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Potential for exposure to engineered nanoparticles from nanotechnology-based consumer spray products
Yevgen Nazarenko1, Tae Won Han, Paul J Lioy
1Department of Environmental Sciences, Environmental and Occupational Health Sciences Institute, Rutgers University, 14 College Farm Road, New Brunswick, NJ 08901, USA.
Journal of Exposure Science & Environmental Epidemiology
|March 3, 2011
Summary
Consumer sprays, both nanotechnology-based and regular, can release nanoparticles and micrometer-sized particles. These airborne particles can be inhaled, posing potential respiratory exposure risks from everyday product use.
Area of Science:
- Environmental Science
- Nanotechnology
- Toxicology
Background:
- Nanotechnology is increasingly used in consumer products, raising concerns about potential human exposure.
- Consumer sprays, including those utilizing nanotechnology, can release particles into the air during use.
Purpose of the Study:
- To assess human exposure potential to engineered nanoparticles from nanotechnology-based consumer sprays.
- To compare particle release and inhalation exposure potential between nanotechnology-based and regular consumer spray products.
Main Methods:
- Particle size distribution analysis using Photon Correlation Spectroscopy.
- Particle characterization (size, shape, agglomeration) via Transmission Electron Microscopy.
- Assessment of airborne particle release during realistic spray application and nebulization for inhalation exposure potential.
Main Results:
- Nanoparticles were detected in some nanotechnology-based and regular spray products via electron microscopy.
- Photon Correlation Spectroscopy indicated particles <100 nm in all products.
- Airborne particles ranging from 13 nm to 20 μm were released during the use of most sprays, indicating potential for inhalation and respiratory deposition.
Conclusions:
- Both nanotechnology-based and regular consumer sprays can release nanoparticles and micrometer-sized particles.
- Inhalation exposure to these particles is possible during the use of various spray products.
- Further research into the health implications of particle exposure from consumer sprays is warranted.
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