Determination of the UV radiation dose of an aerosol using UV-sensitive dyes to optimize UV ​​room air filters

紫外线辐射能有效灭活细菌和病毒。在评估效率时，辐射剂量起着中心作用。然而，目前尚不清楚这些结果是否也适用于气体传播的病毒，当对气溶胶形式的病毒进行连续处理时，暴露时间也是一个决定性因素。为了传递用固定液体获得的关于病毒灭活的知识，需要模型系统，使其能够在专门的气溶胶实验室中研究紫外线辐射作为持续供应的气溶胶的有效性。紫外线敏感染料是已知的，并且已经作为一个模型系统进行了测试。吸收或荧光的减少可能与以w /cm2为单位的辐射剂量有关。该项目的目的是调查当液体以气溶胶形式暴露于紫外线辐射时，染料颜色强度随剂量率增加而下降（已知剂量率与病毒和细菌灭活之间的关系，在高度安全的实验室中确定）是否仍然适用。这将使通过测量颜色强度来检查紫外线空气净化器对气溶胶的有效性成为可能。

UV radiation is effective in inactivating bacteria and viruses. The radiation dose plays a central role in assessing the efficiency. However, it is unclear whether these results also apply to gas-borne viruses, and exposure time is also a decisive factor when a continuous process is applied to viruses in aerosol form. In order to transfer knowledge about virus inactivation gained with stationary liquids, model systems are needed which make it possible to investigate the effectiveness of UV radiation in specialized aerosol laboratories as a continuously supplied aerosol. UV-sensitive dyes are known and have already been tested as a model system. The decrease in absorption or fluorescence can be related to the radiation dose in Ws /cm2.The aim of this project is to investigate whether the decrease in color intensity of dyes (with a known relationship between dose rate and inactivation of viruses and bacteria determined in a high-security laboratory) with increasing dose rate still applies when the liquid is exposed to UV radiation in aerosol form. This would make it possible to check the effectiveness of UV-based air purifiers for aerosols by measuring the color intensity.