Abrasion Testing of Products Containing Nanomaterials, SOP-R-2: Scientific Operating Procedure Series: Release (R)
Environmental Laboratory,U.S. Army Engineer Research and Development Center Vicksburg United States
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Abrasion is an important consideration for the potential release of nanoparticles during the service life of a nanotechnology. This SOP presents a general method for abrading a material using a rotating sample platform in contact with a weighted sandpaper fixture. Particles collected with this method are analyzed with a condensation particle counter CPC and a fast mobility particle sizer FMPS, with additional particles collected on in-line filters for further analysis. The abrading process is carried out in a particle-free environment and released particles are moved by a defined airflow from the chamber to the collectionanalysis apparatus. Particle release is monitored in real time by the CPC 10nm - 1 micrometer and FMPS 32 particle size bins from 5-550 nm, and further characterization of filter-collected particles can be accomplished post-testing.