GRATZ N G, BRACHA P, CARMICHAEL A
Bull World Health Organ. 1963;29(2):251-70.
Hut and village-scale trials with solid and liquid-type dichlorvos dispensers were carried out in 1961 in the vicinity of Lagos, Nigeria, by the WHO Insecticide Testing Unit. Bioassay results indicated that with a single application satisfactory mortalities of caged mosquitos could be obtained for a period of 12-13 weeks in mud-walled huts, whether with galvanized corrugated-iron roofs or with thatched roofs. Chemical analysis of air samples showed that satisfactory concentrations of dichlorvos vapour were maintained throughout the huts for about 12 weeks, after which time sublethal concentrations were observed first near the floors of the dwellings. No depression in blood or plasma cholinesterase was noted in the exposed inhabitants
1961年,世界卫生组织杀虫剂测试单位在尼日利亚拉各斯附近,使用固体和液体型敌敌畏喷洒器进行了小屋和村庄规模的试验。生物测定结果表明,在泥墙小屋中,无论是使用镀锌波纹铁皮屋顶还是茅草屋顶,单次施用后,在12 - 13周的时间内都能使笼养蚊子获得令人满意的死亡率。空气样本的化学分析表明,敌敌畏蒸气在整个小屋内保持令人满意的浓度约12周,此后在住宅地板附近首先观察到亚致死浓度。在暴露的居民中未发现血液或血浆胆碱酯酶降低。