Work Item
ASTM WK28561
New Test Method for Airborne Carbon Nanotube Concentration in Ambient and Indoor Atmospheres as Determined by Transmission Electron Microscopy Direct Transfer
1. Scope
1.1 This test method is an analytical procedure using transmission electron microscopy for the determination of the concentration of carbon nanotubes and carbon-nanotube-containing particles in ambient atmospheres. 1.1.1 This test method is suitable for determination of carbon nanotubes in both ambient (outdoor) and building atmospheres. 1.2 This test method is defined for polycarbonate capillary pore filters through which a known volume of air has been drawn and for blank filters. 1.3 The direct analytical method cannot be used if the general particulate matter loading of the sample collection filter as analyzed exceeds approximately 25 % coverage of the collection filter by particulate matter. 1.4 Units--The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
air; ambient air; nanotubes; electron microscopy; indoor atmospheres; microscopy
Rationale
Currently, no standard method exists for the analysis of carbon nanotubes collected from membrane air filters. This test method will be used by those attempting to monitor for nanotubes in the air both occupationally and in the ambient environment.
The title and scope are in draft form and are under development within this ASTM Committee.
Work Item Status
Date Initiated: 04-21-2010
Technical Contact: Steven Compton
Item: 001
Ballot: D22.07 (11-01)
Status: Will Reballot Item
Item: 001
Ballot: D22.07 (19-01)
Status: Will Reballot Item
Item: 001
Ballot: D22.07 (20-07)
Status: Will Reballot Item