Spatial–Temporal Dispersion of Aerosolized Nanoparticles During the Use of Consumer Spray Products and Estimates of Inhalation Exposure
| Autor: | Jihoon Park, Pilje Kim, Hyun-Mi Kim, Jinho Lee, Sungkyoon Kim, Miyeon Jang, Chungsik Yoon, Kyunghee Choi, Kiyoung Lee, Sunju Kim, Seunghon Ham, Dong-Uk Park, Jung-Taek Kwon |
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| Rok vydání: | 2017 |
| Předmět: |
Silver
Nanoparticle Cosmetics 02 engineering and technology 010501 environmental sciences 01 natural sciences Cleanroom Humans Nanotechnology Environmental Chemistry Particle Size Aerosolization 0105 earth and related environmental sciences Aerosols Inhalation exposure Propellant Inhalation Exposure Environmental engineering Household Products Sampling (statistics) General Chemistry 021001 nanoscience & nanotechnology Environmental chemistry Nanoparticles Environmental science Particle size 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Environmental Science & Technology. 51:7624-7638 |
| ISSN: | 1520-5851 0013-936X 1466-5565 |
| DOI: | 10.1021/acs.est.7b00211 |
| Popis: | We evaluated the spatial-temporal dispersion of airborne nanomaterials during the use of spray consumer products and estimated the level of consumer inhalation exposure. A total of eight spray products including five propellant and three pump types were selected to evaluate the dispersion of airborne nanoparticles across time and space in a cleanroom which could control the background particles. Four products were advertised to contain silver and one contained titanium nanoparticles, while three products were specified no ENM but as being manufactured through the use of nanotechnology. We used direct-reading instruments with a thermodesorber unit to measure the particles (number, mass, surface area), as well as filter sampling to examine physicochemical characteristics. Sampling was conducted simultaneously at each location (1 m, near-field; 2, 3 m, far-field) by distance from the source. We estimated the inhaled doses at the breathing zone, and the doses deposited in each part of the respiratory tract using the experimental data and mathematical models. Nanoparticles released from the propellant sprays persisted in the air and dispersed over a large distance due to their small size (1466-5565 particles/cm |
| Databáze: | OpenAIRE |
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