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目的观察JWX-Ⅳ型蚊帐浸泡剂浸泡蚊帐实验室对淡色库蚊的灭效。方法将药帐洗涤0、5、10、15、20次后,分别用强迫接触试验和通道试验测定药效,并用反相高效液相色谱外标法测定中药帐中顺式氯氰菊酯含量。结果药帐洗涤20次时,强迫接触试验对淡色库蚊60 min击倒率和24 h死亡率均在80%以上;通道试验对淡色库蚊阻碍吸血率和24 h死亡率分别为80.67%、85.67%;药物含量测定下降率为15.61%。结论该制剂浸泡蚊帐洗涤20次时对淡色库蚊仍有较好灭效,符合WHO长效药帐的要求。
Objective To observe the effect of JWX-Ⅳ mosquito net immersion mosquito net laboratory on Culex pipiens pallens. Methods After the drug washes were washed for 0, 5, 10, 15 and 20 times, the drug effects were determined by forced contact test and channel test, respectively. The content of cis-cypermethrin in Chinese medicine was determined by reversed-phase high performance liquid chromatography external standard method. Results After 20 times of scald treatment, the knock-out rate and the 24-h mortality of Culex pipiens pallens 60-min were both above 80% in the forced-contact test. The resistance of Culex pipiens pallens to channel arrest and the 24-h mortality were 80.67% 85.67%; drug content decreased by 15.61%. Conclusion The preparations soaked in mosquito net wash 20 times Culex pipiens pallens still better off, in line with the requirements of the WHO long-acting drug account.