【摘要】 研究了过氧化氢降解田间农药,并对过氧化氢降解农药的室内生物活性进行测定.结果表明,经H2O2处理后田间农药残留量明显下降,经10 mL/L H2O2 处理1 d后,甲胺磷和毒死蜱的残留量下降率分别为10.57％和16.95％,处理3 d后残留量下降率分别为39.62％和30.49％,而处理7 d后则为45.21％和64.05％.室内生物测定表明,H2O2溶液浸泡处理60 min内,对植物表面的甲胺磷、毒死蜱和久效磷的毒力有微弱降低作用.更多还原

【Abstract】 The efficiency of removal of pesticide residues on vegetables was evaluated by the toxicity bioassay. The results showed that treatment with H2O2 at concentration of 10 mL/L for 1 day, the residue of methami-dophos and chlorpyrifos decreased 10.57% and 16.95%, and the degradation rates were 39.62% and 30.49% at 3 days after treatment, and 7 days later, the degradation rates were 45.21% and 64.05% . The toxicity bioassay of the pesticides on the surface of plant leaf against 3rd-instar larvae of Spodoptera litura showed that treatment with H2O2 for 60 min was able to decrease the toxicity of methamidophos, chlorpyrifos, monocrotophos to a certain extent.更多还原