硫酰氟、溴甲烷联合熏蒸集装箱消毒杀虫灭鼠效果

Study on the Effect of Sulfury Fluoride and Methyl Bromide Combination Fumigating Containers

目的 观察在减少溴甲烷用量的情况下 ,硫酰氟、溴甲烷联合熏蒸集装箱的消毒效果评价。方法 集装箱现场模拟药效试验。结果 硫酰氟 10 .5 0 g/m3 与溴甲烷 2 0 .2 5 g/m3 合用封闭 11h ,能 10 0 %杀灭小白鼠及美洲大蠊 ;美洲大蠊卵 3个月孵化率为 0。硫酰氟 18.75g/m3 、溴甲烷 3 6.0 0g/m3 熏蒸集装箱 ,对小白鼠、美洲大蠊、美洲大蠊虫卵及大肠埃希菌、金黄色葡萄球菌、铜绿假单胞菌有 10 0 %消毒杀虫灭鼠效果。在 3 7.5℃ ,相对湿度 5 4%时 ,最短封闭时间为 16.67h。结论 硫酰氟、溴甲烷联合熏蒸集装箱可明显提高卫生处理效果 ,并可减少溴甲烷的用量。

Objective To study the effect of combination fumigation of sulfury fluoride and methyl bromide on km mice. Periplaneta arnericana and Escherichia coli,Staphylococcus aureus and pseudomonas aeruginosa. Methods Field analogue experiment of drug effect based on the investigation of practical effect of available insecticides used for sanitary treatment of containers. Results The effect of combination fumigation of sulfury fluoride and methyl bromide was observed to show that when the concentrations of sulfury fluoride and methyl bromide were 10.55 g/m 3 , 20.25 g/m 3 separately, and the time of closing containers' gates was 11 hours,their killing rates were 100% for KM Mice and P.americana . And the incubation rate of P.americana eggs was 0% ,too. The lowest concentrations of sulfury fluoride and methyl bromide, and the shortest time of closing containers' gates were 18.75 g/m 3 , 36.00 g/m 3 , 16.67 h respectively under the condition of 37.5 ℃ and 54% for relative humidity, on which their killing rates were 100% for KM Mice, P.americana, P.americana eggs, Escherichia coli, Staphylococcus aureus and P.aeruginosa . Temperature and relative humidity were influence factors on sanitary treatment of containers. And it was easier to kill KM Mice and insect than to kill germ. Conclusion Combination fumigating containers using sulfury fluoride and methyl bromide could increase the effect of sanitary treatment obviously,which would decrease the quantity of methyl bromide.