| Main Title |
Development of improved analytical techniques for determination of asbestos in water samples / |
| Author |
Chatfield, Eric J. ;
Chatfield, E. J. ;
Dillon, M. J. ;
Stott, W. R.
|
| Other Authors |
|
| CORP Author |
Ontario Research Foundation, Mississauga.;Environmental Research Lab., Athens, GA. |
| Publisher |
National Technical Information Service, |
| Year Published |
1983 |
| Report Number |
EPA 600/4-83-042; PB83-261651; EPA-68-03-2717 |
| Stock Number |
PB83-261651 |
| OCLC Number |
794689346 |
| Subjects |
Water--Pollution ;
Asbestos--Analysis
|
| Additional Subjects |
Water analysis ;
Asbestos ;
Water pollution ;
Chemical analysis ;
Concentration(Composition) ;
Sampling ;
Fibers ;
X ray analysis ;
Oxidation ;
Stability ;
Water pollution detection ;
Transmission electron microscopy ;
Selective area electron diffraction analysis ;
Energy dispersive X ray spectroscopy ;
Procedures
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ERAD |
EPA 600/4-83-042 |
|
Region 9 Library/San Francisco,CA |
10/29/2012 |
| ESAD |
EPA 600-4-83-042 |
|
Region 10 Library/Seattle,WA |
05/23/2011 |
| NTIS |
PB83-261651 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xiii, 132 p. : ill. ; 28 cm. |
| Abstract |
Sample preparation techniques were examined for the analysis of asbestos fiber concentrations in water. The carbon-coated Nuclepore technique using a polycarbonate filter proved to be superior to either the 'drop' or the collapsed membrane filter technique. Compared with plasma ashing, ozone-ultraviolet light oxidation of water samples was found to be a simpler and superior technique for removal of organic materials. Experiments revealed that large proportions of the suspended asbestos fibers could become attached to the inside surfaces of sample containers. This effect was caused by trace organic materials of bacterial origin. Ozone oxidation, carried out inside the collection container, released the attached fibers into the water again. If bacteria and their products were excluded initially, and if absolute sterility was maintained thereafter, suspensions of both chrysotile and crocidolite appeared to be stable for long periods of time. Tests of reference suspensions in sealed glass ampoules stored for almost two years produced fiber concentration values statistically compatible with those obtained at the time of sample preparation. |
| Notes |
"PB83-261651." "EPA-600/4-83-042." "September 1983." Originally published: Athens, GA : U.S. Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory, 1983. "Project Officer J. MacArthur Long." Includes bibliographical references. |
| Place Published |
Springfield, Va. |
| Corporate Au Added Ent |
Environmental Research Laboratory (Athens, Ga.) |
| PUB Date Free Form |
1983 |
| NTIS Prices |
PC A07/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| Merged OCLC records |
154166114 |
| OCLC Time Stamp |
20121024182717 |
| Language |
eng |
| Origin |
OCLC |
| Type |
CAT |
| OCLC Rec Leader |
01404cam 2200385Ia 45020 |
