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微生物气溶胶在空气中的衰亡由两部分组成,一部分由于微生物在空气中的死亡即生物性衰亡,另一部分是由于气溶胶粒子的凝并、沉降、附壁等所致的物理性衰亡。研究空气中微生物的存活规律和消毒措施对空气微生物的作用时主要考查微生物气溶胶的生物性衰亡,为此,我们要将微生物气溶胶的物理衰亡从总衰亡中扣除出来。此外,测定微生物气溶胶的物理衰亡能估计表面污染的程
The decline of microbial aerosols in the air consists of two parts, one part due to microbial death in the air that is biological decline, the other part is due to the condensation of aerosol particles, sedimentation, adhesion and other physical decline caused by. To study the law of the survival of microorganisms in air and the effect of disinfection measures on airborne microorganisms mainly examine the biological decline of microbial aerosols. Therefore, we must subtract the physical decline of microbial aerosols from the total decline. In addition, the determination of the physical decline of microbial aerosols can estimate the extent of surface contamination