Environmental Health & Safety of Nanomaterials – Page 7

Nanocellulose – Evaluation of the full spectrum of workplace health and safety

Eastlake A.C., Geraci C.L., CDC/NIOSH, US

Cellulose nano-crystals and fibrils (CNC/CNF) are gaining prominence as nano structured material with production volumes forecasted to reach 780 tons per annum by 2017. Knowledge of the toxicologic properties, actual worker exposure and resulting risk [...]

Effect of Temperature on Surface Degradation and Nanoparticle Release of Nano-SiO2 Epoxy Coatings under UV Radiation

Tien C.C., Chang A.C.-H., Liu B.H.-C., Sung L.P., National Cheng Kung University, US

To investigate the mechanisms of polymer degradation, polymer matrix, epoxy, with the addition of nanosilica (SiO2), was chosen. In this study an outdoor environment was simulated in the NIST (Nation Institute of Standards and Technology) [...]

Using single particle ICP-MS as a tool for understanding metallonanoparticles transformation during nanotoxicity assays

Johnson M.E., Hanna S.K., Petersen E.J., Nelson B.C., Yu L.L., National Institute of Standards and Technology, US

The work presented will establish a method for employing SP-ICP-MS toward the characterization of ENPs following their exposure to a model organism, C. elegans. Sample preparation, SP-ICP-MS analysis, data processing, particulate transport efficiency evaluation, and [...]

Effect of carbon nanotubes on plant growth and gas exchange using Arabidopsis thaliana

Voleti R., Missouri State University, US

There has been increasing interest in the biological and biomedical applications of carbon nanotube. We addressed the novel question: Are pure CNTs produced for distribution to manufacturers “toxic” to plants through their effects on physiological [...]

Exposure Evaluation of Airborne Titanium Dioxide from Use in Spray Sunscreens

Kreider M.L., Unice K.M., Madl A.K., Cardno ChemRisk, US

In this study, we simulated consumer application of a spray sunscreen containing nanoscale TiO2 to determine the nature of consumer TiO2 exposure from the product’s use (e.g. form of TiO2 [primary particle, aggregate/agglomerate], size of [...]

Aerosolization of Carbon Nanotubes for the Development of Reference Air Samples

Cavaliere M.R., Compton S.P., MVA Scientific Consultants, US

Reports on the inhalation risks associated with carbon nanotubes (CNTs) express concern for exposures throughout the lifetime of CNTs and CNT-enabled products. The ability to quantify airborne exposures to workers and consumers will be a [...]

Physico-chemical Characterization of Extracts of Silver Nanoparticle Containing Medical Devices

Casey B.J., Jayanti P., Sussman E.M., Dair B.J., U.S. Food and Drug Administration, US

The main goal of this research was to gain a better understanding of the extraction profile of medical devices containing silver nanoparticles. Multiple silver nanoparticle containing medical devices were incubated in various extract solutions (water, [...]

The Study of Surface Accumulated Silica Nanoparticles from “Weathered” Polymer Nanocomposites Using ICP-OES

Rabb S.A., Stanley D., Sung L., Nguyen T., Yu L.L., National Institute of Standards and Technology, US

The impact of nanoparticles on the environment and, more importantly, the human population has been of great interest for the past few years. Release of these nanoparticles from different materials from wear or climate exposure [...]

Nanoaerosol release characteristics of wallpaper coated with TiO2 nanoparticles in an air-jet simulated test chamber

Bae G.N., Park S.H., Lee S.B., Kim J.B., Korea Institute of Science and Technology, KR

Consumer nanoproducts are interested in public health aspects. In Korea, wallpaper is a popular construction material of housing. Wallpaper is well known to emit various volatile organic compounds and carbonyl compounds. Some wallpaper is coated [...]

Multi-method analysis of multiwall carbon nanotube polymer nanocomposite after photodegradation

Petersen E.J., Lam T., Gorham J., Scott K., Long C., Sharma R., Sung L.P., Liddle J.A., Nguyen T., National Institute of Standards and Technology, US

Nanomaterials can be used as nanofillers to enhance the properties of polymeric materials. However, the effect of weathering on nanocomposites and the potential for nanomaterial release is not yet well known. This stems partly from [...]