SYMPOSIA PAPER Published: 01 January 1999
STP42336S

Proposed ASTM Method for the Determination of Asbestos in Air by TEM and Information on Interfering Fibers

Source

The draft of the ASTM Test Method for air entitled: “Airborne Asbestos Concentration in Ambient and Indoor Atmospheres as Determined by Transmission Electron Microscopy Direct Transfer (TEM)” (ASTM Z7077Z) is an adaptation of the International Standard, ISO 10312. It is currently undergoing a revision in regard to the reporting of confidence intervals for analysis results. The method differs considerably from the AHERA air clearance analysis method in that the counting rules provide a fairly complete characterization of the sizes of structures and structural components of asbestos-containing particles in the air. With the information derived from a full analysis, it is possible to determine the total asbestos structure count, the total fiber count, the PCM equivalent fiber count, the AHERA equivalent structure count and a number of other count values based on specific criteria. Examples of nonasbestos fibers which might interfere with the analysis (antigorite, palygorskite, halloysite, hornblende, sepiolite and vermiculite scrolls) are also included.

Author Information

Millette, James, R.
Executive Director, MVA, Inc., Norcross, GA
Boltin, W., Randy
Executive Director, MVA, Inc., Norcross, GA
Clark, Patrick, J.
U.S. Environmental Protection Agency, Cincinnati, OH
Brackett, Kim, A.
TN, Inc., Cincinnati, OH
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D22
Pages: 170–183
DOI: 10.1520/STP42336S
ISBN-EB: 978-0-8031-6210-5
ISBN-13: 978-0-8031-2616-9