exposure – TechConnect Briefs

Exposure Assessment Framework for Materials Selection in Consumer Products

Liong M., Exponent, Inc., US

The use of exposure and risk assessment methodologies is crucial in materials selection for consumer products, particularly those involving long-term dermal contact. While biocompatibility test procedures designed for medical devices, such as those described in [...]

Advancements in Microelectronics-Grade Carbon Nanotube Materials for NRAM® Device Manufacture and Analysis of Carbon Nanotube Mass in End User Devices

Lamb J.E., Gibbons S., Trichur R., Jiang Y., Mangelson K., Kremer K., Janzen D., Brewer Science, Inc, US

Providing materials for use in semiconductor manufacturing is challenging due to the extreme quality levels required for low metal ion and defect levels. This challenge is much greater for suppliers of materials containing long, high-aspect-ratio [...]

Advancements in Microelectronics-Grade Carbon Nanotube Materials for NRAM® Device Manufacture and Analysis of Carbon Nanotube Mass in End User Devices

Lamb J.E., Gibbons S., Trichur R., Jiang Y., Mangelson K., Kremer K., Janzen D., Brewer Science, Inc, US

Providing materials for use in semiconductor manufacturing is challenging due to the extreme quality levels required for low metal ion and defect levels. This challenge is much greater for suppliers of materials containing long, high-aspect-ratio [...]

Occupational Safety and Health Management Systems for the Safe Commercialization of Nano-enabled Products

Heidel D., Segrave A., Baker J., Bureau Veritas North America, US

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 [...]

Analytical Strategies for a systematic Characterization of Nanoparticle Release from commercial Spray Products for Exposure Quantification and Risk Assessment

Losert S., Hungerbühler K., Lattuada M., Ulrich A., EMPA, CH

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 [...]

Lessons learned from the field, how to protect yourself from occupational exposure to engineered nanomaterials

Hodson L.L., Geraci. M. Methner C.L., Crawford C., CDC/NIOSH, US

NIOSH has visited over 26 nanomaterial facilites, evaluated workplace exposures and created recommended guidance to reduce potential exposures to nanomaterials. A summary of lessons learned about effective control strategies will be shared.

A Nanotechnology Policy Framework for California

Wise A., Woodruff T., University of California-San Francisco, US

We are in the process of writing a nanotechnology framework policy recommendation for the state of California. It will be the first report of its kind to incorporate scientific analysis with regulatory recommendations. It will [...]

Exposure modeling of engineered nanoparticle

Som C., Mueller N.C., Sonderer T., Gottschalk F., Scholz R., Nowack B., Empa Materials Science and Technology, CH

An elementary step towards a quantitative assessment of the risks of new compounds to the environment is to calculate their predicted environmental concentrations (PEC). The aim of this study was to use a life-cycle perspective [...]

Exposure to nanoparticles collected in the Los Angeles basin in California leads to the up regulation to brain associated genes

Ljubimova J.Y., Kleinman M.T., Khazenzon N.M., Fujita M., Rudenkyy S., Ospital J., Wallerstein B., Meacher D., Gookin G., Salazar K., Black K.L., Cedars-Sinai Medical Center, US

Direct evidence regarding brain tumors as a result of exposure to specific chemical agents and particulate air pollutants is limited. We wanted to determine the size of nanoparticles from Los Angeles basin in California, coarse [...]

Methods for the Prediction of Nanoparticle Fate, Transport and Receptor Exposure in an Aqueous Environment

Mackay C.E., Gray M.N., Reinert K., Sellers K., AMEC, US

The development and applications of nanomaterials have presented a unique problem to environmental scientists and risk assessors. Until now, the models and paradigms used to predict the behavior of chemicals in the environment and thereby [...]