为了解三氯羟基二苯醚含醇消毒凝胶杀菌作用及理化性能,采用载体定量杀菌试验和理化分析方法进行了实验室和现场实验观察。结果,以含质量分数1.55%的三氯羟基二苯醚和39.6%乙醇组成的消毒凝胶、pH值6.67条件下,对布片上的金黄色葡萄球...为了解三氯羟基二苯醚含醇消毒凝胶杀菌作用及理化性能,采用载体定量杀菌试验和理化分析方法进行了实验室和现场实验观察。结果,以含质量分数1.55%的三氯羟基二苯醚和39.6%乙醇组成的消毒凝胶、pH值6.67条件下,对布片上的金黄色葡萄球、铜绿假单胞杆菌、大肠杆菌和白色念珠菌作用0.5 m in,杀灭对数值均>5.00。用标准硬水将该消毒凝胶作对倍稀释,对金黄色葡萄球和白色念珠菌,作用1.0 m in,杀灭对数值分别为3.40和2.75。用该消毒凝胶原液对志愿者手及前臂皮肤进行擦拭消毒1.0 m in,对手部皮肤自然菌的杀灭对数值均>1.00。将该消毒凝胶原包装产品置于37℃恒温储存3个月,有效成分三氯羟基二苯醚和乙醇含量下降率分别为1.94%和1.01%。结论,三氯羟基二苯醚醇消毒凝胶对细菌繁殖体和真菌具有快速杀灭作用,对志愿者手皮肤上自然菌杀灭效果达到消毒合格要求,储存性能稳定。展开更多
This paper investigated the feasibility of sonication as an advanced treatment method for drinking water production and used comprehensive indexes of water quality to examine its efficiency. Results show that sonicati...This paper investigated the feasibility of sonication as an advanced treatment method for drinking water production and used comprehensive indexes of water quality to examine its efficiency. Results show that sonication significantly reduces the toxicity of water. Sonication with 5 W/L at 90 kHz lasting for 30 rain decreases the water SUVA and the disinfection byproduct formation potential （DBPFP） by 38.7% and 27. 2% respectively. Sonication also decreases the UV254 by more than 50% through destroying unsaturated chemical bonds. Higher sound intensity and higher frequency benefit the reduction of TOC and UV254. Besides, sonication significantly increases the affinity of organics with granular activated carbon （ GAC ） , and thus the hybrid sonication-GAC method reduces the water TOC, COD, UV254, and DBPFP by 78.3%, 69.4%, 75.7%, and 70.0% respectively. Therefore, sonication and the hybrid sonication-GAC metbod are proposed as advanced treatment methods for drinking water.展开更多
文摘为了解三氯羟基二苯醚含醇消毒凝胶杀菌作用及理化性能,采用载体定量杀菌试验和理化分析方法进行了实验室和现场实验观察。结果,以含质量分数1.55%的三氯羟基二苯醚和39.6%乙醇组成的消毒凝胶、pH值6.67条件下,对布片上的金黄色葡萄球、铜绿假单胞杆菌、大肠杆菌和白色念珠菌作用0.5 m in,杀灭对数值均>5.00。用标准硬水将该消毒凝胶作对倍稀释,对金黄色葡萄球和白色念珠菌,作用1.0 m in,杀灭对数值分别为3.40和2.75。用该消毒凝胶原液对志愿者手及前臂皮肤进行擦拭消毒1.0 m in,对手部皮肤自然菌的杀灭对数值均>1.00。将该消毒凝胶原包装产品置于37℃恒温储存3个月,有效成分三氯羟基二苯醚和乙醇含量下降率分别为1.94%和1.01%。结论,三氯羟基二苯醚醇消毒凝胶对细菌繁殖体和真菌具有快速杀灭作用,对志愿者手皮肤上自然菌杀灭效果达到消毒合格要求,储存性能稳定。
基金Sponsored by the National High Technology Research and Development Program of China(Grant No.2007AA06Z339)the National Science Foundation for Post-doctoral Scientists of China(Grant No.2006AA06Z306)
文摘This paper investigated the feasibility of sonication as an advanced treatment method for drinking water production and used comprehensive indexes of water quality to examine its efficiency. Results show that sonication significantly reduces the toxicity of water. Sonication with 5 W/L at 90 kHz lasting for 30 rain decreases the water SUVA and the disinfection byproduct formation potential （DBPFP） by 38.7% and 27. 2% respectively. Sonication also decreases the UV254 by more than 50% through destroying unsaturated chemical bonds. Higher sound intensity and higher frequency benefit the reduction of TOC and UV254. Besides, sonication significantly increases the affinity of organics with granular activated carbon （ GAC ） , and thus the hybrid sonication-GAC method reduces the water TOC, COD, UV254, and DBPFP by 78.3%, 69.4%, 75.7%, and 70.0% respectively. Therefore, sonication and the hybrid sonication-GAC metbod are proposed as advanced treatment methods for drinking water.
