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Exposure assessment of workplace manufacturing titanium dioxide particles.
- Source :
-
Journal of Nanoparticle Research . Oct2016, Vol. 18 Issue 10, p1-13. 13p. - Publication Year :
- 2016
-
Abstract
- With the widespread use of titanium dioxide (TiO) human exposure is inevitable, but the exposure data on TiO are still limited. This study adopted off-line filter-based sampling combined with real-time activity-based monitoring to measure the concentrations in a workplace manufacturing TiO (primary diameter: 194 ± 108 nm). Mass concentrations (MCs) of aerosol particles in the packaging workshop (total dust: 3.17 mg/m, nano dust: 1.22 mg/m) were much higher than those in the milling workshop (total dust: 0.79 mg/m, nano dust: 0.31 mg/m) and executive office (total dust: 0.44 mg/m, nano dust: 0.19 mg/m). However, the MCs of TiO were at a relatively low level in the packaging workshop (total TiO: 46.4 μg/m, nano TiO: 16.7 μg/m) and milling workshop (total TiO: 39.4 μg/m, nano TiO: 19.4 μg/m) by ICP-MS. The number concentration (NC), surface area concentration (SAC) of aerosol particles potentially deposited in alveolar (SAC), and tracheobronchial (SAC) regions of lungs in the packaging workshop were (1.04 ± 0.89) × 10 particles/cm, 414.49 ± 395.07, and 86.01 ± 83.18 μm/cm, respectively, which were all significantly higher than those of the milling workshop [(0.12 ± 0.40) × 10 particles/cm, 75.38 ± 45.23, and 17.60 ± 9.22 μm/cm, respectively] as well as executive office and outdoor background ( p < 0.05). Activity-related characteristics were found in both workshops, and the time-variant characteristics showed very similar trends for 3 days in the packaging workshop. Our study provides important data of TiO particles exposure in the workplace. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13880764
- Volume :
- 18
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Nanoparticle Research
- Publication Type :
- Academic Journal
- Accession number :
- 118355429
- Full Text :
- https://doi.org/10.1007/s11051-016-3508-9