دورية أكاديمية
Determining the ultraviolet radiation dose experienced by aerosols using ultraviolet-sensitive dyes
| العنوان: | Determining the ultraviolet radiation dose experienced by aerosols using ultraviolet-sensitive dyes |
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| المؤلفون: | Q. Fu, F. E. Kruis |
| المصدر: | Aerosol Research, Vol 2, Pp 77-92 (2024) |
| بيانات النشر: | Copernicus Publications, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Technology (General) |
| مصطلحات موضوعية: | Medicine, Technology (General), T1-995 |
| الوصف: | The application of ultraviolet (UV)-light-based air disinfection methods holds promise but also presents several challenges. Among these, the quantitative determination of the required UV radiation dose for aerosols is particularly significant. This study explores the possibility of determining the UV dose experienced by aerosols without the use of virus-containing aerosols, circumventing associated laboratory safety issues. To achieve this, we developed a model system comprised of UV-sensitive dyes dissolved in di-ethyl-hexyl-sebacate (DEHS), which facilitates the generation of non-evaporating and UV-degradable aerosols. For the selection of UV-sensitive dyes, 20 dyes were tested, and 2 of them were selected as being the most suitable, according to several selection criteria. Dye-laden aerosol droplets were generated using a commercial aerosol generator and subsequently exposed to UV-C radiation in a laboratory-built UV irradiation chamber. We designed a low-pressure impactor to collect the aerosols pre- and post-UV exposure. Dye degradation, as a result of UV light exposure, was then analyzed by assessing the concentration changes in the collected dye solutions using a UV-visible spectrophotometer. Our findings revealed that a UV dose of 245 mW s cm−2 resulted in a 10 % degradation, while a lower dose of 21.6 mW s cm−2 produced a 5 % degradation. In conclusion, our study demonstrates the feasibility of using aerosol droplets containing UV-sensitive dyes to determine the UV radiation dose experienced by an aerosol. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2940-3391 |
| Relation: | https://ar.copernicus.org/articles/2/77/2024/ar-2-77-2024.pdf; https://doaj.org/toc/2940-3391 |
| DOI: | 10.5194/ar-2-77-2024 |
| URL الوصول: | https://doaj.org/article/e790cce8679d4d4b890eff3d805a0f5b |
| رقم الأكسشن: | edsdoj.790cce8679d4d4b890eff3d805a0f5b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 29403391 |
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| DOI: | 10.5194/ar-2-77-2024 |