一种复方邻苯二甲醛消毒液性能研究

Study on the Performance of a Compound Ortho-Pathalaldehyde Disinfectant

采用稳定性加速实验、载体浸泡定量杀菌实验及金属腐蚀性实验观察一种复方邻苯二甲醛消毒液的性能。将复方邻苯二甲醛消毒液置于37℃条件下保存90 d,邻苯二甲醛含量下降率为5.4%。复方邻苯二甲醛消毒液作用20 min,对染于载体上的枯草杆菌黑色变种芽孢(Bacillus subtilis var.niger spores)杀灭率为99.999%;对染于载体上的金黄色葡萄球菌(Staphylococcus aureus)、链球菌(Streptococcus)、粪肠球菌(Enterococcus faecalis)、铜绿假单胞菌(Pseudomonas aeruginosa)、肺炎克雷伯菌(Klebsiella pneumoniae)、鲍曼不动杆菌(Acinetobacter baumannii)、白念珠菌(Candida albicans)、热带假丝酵母菌(Candida tropicalis)作用5 min,杀灭率均大于99.999%。复方邻苯二甲醛消毒液原液浸泡72 h,对不锈钢、碳钢基本无腐蚀,对铜、铝轻度腐蚀。本实验开发的复方邻苯二甲醛消毒液有效期可达2年,可用作高水平消毒剂。

Objective:The performance of a compound phthalatedehyde disinfectant was observed by experiment.Methods:Stability accelerated test,the carrier quantitative germicidal test and metal corrosion test were conducted for laboratory observation.Results:The compound ortho-phthalaldehyde disinfectant was stored at 37°C for 90 days,resulting in a decrease in ortho-phthalaldehyde content of 5.4%.The disinfectant achieved a 99.999%kill rate against Bacillus subtilis var.niger spores on the carrier after 20 minutes of exposure.Similarly,it achieved kill rates above 99.999%for Staphylococcus aureus,Streptococcus,Enterococcus faecalis,Pseudomonas aeruginosa,Klebsiella pneumoniae,Acinetobacter baumannii,Candida albicans,and Candida tropicalis after 5 minutes of exposure.After immersing in the disinfectant for 72 h,there was no corrosion of stainless steel coupon and carbon steel coupon,slight corrosion of aluminum coupon and copper coupon.Conclusion:The expiration date of the compound ortho-pathalaldehyde disinfectant which as high level disinfectants is 2 year.