Lu Ming-Chun, Chen Po-Lin, Huang Da-Ji, Liang Chih-Kuo, Hsu Ching-Shan, Liu Wei-Ting
Department of Environmental Resources Management, Chia-Nan University of Pharmacy and Science, Tainan, 71710 Taiwan.
Center for Infection Control and Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan.
Aerobiologia (Bologna). 2021;37(1):29-38. doi: 10.1007/s10453-020-09670-8. Epub 2020 Nov 5.
The disinfection efficiencies of two chemical disinfectants, chlorine dioxide and weak acid hypochlorous water (WAHW), were examined in the soiled room and dishwashing room of a hospital infectious disease ward in Taiwan. The investigations were conducted in two seasons, namely winter and summer, in order to examine the correlation between the bioaerosol concentration and the environmental factors. In addition, a single-daily disinfection mode (SM) and a twice-daily disinfection mode (TM) were applied in this study. The results showed that the bacteria and fungi colony counts were strongly correlated with the temperature. Both disinfectants reduced the bacteria and fungi concentrations in the considered rooms. However, of the two disinfectants, the ClO showed a stronger disinfection effect than the WAHW. It means that when using ClO as the disinfectant, the disinfection efficiency of the TM treatment mode is significantly better than that of the SM treatment mode. But, when using WAHW as the disinfectant, no significant difference is found between the disinfection efficiencies of the two methods. Overall, the results showed that the application of ClO twice daily provided the most effective means of satisfying the Taiwan EPA guidelines for the indoor air quality of hospital medical wards.
在台湾一家医院传染病病房的污染病房和洗碗间，对两种化学消毒剂二氧化氯和弱酸性次氯酸水（WAHW）的消毒效果进行了检测。调查在冬季和夏季两个季节进行，以研究生物气溶胶浓度与环境因素之间的相关性。此外，本研究采用了单日消毒模式（SM）和每日两次消毒模式（TM）。结果表明，细菌和真菌菌落计数与温度密切相关。两种消毒剂均降低了所考虑房间内的细菌和真菌浓度。然而，在这两种消毒剂中，二氧化氯的消毒效果比弱酸性次氯酸水更强。这意味着，当使用二氧化氯作为消毒剂时，TM处理模式的消毒效率明显优于SM处理模式。但是，当使用弱酸性次氯酸水作为消毒剂时，两种方法的消毒效率没有显著差异。总体而言，结果表明，每日两次使用二氧化氯是满足台湾环保署医院医疗病房室内空气质量指南的最有效方法。
