Indoor emissions of total and fluorescent supermicron particles during HOMEChem
| Autor: | William W. Nazaroff, Atila Novoselac, Delphine K. Farmer, Sameer Patel, Caleb Arata, David M. Lunderberg, Pawel K. Misztal, Sumit Sankhyan, Erin K. Boedicker, Allen H. Goldstein, Marina E. Vance, Yilin Tian, Kasper Kristensen |
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| Rok vydání: | 2020 |
| Předmět: |
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Environmental Engineering 010504 meteorology & atmospheric sciences Human activity Indoor bioaerosol Surface deposition 010501 environmental sciences Coarse particle Health outcomes 01 natural sciences Medical and Health Sciences Engineering Humans Cooking Particle Size 0105 earth and related environmental sciences particulate matter Building & Construction Air Pollutants cooking Public Health Environmental and Occupational Health Building and Construction Particulates fluorescent particle Fluorescence Fluorescent particle Environmental chemistry Air Pollution Indoor Earth Sciences Housing Environmental science Particulate Matter Environmental Monitoring |
| Zdroj: | Indoor air, vol 31, iss 1 Tian, Y, Arata, C, Boedicker, E, Lunderberg, D M, Patel, S, Sankhyan, S, Kristensen, K, Misztal, P K, Farmer, D K, Vance, M, Novoselac, A, Nazaroff, W W & Goldstein, A H 2021, ' Indoor emissions of total and fluorescent supermicron particles during HOMEChem ', Indoor Air, vol. 31, no. 1, pp. 88-98 . https://doi.org/10.1111/ina.12731 |
| ISSN: | 1600-0668 |
| Popis: | Inhalation of particulate matter is associated with adverse health outcomes. The fluorescent portion of supermicron particulate matter has been used as a proxy for bioaerosols. The sources and emission rates of fluorescent particles in residential environments are not well-understood. Using an ultraviolet aerodynamic particle sizer (UVAPS), emissions of total and fluorescent supermicron particles from common human activities were investigated during the HOMEChem campaign, a test-house investigation of the chemistry of indoor environments. Human occupancy and activities, including cooking and mopping, were found to be considerable sources of indoor supermicron fluorescent particles, which enhanced the indoor particle concentrations by two orders of magnitude above baseline levels. The estimated total (fluorescent) mass emission rates for the activities tested were in the range of 4-30 (1-11) mg per person meal for cooking and 0.1-4.9 (0.05-4.7) mg/h for occupancy and mopping. Model calculations indicate that, once released, the dominant fate of coarse particles (2.5-10 micrometer in diameter) was deposition onto indoor surfaces, allowing for the possibility of subsequent resuspension and consequent exposures over durations much longer than the ventilation time scale. Indoor coarse particle deposition would also contribute to soiling of indoor surfaces. |
| Databáze: | OpenAIRE |
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