为了解我县公共场所空气的卫生状况 ,于 1 998年对县城内部分公共场所空气中细菌总数进行了监测。共监测样品 2 2 9份。1 监测方法 :按《公共场所卫生标准检验方法》进行监测。采用自然沉降法。将直径 9ｃｍ的营养琼脂平皿放在室内 1 .2～ 1 .5ｍ高度 ,暴露 5分钟 ,4小时内送 In order to understand the health status of air in public places in our county, the total number of bacteria in the air of some public places in the county seat was monitored in 1998. A total of 229 samples were monitored. 1 monitoring methods: according to “public health standards test methods” for monitoring. Using natural sedimentation method. The diameter of 9cm nutrition agar plate indoors 1.2 ~ 1.5m height, exposed to 5 minutes, 4 hours delivery