Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging
Abstract For the appropriate hygienic management of workplaces where workers handled nano-TiO2 products, the status of the personal exposure of workers to respirable dust (PM4) and nanoparticles (PM0.1) was investigated. Using a cyclone sampler for PM4 and a personal sampler for PM0.1, PM4 and PM0.1...
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| Format: | Article |
| Language: | English |
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Springer
2020-11-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.2020.10.0606 |
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| author | Ichiro Higashikubo Rizki Andre Handika Toshihiro Kawamoto Hidesuke Shimizu Thunyapat Thongyen Suthida Piriyakarnsakul Amin Muhammad Mitsuhiko Hata Masami Furuuchi |
| author_facet | Ichiro Higashikubo Rizki Andre Handika Toshihiro Kawamoto Hidesuke Shimizu Thunyapat Thongyen Suthida Piriyakarnsakul Amin Muhammad Mitsuhiko Hata Masami Furuuchi |
| author_sort | Ichiro Higashikubo |
| collection | DOAJ |
| description | Abstract For the appropriate hygienic management of workplaces where workers handled nano-TiO2 products, the status of the personal exposure of workers to respirable dust (PM4) and nanoparticles (PM0.1) was investigated. Using a cyclone sampler for PM4 and a personal sampler for PM0.1, PM4 and PM0.1 exposure levels were evaluated to discuss them in relation to worker’s duties. 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. 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 action level was exceeded during the filling of a flexible container bag. More than 70% of particles in the breathing zone was coarse agglomerates of > 1 µm, while it may be influenced by powder properties and the handling process as well as the management of local ventilation. The maximum PM0.1 concentration (31.3 µg m–3) occurred in a powder filling booth without air ventilation. The operation of a gasoline powered forklift temporarily increased the concentration of ultrafine particles. Most of TiO2 powder was suspended as micron-order agglomerates in the breathing zone. However, since PM0.1 exposure was much larger than those in outdoor environment particularly under insufficient cares to aerosolized powder and air ventilation, PM0.1 exposure should also be monitored. |
| format | Article |
| id | doaj-art-18b304ef1fbf4decb69a09fd642b6efe |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-11-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-18b304ef1fbf4decb69a09fd642b6efe2025-02-09T12:19:55ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-11-0121611810.4209/aaqr.2020.10.0606Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during PackagingIchiro Higashikubo0Rizki Andre Handika1Toshihiro Kawamoto2Hidesuke Shimizu3Thunyapat Thongyen4Suthida Piriyakarnsakul5Amin Muhammad6Mitsuhiko Hata7Masami Furuuchi8Occupational Health Research and Development Center, Japan Industrial Safety and Health AssociationGraduate School of Natural Science and Technology, Kanazawa UniversityOccupational Health Research and Development Center, Japan Industrial Safety and Health AssociationOccupational Health Research and Development Center, Japan Industrial Safety and Health AssociationFacutly of Environment, Kasetsart UniversityGraduate School of Natural Science and Technology, Kanazawa UniversityGraduate School of Natural Science and Technology, Kanazawa UniversityFaculty of Geoscience and Civil Engineering, Institute of Science and Engineering, Kanazawa UniversityFaculty of Geoscience and Civil Engineering, Institute of Science and Engineering, Kanazawa UniversityAbstract For the appropriate hygienic management of workplaces where workers handled nano-TiO2 products, the status of the personal exposure of workers to respirable dust (PM4) and nanoparticles (PM0.1) was investigated. Using a cyclone sampler for PM4 and a personal sampler for PM0.1, PM4 and PM0.1 exposure levels were evaluated to discuss them in relation to worker’s duties. 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. 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 action level was exceeded during the filling of a flexible container bag. More than 70% of particles in the breathing zone was coarse agglomerates of > 1 µm, while it may be influenced by powder properties and the handling process as well as the management of local ventilation. The maximum PM0.1 concentration (31.3 µg m–3) occurred in a powder filling booth without air ventilation. The operation of a gasoline powered forklift temporarily increased the concentration of ultrafine particles. Most of TiO2 powder was suspended as micron-order agglomerates in the breathing zone. However, since PM0.1 exposure was much larger than those in outdoor environment particularly under insufficient cares to aerosolized powder and air ventilation, PM0.1 exposure should also be monitored.https://doi.org/10.4209/aaqr.2020.10.0606Personal exposureNanomaterialTitanium dioxideRespirable dustAerosol nanoparticles |
| spellingShingle | Ichiro Higashikubo Rizki Andre Handika Toshihiro Kawamoto Hidesuke Shimizu Thunyapat Thongyen Suthida Piriyakarnsakul Amin Muhammad Mitsuhiko Hata Masami Furuuchi Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging Aerosol and Air Quality Research Personal exposure Nanomaterial Titanium dioxide Respirable dust Aerosol nanoparticles |
| title | Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging |
| title_full | Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging |
| title_fullStr | Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging |
| title_full_unstemmed | Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging |
| title_short | Worker’s Personal Exposure to PM0.1 and PM4 Titanium Dioxide Nanomaterials during Packaging |
| title_sort | worker s personal exposure to pm0 1 and pm4 titanium dioxide nanomaterials during packaging |
| topic | Personal exposure Nanomaterial Titanium dioxide Respirable dust Aerosol nanoparticles |
| url | https://doi.org/10.4209/aaqr.2020.10.0606 |
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