| Physicochemical characteristics of colloidal nanomaterial suspensions and aerosolized particulates from nano-enabled consumer spray products | |
|---|---|
| 년도 | 2020 |
| 날짜 | 2020 Sep |
| 페이지 / 학회지명 |
30(5):925-941 / Indoor Air |
| 논문저자 | Jihoon Park 1 2, Seunghon Ham 3, Sunju Kim 2, Miyeon Jang 4, Jinho Lee 5, Sungkyoon Kim 2, Donguk Park 6, Kiyoung Lee 2, Hyunmi Kim 7, Pilje Kim 7, Chungsik Yoon 2 |
| Link |
https://onlinelibrary.wiley.com/doi/10.1111/ina.12668
129회 연결
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1 Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe Forschungsgesellschaft mbH, Saarbrücken, Germany. 2 Department of Environmental Health Sciences, Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea. 3 Department of Occupational and Environmental Medicine, College of Medicine, Gachon University, Incheon, Republic of Korea. 4 Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Ulsan, Republic of Korea. 5 Northern Seoul Regional Office, Korea Occupational Safety and Health Agency, Seoul, Republic of Korea. 6 Department of Environmental Health, Korea National Open University, Seoul, Republic of Korea. 7 Risk Assessment Division, Environmental Health Research Department, National Institute of Environmental Research, Incheon, Republic of Korea. Abstract Physicochemical properties between colloidal engineered nanomaterials (ENMs) and aerosols released from consumer spray products were characterized. A dynamic light scattering (DLS), transmission electron microscopy (TEM), and inductively coupled plasma mass spectrometer (ICP-MS) were used to evaluate the suspended ENMs in the products. Direct-reading instruments, TEM, and ICP-MS were used to characterize the properties of aerosolized ENMs. The aerosolized organic compounds with ENMs were assumed to be vaporized for a short time after spraying. The median diameter of ENMs in product solutions measured by DLS was about 200-350 nm, while individual particle was confirmed from 3 to 50 nm by TEM. The size of aerosolized ENMs was ranged from 7 to 44 nm, and their aggregates were about 100-1000 nm in near distance. Some inorganic substances including raw nanomaterials were also found in the aerosol. The particles released from the propellant sprays were identified in far distance, while they were not found in far distance when pump sprays were used. The number concentration from the propellant sprays increased up to 6000 particles/cm3 /g at near distance and dispersed to far distance, while the most of droplets emitted from pump sprays were settled down near sprayer's location. We found other metals besides labeled ENMs are included in each product and the characteristics of the particles are different when they are sprayed. Keywords: aerosol; dispersion; exposure; nanoparticle; size distribution; suspension. |
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