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NIOSH publishes draft chapter on analysis of CNTs by Transmission Electron Microscopy

Date: 28/2/2017

The National Institute for Occupational Safety and Health (NIOSH) has announced the availability of a draft chapter on “Analysis of Carbon Nanotubes and Nanofibers on Mixed Cellulose Ester Filters by Transmission Electron Microscopy” for public comment. It is intended that the chapter will be published in the NIOSH Manual of Analytical Methods (NMAM). NMAM was first published in 1974 and currently contains over 300 methods that can be used by occupational safety and health professionals to measure worker exposures to chemical and biological agents.

The draft chapter provides standardised approaches for the analysis of carbon nanoparticles. These standardised approaches are intended to harmonise analytical techniques, enabling comparison of results between studies and fostering optimal data quality.  The chapter provides detailed guidance on effective means to perform Transmission Electron Microscopic (TEM) analysis on carbon nanotubes and nanofibers that are sampled from occupational atmospheres.  

Following a scientific peer review, NIOSH is now seeking public review and comment on this document from anyone with an interest in analysis of carbon nanoparticles.  Comments must be received by the 28th April 2017. Further information is available in the Federal Register notice.

Source: Federal Register

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MWCNT-7 is classified by IARC as ‘possibly carcinogenic to humans’ (Group 2B).