【摘要】 采用易被环境分解的维生素K3、其基本成分β-甲基萘醌(MQ)和同系物三氨基三嗪甲萘醌亚硫酸盐(MTB),对在给水系统中出现的4龄摇蚊幼虫进行了杀生实验.实验结果和分析表明:MQ和MTB杀灭效果显著,半致死质量浓度低于1.8 mg.L-1,杀灭过程遵循Chick定律.求出了杀灭率和质量浓度与接触时间乘积之间的关系.在实际应用中,采用MQ比较经济,其安全质量浓度低于7 mg.L-1,在80%杀灭率时的质量浓度与接触时间乘积约为17 mg.L-1.h.更多还原

【Abstract】 The inactivation of chironomid larvae in water supply systems was experimented with environment degradable vitamin K3,its main component 2-methyl-1,4-naphthoquinone（MQ）,and their congener menadione triamintriazine bisulphite（MTB）.Results show that both MQ and MTB are quite effective and their 50% kill lethal concentration is under 1.8 mg·L^-1.The inactivation model follows Chick’s Law and the function of the lethal rate related to the product of concentration and contact time is obtained.Practically MQ is more economical with its safe dose below 7 mg·L^-1 and the concentration-contact time product around 17 mg·L^-1（）·hr at a lethal rate of 80%.更多还原