|Document ID (ISN)||112187|
|ISSN - Serial title
||1545-9624 - Journal of Occupational and Environmental Hygiene
|Convention or series no.
||Methner M., Hodson L., Geraci C.
||Nanoparticle emission assessment technique (NEAT) for the identification and measurement of potential inhalation exposure to engineered nanomaterials - Part A
||Mar. 2010, Vol.7, No.3, p.127-132. Illus. 15 ref.
||Nanoparticle_emission_A.pdf [in English]
||The U.S. National Institute for Occupational Safety and Health (NIOSH) established a nanotechnology field research team whose primary goal was to visit facilities and evaluate the potential for release of nanomaterials and worker exposure. The team identified numerous techniques to measure airborne nanomaterials with respect to particle size, mass, surface area, number concentration and composition. However, some of these techniques lack specificity and field portability and are difficult to use and expensive when applied to routine exposure assessment. This article describes the nanoparticle emission assessment technique (NEAT) that uses a combination of measurement techniques and instruments to assess potential inhalation exposures in facilities that handle or produce engineered nanomaterials. The NEAT utilizes portable direct-reading instrumentation supplemented by a pair of filter-based air samples (source-specific and personal breathing zone). The use of the filter-based samples are crucial for identification purposes because particle counters are generally insensitive to particle source or composition and make it difficult to differentiate between incidental and process-related nanomaterials using number concentration alone. Results from using the NEAT at 12 facilities are presented in the companion article (Part B) in this issue (see ISN 112189).
||nanoparticles; inhalation; exposure evaluation; nanotechnology
||particle surface area; sampling and analysis; personal sampling; particle size determination; determination in air; public OSH institutions; description of technique
||D - Periodical articles
||Toxic and dangerous substances
|Broad subject area(s)
||Nanotechnology and nanoparticles