber retention by filters. Ambient relative humidity suitable for alignment of single drops has been established to be in the range of 35% to 45% at 22C to 20C, respectively. Parameters involved in radio frequency ashing of filters are also discussed. It is shown that ashing quality and subsequent dispersion depends on the filter membrane, and improves as this concentration is increased. |
| Notes |
Interagency agreement EPA-IAG-D6-0651. "EPA project officer: Jack Wagman." Includes bibliographical references (page 29). "EPA-600/2-77-062." |
| Place Published |
Research Triangle Park, NC |
| Supplementary Notes |
See also report dated Jan 75, PB-241 285. |
| Access Notes |
Also available via the World Wide Web. |
| Corporate Au Added Ent |
Environmental Sciences Research Laboratory.; United States. Environmental Protection Agency. Office of Research and Monitoring.; Naval Research Laboratory (U.S.) |
| Title Ser Add Ent |
Research reporting series. Environmental protection technology series ; EPA-600/2-77-062. |
| PUB Date Free Form |
November 1976 |
| Series Title Untraced |
Environmental protection technology series ; EPA-600/2-77-062 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20140911075019 |
| Language |
eng |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01667cam 2200409Ka 45020 |
