Numerical modeling of particle generation from ozone reactions with human - worn clothing 1 in indoor environments
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چکیده
8 Ozone-terpene reactions are important sources of indoor ultrafine particles (UFPs), a 9 potential health hazard for human beings. Humans themselves act as possible sites for ozone10 initiated particle generation through reactions with squalene (a terpene) that is present in their 11 skin, hair, and clothing. This investigation developed a numerical model to probe particle 12 generation from ozone reactions with clothing worn by humans. The model was based on 13 particle generation measured in an environmental chamber as well as physical formulations of 14 particle nucleation, condensational growth, and deposition. In five out of the six test cases, the 15 model was able to predict particle size distributions reasonably well. The failure in the remaining 16 case demonstrated the fundamental limitations of nucleation models. The model that was 17 developed was used to predict particle generation under various building and airliner cabin 18 conditions. These predictions indicate that ozone reactions with human-worn clothing could be 19 an important source of UFPs in densely occupied classrooms and airliner cabins. Those reactions 20 could account for about 40% of the total UFPs measured on a Boeing 737-700 flight. The model 21 predictions at this stage are indicative and should be improved further. 22
منابع مشابه
Numerical modeling of particle generation from ozone reactions with human - worn clothing 1 in indoor environments 2
8 Ozone-terpene reactions are important sources of indoor ultrafine particles (UFPs), a 9 potential health hazard for human beings. Humans themselves act as possible sites for ozone10 initiated particle generation through reactions with squalene (a terpene) that is present in their 11 skin, hair, and clothing. This investigation developed a numerical model to probe particle 12 generation from o...
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تاریخ انتشار 2014