集装箱硫酰氟熏蒸除鼠的应用研究

Study on the Deratization Effect of Sulfuryl Fluoride in Containers

目的 对硫酰氟熏蒸除鼠的最佳剂量与时间的关系进行研究。方法 采用静式呼吸道吸入染毒法对各组大鼠进行熏蒸处理 ,观察中毒症状与死亡情况 ,运用二次响应面回归模型对实验数据进行拟合及预测 ,并经过现场模拟验证。结果 响应面模型有高度的显著性 (P <0 .0 0 0 1) ,总决定系数R2 =0 .884;以该模型预测所得的硫酰氟除鼠剂量与作用时间值为依据进行现场模拟试验 ,除鼠率均达到 10 0 %。结论 基本确定了硫酰氟熏蒸除鼠的最佳剂量与时间的关系 ,为今后集装箱熏蒸工作中设定正确的投药量与时间提供了科学依据。

Objective To study the relationship between proper dosage exposure time and deratting effect of sulfuryl fluoride in containers. Methods All groups of rats were fumigated using the method of static respiratory tract inhalation. Symptoms of intoxication and death conditions were recorded. The experimental data were simulated and predicted using response surface model and also verified by field studies. Results The response surface model was highly significant in statistics( P< 0.000 1), total R 2 equaled to 0.884; All of the deratting rates attained 100% in field studies using the dosage and exposure time predicted according to the model mentioned above. Conclusion The relationship between dosage and exposure time of sulfuryl fluoride in deratting is determined, which offers a scientific proof for the fumigation later.