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我们使用气溶胶设备,以荧光素钠作为化学示踪剂,观察了大肠杆菌K-12C-600株(简称大肠杆菌)气溶胶在不同温湿度条件下的稳定性.试验结果证明:气雾室在每分钟4转时,大肠杆菌气溶胶的粒数中值直径在2.6～3.6μm之间.在不同温度(10℃,20℃,30℃),同一相对湿度(60%)条件下,大肠杆菌气溶胶的存活率随着温度的升高而降低.在同一温度(20℃),不同相对湿度(30%,60%,90%)条件下,大肠杆菌气溶胶在低湿时存活较好,中湿和高湿的差别无实际意义.
We use aerosol equipment and sodium fluorescein as a chemical tracer to observe the stability of Escherichia coli K-12C-600 (Escherichia coli) aerosol under different temperature and humidity conditions.The results show that the aerosol chamber The average particle diameter of Escherichia coli aerosol was between 2.6 and 3.6 μm at 4 revolutions per minute.Under the same relative humidity (60%) at different temperatures (10 ℃, 20 ℃, 30 ℃) The viability of bacillus aerosols decreased with increasing temperature.E. Coli aerosol survived at low humidity at the same temperature (20 ℃) and relative humidity (30%, 60%, 90%), The difference between wet and wet has no real meaning.