评价紫外线、三氧消毒机、循环风空气消毒机对门诊采血室的空气消毒效果

Efficacy of ultraviolet ray,ozone disinfector,and circulating air disinfector in the air disinfection of outpatient blood collection room

目的观察紫外线、三氧消毒机、循环风空气消毒机对门诊采血室空气消毒的效果。方法应用紫外线、三氧消毒机、循环风空气消毒机分别对医院门诊采血室内空气进行消毒,采用自然沉降法分别对消毒前、消毒后及工作后1、2、3、4 h进行空气采样,评价3种消毒方法的效果。结果静止状态下3种消毒方法消毒后平均菌落数比较差异无统计学意义(P=0.317),紫外线灯和三氧消毒机两种消毒方法在人员进入后空气中细菌平均菌落数快速升高,工作2 h后空气菌落数不符合Ⅲ类环境卫生标准要求;循环风空气消毒机在人员进入后可持续进行消毒,工作1、2、3、4 h后空气平均菌落数经监测均符合Ⅲ类环境卫生标准要求;不同消毒方法间空气菌落数比较差异有统计学意义(F=211.00,P<0.001),不同采样时间空气菌落数比较差异有统计学意义(F=272.95,P<0.001)。结论工作状态下循环风空气消毒机对门诊采血室空气消毒均能达到Ⅲ类环境卫生标准,适于门诊采血室空气消毒。

Objective To observe air disinfection efficacy of ultraviolet ray,ozone disinfector,and circulating air disinfector in outpatient blood collection room.Methods Air in outpatient blood collection room was disinfected by ultraviolet ray,ozone disinfector,and circulating air disinfector,air specimen was taken before and after air disinfection,as well as after 1,2,3,and 4 hour working condition of staff,efficacy of 3 disinfection methods were compared.Results Under static condition,there was no significant difference in average colony forming unit（CFU）among 3 disinfection methods（P=0.317）,the average CFU in air which disinfected by ultraviolet ray and ozone disinfector increased rapidly after the entry of personnel,the number of air colony did not meet the requirements of category Ⅲ environmental sanitation standard after staff worked for 2 hours;circulating air disinfector could continuously disinfect after the entry of personnel,the average CFU met the requirement of category Ⅲ environmental sanitation standard after staff worked for 1,2,3,and 4 hours;there were significant difference in the CFU among different disinfection methods（F=211.00,P〈0.001）,there were significant difference in CFU at different sampling time（F=272.95,P〈0.001）.Conclusion Circulating air disinfector can meet the requirements of category Ⅲenvironmental sanitation standard during the working condition of staff,and is suitable for air disinfection in outpatient blood collection room.