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Displaying records 21 to 26.
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21. Report on an Interlaboratory Study for the Measurement of BET-Specific Surface Area using an Industrially Relevant TiO2 Nanopowder
Topic: Nanotech/Environment, Health & Safety
Published: 8/3/2011
Author: Vincent A Hackley
Abstract: This report summarizes the findings of an interlaboratory study (ILS) conducted in 2009-2010 under the auspices of the Versailles Project on Advanced Materials and Standards (VAMAS) Technical Working Area (TWA) 34 (Nanoparticle Populations). The stat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908638

22. Humic Acid-Mediated Silver Nanoparticle Formation Under Environmentally Relevant Conditions
Topic: Nanotech/Environment, Health & Safety
Published: 4/1/2011
Authors: Nelson Akaighe, Robert I. MacCuspie, Divina A Navarro, Diana S Aga, Sarbajit Banerjee, Mary Sohn, Virender K Sharma
Abstract: The formation of silver nanoparticles (AgNPs) via reduction of silver ions (Ag+) in the presence of humic acids (HAs) under various environmentally relevant conditions is described. HAs tested were from Suwannee River (SUW), and samples of three se ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907224

23. PREPARATION OF A NANOSCALE TiO2 AQUEOUS DISPERSION FOR TOXICOLOGICAL OR ENVIRONMENTAL TESTING
Topic: Nanotech/Environment, Health & Safety
Published: 1/24/2011
Authors: Julian S. Taurozzi, Vincent A Hackley
Abstract: This work prescribes the preparation of a P25 nanoparticle dispersion in high purity deionized water, as a first step towards the preparation of nanoscale P25 dispersions in relevant biological and environmental matrices. This protocol should be used ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907260

24. Colloidal Stability of Silver Nanoparticles in Biologically Relevant Conditions
Topic: Nanotech/Environment, Health & Safety
Published: 12/30/2010
Author: Robert I. MacCuspie
Abstract: Understanding the colloidal stability of nanoparticles may play a key role in interpretation of toxicological experiments, in determining if single nanoparticles or their aggregates provided the dominant result. This report examines a variety of ins ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903738

25. Ultrasonic Dispersion of Nanoparticles for Environmental, Health and Safety Assessment--Issues and Recommendations
Topic: Nanotech/Environment, Health & Safety
Published: 11/30/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R. Wiesner
Abstract: A common approach for the study of the environmental and biological interactions of nanomaterials relies on the ultrasonic disruption of powders to obtain nanoparticle suspensions. Yet, the widespread and inconsistent use of ultrasonic treatment acro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905978

26. Reporting Guidelines for the Preparation of Nanoparticle Dispersions from Dry Materials
Topic: Nanotech/Environment, Health & Safety
Published: 7/8/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark R. Wiesner
Abstract: This document provides general guidelines for reporting relevant conditions and critical parameters relating to the dispersion of nanoparticles in liquid media, including the application of ultrasonic energy or other mechanical dispersion methods (se ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905966



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