| Exposure Assessment of Solvents and Toluene Diisocyanates among Polyurethane Waterproofing Workers in the Construction industry | |
|---|---|
| 년도 | 2020 |
| 날짜 | 2020 Jun |
| 페이지 / 학회지명 |
30(2), 134-152 / Journal of Korean Society of Occupational and Environmental Hygiene |
| 논문저자 | Hyunhee Park1,2ㆍEunsong Hwang1 ㆍJiwon Ro1 ㆍKwangmyung Jang1 ㆍSeunghyun Park1 ㆍChungsik Yoon2* |
| Link |
https://doi.org/10.15269/JKSOEH.2020.30.2.134
86회 연결
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1 Occupational Safety and Health Research Institute 2 Graduate School of Public Health, Seoul National University Abstract Commercial spray products are commonly used in daily life and airborne particles generated by these products may cause adverse health effects. Our study was aimed to characterize the behaviors of airborne particles from spray products and to determine the deposition loss rate. Four categories of spray products with highly frequent use - air fresheners, fabric deodorants, window cleaners, and a bathroom cleaner - were selected for the study. The products were applied in a cleanroom according to the instructions for use. Airborne particles (10-10,000 nm) were measured within the breathing zone of a user with a scanning mobility particle sizer and an optical particle spectrometer. Additionally, filter sampling was performed to examine the morphological characteristics of the particles using a field emission-scanning electron microscope (FE-SEM). The initial concentration and particle size distribution varied among different spray types and products. Two propellant-type air fresheners that we tested showed a high initial concentration of smaller sized particles. However, one of these and all hand-pressure type propellants showed a low initial concentration in all size ranges. We observed that particles in nucleation mode (10-31.6 nm) decreased and aggregated particles shifted to accumulation mode (100-1,000 nm) over time. The FS-SEM analysis confirmed the aggregation of nano-sized particles for all products. The deposition loss rates of various particle sizes depended on the initial concentration and distribution of particle sizes. For two air fresheners with high initial concentrations, the loss rate of small-sized particles was higher than that of the other products whereas the particle loss rate of large-sized particles was higher, regardless of initial concentration. The results of this study can give us useful information in the behaviors of airborne particles in the consumer spray products and resulting exposure assessment especially in the application to the exposure modeling of spray products. Keywords: Airborne particle; Behavioral characteristics; Consumer exposure model; Inhalation exposure; Spray product. |
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연구성과