期刊论文

中文

中华医院感染学杂志

1005-4529

2015

25

16

3658-3660,3663

10.11816/cn.ni.2015-140310

国家自然科学基金面上项目[（2010）51076079]；

本校为第一机构

目的使用人工喷射液滴模拟咳嗽所产生飞沫,研究呼吸道传染病经空气传播的路径,评估室内感染呼吸道传染病的风险建立实地研究方法。方法在洁净度为100级的洁净实验室内以可控方式使用喷嘴喷射含有与人类唾液相似非挥发性的液滴,使用基于光学干涉Mie成像技术的Particle Master IMI系统对液滴的数量及粒径分布进行测量,找到与文献报道的咳嗽所产生颗粒物数量及粒径分布相近数据。结果在选定的喷嘴喷射流量情况下,持续时间为1s喷射过程中,喷嘴出口的液滴数量浓度为4个/mm3,相当于总共喷射出40 500个液滴;喷射液滴粒径的分布特征与从文献数据获得的咳嗽呼出颗粒物的粒径分布曲线非常吻合,其最小平方相...

OBJECTIVE To establish a field research method for studying the transmission path of respiratory infec‐tious diseases via air and evaluating the indoor infectious risk by using artificial expelled droplets to simulate cough‐induced droplet nuclei .METHODS Expelled droplets containing similar non‐volatile components as human spittle were ejected by using well‐controlled nozzle in 100‐class clean operating laboratory .The quantity and the size dis‐tribution of the expelled droplets were measured using the optical Interferometric Mie Imaging...