摘要
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 studied the stability of the aerosol of escherichia coli K-12C-600,a host strain for genetic engineering,in a special rotating drum with sodium fluorescein as aerosol tracer.It showed that the survival of the bacterial aerosol decreased as ambient temperture rose within 10～30℃,at 60% relative humidity.Low relative humidity seemed to favor the survival of the bacterial aerosol.The count median diameter of the bacterial aerosol was between 2.6～3.6μm.The particles of these size can suspend in air for relative long time when drum was operated at 4 rotating per minute.
出处
《解放军预防医学杂志》
CAS
北大核心
1993年第5期339-342,共4页
Journal of Preventive Medicine of Chinese People's Liberation Army
关键词
大肠杆菌
微生物
气溶胶
存活
Escherichia coli
Microbial aerosol
Survival
