Topic: Environmental Health & Safety of Nanomaterials
Framework for Quantitative Exposure Assessment of Nanostructured Materials in Occupational Settings
The purpose of this work was to provide a framework for assessing potential for risk and exposure to nanostructured materials in occupational settings. In doing so, we evaluated the characteristics of amorphous silica and carbon [...]
Occupational Safety and Health Management Systems for the Safe Commercialization of Nano-enabled Products
The value of an occupational health and safety management systems (OHSMS) approach for the safe synthesis of engineered nanoparticles and safe commercialization of nano-enabled products will be presented. An OHSMS framework integrates continual H&S improvement [...]
Intelligent testing strategy for engineered nanomaterials
The exciting properties exhibited by nanomaterials have led to the development of vast numbers of different types of nanomaterials for a variety of applications. Such applications include medicines, cosmetics, clothing, food, food packaging, sporting equipment, [...]
Inhibitory effects of titanium dioxide, silver and fullerene nanoparticles on activated sludge from a municipal wastewater treatment plant
The possibility of negative impacts of three nanomaterials on an aerobic heterotrophic microbial community (activated sludge) was investigated through respiratory inhibition tests (OECD 209 protocol). Titanium dioxide (TiO2NP, Evonik P25), silver (AgNP, synthesized in the [...]
Analysis of Factors Associated with the Releasability of Carbon Nanotubes (CNTs) from Materials Containing Nanocomposites
Carbon nanotubes (CNTs)in composites are currently being used in applications ranging from basic consumer goods to critical national defense technologies; however, concerns have been raised regarding the potential for exposure and health risk CNTs due [...]
Nanoparticle Characterization and Analysis of Airborne Titanium Dioxide in Powdered Cosmetics
In this study, several powdered cosmetic products were purchased and evaluated for the presence of TiO2 nanoparticles first by automated particle sizing using scanning electron microscopy (SEM) with chemical typing by energy dispersive spectroscopy (EDS) [...]
Risk Ranking Framework to Assess the Health Hazard of Nanomaterial-Containing Products in an Industrial and Consumer Application Setting
The unique combination of size, structure, morphology, physical/chemical characteristics, and quantum properties of nanomaterials, presents a challenging platform in understanding the potential hazards and health risks of engineered nanomaterials and the products that utilize these [...]
Analytical Strategies for a systematic Characterization of Nanoparticle Release from commercial Spray Products for Exposure Quantification and Risk Assessment
The characterization of nanoparticle release from consumer spray products is challenging. Therefore, we developed different analytical methods to determine quantity, morphology, size and elemental distribution for engineered nanoparticles in the original spray suspension and the [...]
Surface Chemical Transformations of UV Irradiated Silica-Epoxy Nanocomposites
Gorham J.M., Nguyen T., Bernard C., Stanley D., Holbrook R.D., National Institute of Standards and Technology, US
Silica nanoparticles (SiNPs) incorporated into a polymeric matrix, or silica nanocomposites (NCs), are used in a wide variety of commercially available products in numerous natural and artificial environments. Environmental factors, such as ultraviolet (UV) light, [...]