空調システムにおける微生物汚染の実態と対策に関する研究 : 第3報-オゾンによる殺菌性能に関する基礎的な検討

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This paper reports the experimental results about the sterilization effect on microorganisms by ozone. The concept of "Exposure intensity (concentration x exposure period)" was proposed in this paper. The date obtained by this study suggested that the probability of survival shows the same value in case of same exposure of "exposure intensity". For example, in order to obtain the rate of extinction 99% to the bacteria of E. coli exposure in the "exposure intensity" of 12 (ppm x min) is required. On the other hand, for the mold of A. niger, C. cladosporioides, and P. pinophilum, more than 90 (ppm x hr) are required. Furthermore, the required sterilization time corresponding to the ozone concentration in the spot will be obtained by use of the "Exposure intensity".
2008-10-30