Bélanger A, Hamilton H A
J Environ Sci Health B. 1979;14(2):213-26. doi: 10.1080/03601237909372123.
The residues of disulfoton and permethrin in an organic soil and in vegetables grown in soil treated with a granular formulation of the pesticides were determined by gas chromatography. The residues were removed from soil or plant samples by successive extractions with acetone and hexane. Permethrin persisted in the soil for the initial 28 days and declined slowly during the rest of the season but disulfoton after persisting for one week at the applied concentration was degraded in the next two weeks. The insecticides did not translocate into the edible parts of the vegetables but were present in the root system of onion and lettuce. Carrot and lettuce yields were not singificantly different from those of the controls but onion yields were substantially decreased by the use of permethrin.
采用气相色谱法测定了有机土壤以及用颗粒剂农药处理过的土壤中种植的蔬菜中二硫磷和氯菊酯的残留量。通过用丙酮和己烷连续萃取从土壤或植物样品中去除残留量。氯菊酯在土壤中最初的28天持续存在，在该季节的其余时间缓慢下降，但二硫磷在以施用浓度持续存在一周后，在接下来的两周内降解。杀虫剂没有转移到蔬菜的可食用部分，但存在于洋葱和生菜的根系中。胡萝卜和生菜的产量与对照相比没有显著差异，但使用氯菊酯使洋葱产量大幅下降。
