摘要：The chlorinated hydrocarbon insecticides, DDT and dieldrin, are currently the most effective residual insecticides available, owing in part to their stability and to the fact that their effect is relatively independent of the materials to which they are applied. Recently two compounds of the group of organic phosphorus esters have been developed which are resistant to alkalies and approach the chlorinated hydrocarbons in residual effect. One of these (S 1752) is reported on in detail here; results are given of tests which show that this compound has a residual effect lasting several months. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (830K), or click on a page image below to browse page by page. 215 216 217 218 219 220 221
