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新型室内环境呼吸性气溶胶和飞沫测量系统。

Novel measurement system for respiratory aerosols and droplets in indoor environments.

机构信息

Biofluid Mechanics Laboratory, Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, Berlin, Berlin, 13353, Germany.

Institute of Fluid Dynamics and Technical Acoustics, Hermann-Föttinger-Institute, Chair of Fluid Dynamics, TU Berlin, Straße des 17. Juni, 135, Berlin, Berlin, 10623, Germany.

出版信息

Indoor Air. 2021 Nov;31(6):1860-1873. doi: 10.1111/ina.12860. Epub 2021 Jun 7.

DOI:10.1111/ina.12860
PMID:34096643
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8242391/
Abstract

The SARS-CoV-2 pandemic has created a great demand for a better understanding of the spread of viruses in indoor environments. A novel measurement system consisting of one portable aerosol-emitting mannequin (emitter) and a number of portable aerosol-absorbing mannequins (recipients) was developed that can measure the spread of aerosols and droplets that potentially contain infectious viruses. The emission of the virus from a human is simulated by using tracer particles solved in water. The recipients inhale the aerosols and droplets and quantify the level of solved tracer particles in their artificial lungs simultaneously over time. The mobile system can be arranged in a large variety of spreading scenarios in indoor environments and allows for quantification of the infection probability due to airborne virus spreading. This study shows the accuracy of the new measurement system and its ability to compare aerosol reduction measures such as regular ventilation or the use of a room air purifier.

摘要

SARS-CoV-2 大流行使得人们迫切需要更好地了解病毒在室内环境中的传播。我们开发了一种由一个便携式气溶胶发生人体模型（发射器）和多个便携式气溶胶吸收人体模型（接收器）组成的新型测量系统，该系统可测量可能含有传染性病毒的气溶胶和液滴的传播。通过使用溶解在水中的示踪粒子模拟人体排放病毒。接收器吸入气溶胶和液滴，并随着时间的推移同时定量测量其人工肺中溶解示踪粒子的水平。该移动系统可在室内环境中的各种传播场景中进行布置，并可量化由于空气传播病毒而导致的感染概率。本研究展示了新测量系统的准确性及其比较气溶胶减少措施（例如常规通风或使用室内空气净化器）的能力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/94c6/8242391/a0c52156a8f5/INA-31-1860-g003.jpg
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