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Article Dans Une Revue Aerosol Science and Technology Année : 2022

Dry aerosol particle deposition on indoor surface: review of direct measurement techniques

Résumé

Localizing and measuring aerosol deposition is essential to gain knowledge on contaminants and their transfer mechanisms, cleanliness of people’s environments and consequently on health. However, examining aerosol deposition is challenging, as it is based on several different mechanisms linked to aerosols, surfaces and air flow properties. Many techniques exist to measure aerosol deposition, but only a few directly measure it without modifying it. This paper gathers and details the existing measurement techniques, which directly measure a depositing flux of aerosol particles on indoor surfaces. They are classified according to whether they measure a mass or a number surface deposition concentration. Among the mass concentration measurement techniques, the bulkiest ones are the most commonly used and are based on general laws, whereas the smallest ones were recently developed and continue to be improved in laboratory experiments. The latter request to know more about theoretical and technical aspects for building and implementing. Their features entail generally an inability to carry in situ and real-time measurement. The number concentration measurement techniques are essentially based on optical systems. Commercial devices apart, these techniques are adaptable and their configurations depend on the constraints of the experiment. They also require some theoretical consideration depending on which kind of aerosol deposition is observed. On the contrary, the commercial devices are turnkey solutions and were developed for specific domains, such as cleanroom deposition measurement, in order to provide user-friendly devices and an easier reached repeatability in the measurement protocol.
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hal-03642200 , version 1 (14-04-2022)

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Paternité - Pas d'utilisation commerciale - Pas de modification

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Delphine Costa, Jeanne Malet, Evelyne Gehin. Dry aerosol particle deposition on indoor surface: review of direct measurement techniques. Aerosol Science and Technology, 2022, 56 (3), pp.261-280. ⟨10.1080/02786826.2021.2013431⟩. ⟨hal-03642200⟩
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