【摘要】 对南华大学附一医院,其中一组属于自然通风,一组装有中央空调的室内微生物污染状况进行了两个月的调查,结果发现空调病房微生物污染要明显比自然通风严重:空调病房的平均细菌数(535 CFU/m3)是自然通风(438 CFU/m3)的1.2倍,真菌浓度(174 CFU/m3)为自然通风(113 CFU/m3)的1.5倍。所监测的微生物样品中的80%属于格兰式阳性菌。真菌中最主要的成分是牙枝霉菌,但是在空调病房中牙枝霉菌含量(58.2%)要明显比自然通风(48.6%)高。空调病房在空调刚开启时室内的微生物浓度的最大值大约为3350 CFU/m3,是平均浓度(709CFU/m3)的4倍,笔者分析产生上述现象的原因,并提出了一些减少空调病房微生物的建议。更多还原

【Abstract】 The airborne microbes of two groups of hospital wards(one equipped a central air condition,ACW;the other were naturally ventilated,NVW) were measured simultaneously for two months.The results indicated that during air-conditioning the airborne microbial contamination in ACW was more serious than that in NVW: the average bacterial concentration of ACW(535 CFU/m3) was about 1.2-fold greater than that of NVW(438 CFU/m3),and the average fungal concentration in ACW(174 CFU/m3) was about 1.5-fold grater than one of NCW(113 CFU/m3).Of the sampled bacteria 80 % were founded to be gram positive,and the dominating genera of fungi were found to be cladosporium and penicillium.Cladosporium was the highest percentage of the total concentrations,but in the ACW the percentage of cladosporium(58.2 %) was higher than one in NCW(48.6 %),which were similar to the dust of air condition filters.In ACW,the airborne microbial concentration was highest after air conditioning started,where the maximal concentration measured was 3352 CFU/m3,which was about 4-fold greater than that of average concentration(709 CFU/m3).The reasons about these were analyzed and some advices were also given.更多还原