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RECORD NUMBER: 8 OF 8

OLS Field Name OLS Field Data
Main Title Rapid screening method for detection of asbestos fibers in water samples {MICROFICHE}
Author Chatfield, E. J. ; Riis, P.
Other Authors
Author Title of a Work
Chatfield, Eric J.
Dillon, M. J.
CORP Author Ontario Research Foundation, Mississauga.;Environmental Research Lab., Athens, GA.
Publisher U.S. Environmental Protection Agency;
Year Published 1983
Report Number EPA-68-03-2717; EPA-600/4-83-041
Stock Number PB83-262915
Subjects Asbestos--Analysis
Additional Subjects Water analysis ; Asbestos ; Water pollution ; Fibers ; Chemical analysis ; Electron microscopy ; Sampling ; Concentration(Composition) ; Potable water ; X ray diffraction ; Magnetic fields ; Light scattering ; Solvent extraction ; Separation ; Comparison ; Performance evaluation ; Water pollution detection ; Rapid screening technique
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9100R4OU.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-262915 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 86 p. : ill. ; 28 cm.
Abstract
A rapid screening method is presented that will allow samples containing less than a pre-defined concentration of asbestos fibers to be rejected from further analysis, allowing more detailed transmission electron microscopy characterization to be confined to those samples that have high fiber concentrations. Alignment of asbestos fibers in magnetic fields, combined with measurements of the scattered light from the aligned dispersions, was investigated. A fixed-fiber alignment method and a dynamic method of fiber measurement were studied. The dynamic fiber method proved to be the more sensitive method. Detection limits of 0.5 million fibers per liter (MFL) and 5 MFL were achieved for crocidolite and chrysotile, respectively. These detection limits were achieved directly from the water sample without any preconcentration steps. The scattered light measurement techniques were applied to the determination of the fiber concentrations in drinking water samples from three sources, and the results were consistent with those obtained independently by transmission electron microscopy.
Notes
"EPA 600/4-83-041." "September 1983." "Contract #68-03-2717." Project officer : J. MacArthur Long. Microfiche.