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灭蚊工作在消灭和控制蚊媒传染病中是一项很重要的措施。为供有关业务单位参考,现将敌敌畏等四种常用灭蚊剂作一简单介绍。敌敌畏敌敌畏可用敌百虫为原料,在硷性溶液中反应脱去氯化氢而制成。在苯、甲苯中溶解度很大,在煤油、汽油中溶解度较小。稍溶于水,一般为1%左右。敌敌畏原油较稳定,但水溶液易分解而失效。目前国内常用的剂型有50%敌敌畏乳剂、80%敌敌畏乳剂、95%敌敌畏油剂、0.3%敌敌畏油剂的混合剂(内加有5%滴滴涕,称之为“灭害净”)。敌敌畏的挥发性极强,有熏蒸灭虫作用。杀虫效果与气温有关,气温越高,效果越好。快速灭蚊法 1.熏蒸法:将敌敌畏原液放在铁罐上加热,让蒸气扩散。熏蒸时应紧闭门窗,半小时内能杀死室内全部蚊子。使用剂量每50立方米空间用50%敌敌畏乳剂1毫升。敌敌畏原液1毫升,加水125毫升,加热,亦获同样效果。
Anti-mosquito work is a very important measure in eliminating and controlling mosquito-borne diseases. For the business unit for reference, now dichlorvos and other four kinds of commonly used mosquito agents for a brief introduction. DDVP dichlorvos trichlorfon available as raw materials in the alkaline solution of hydrogen chloride off reaction and made. In benzene, toluene solubility in kerosene, gasoline solubility. Slightly soluble in water, usually about 1%. DDVP crude oil is more stable, but the aqueous solution is easy to break down. At present, the dosage forms commonly used in China are 50% dichlorvos emulsion, 80% dichlorvos emulsion, 95% dichlorvos oil, and 0.3% dichlorvos oil mixture (with 5% DDT added). Dichlorvos volatile strong fumigation pest control. Insecticidal effect and temperature, the higher the temperature, the better. Quick anti-mosquito method 1. Fumigation: The dichlorvos solution on the cans on the heating, so that the proliferation of steam. Fumigation should be closed doors and windows, half an hour can kill all indoor mosquitoes. Use a dose of 50 ml per 50 cubic meters of space with 50% dichlorvos emulsion 1 ml. Dichlorvos solution 1 ml, add water 125 ml, heating, also get the same effect.