2/23/2023 0 Comments Breathing zone samples![]() The 8h-time-weighted average (TWA) and 95% upper limit for respirable dust exposure were below the occupational exposure limit specified by the Japan Society for Occupational Health and the recommended exposure limits for TWA by NIOSH. The number of particles of 0.01–10 µm was also monitored online in order to examine the short-term fluctuation in the concentration and size distribution of particles. Using a cyclone sampler for PM 4 and a personal sampler for PM 0.1, PM 4 and PM 0.1 exposure levels were evaluated to discuss them in relation to worker’s duties. A gasoline forklift temporarily increased the concentration of ultrafine particles.įor the appropriate hygienic management of workplaces where workers handled nano-TiO 2 products, the status of the personal exposure of workers to respirable dust (PM 4) and nanoparticles (PM 0.1) was investigated.The maximum PM 0.1 occurred in a powder filling booth without air ventilation.More than 70% of particles in the breathing zone was coarse agglomerates of > 1 µm.PM 0.1 exposure was evaluated in a worker’s breathing zone by a personal air sampler.The status of the exposure to PM 4 and PM 0.1 of nano-TiO 2 production was investigated. ![]() ![]() Worker’s Personal Exposure to PM 0.1 and PM 4 Titanium Dioxide Nanomaterials during Packaging. Higashikubo, I., Handika, R.A., Kawamoto, T., Shimizu, H., Thongyen, T., Piriyakarnsakul, S., Muhammad, A., Hata, M., Furuuchi, M. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited. 1 Occupational Health Research and Development Center, Japan Industrial Safety and Health Association, Minato-ku, Tokyo 108-0014, JapanĢ Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japanģ Faculty of Science and Technology, Jambi University, Pondok Meja, Jambi, 36364, IndonesiaĤ Facutly of Environment, Kasetsart University, Bangkok 10900, Thailandĥ Faculty of Geoscience and Civil Engineering, Institute of Science and Engineering, Kanazawa University, Kanazawa 920-1192, JapanĦ Division of Manpower Strategy, Office of National Higher Education Science Research and Innovation Policy Council, Bangkok 10330, Thailandħ Faculty of Environmental Management, Prince of Songkla University, Hat Yai, Songkhla 90112, ThailandĬopyright The Author(s). ![]()
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