甲氰菊酯、辛硫磷混合剂在苹果中的残留降解

甲氰菊酯、辛硫磷及其混剂分别在苹果上使用后 ,定期取样气相色谱测定苹果上的残留量。研究结果表明单剂及混剂甲氰菊酯在苹果上的半衰期分别为 19.3天和 18.1天 ,单剂辛硫磷和混剂辛硫磷在苹果中的残留半衰期分别为 1.54及 1.4 6天 ,甲氰菊酯和辛硫磷单独使用或混合使用在苹果中的降解规律及降解速率常数没有显著差异。从甲氰菊酯和辛硫磷在苹果上残留角度考虑两者混合使用对环境是安全的。

RESIDUE OF FENPROPATHRIN PHOXIM AND ITS MIXTURE ON APPLE

s After applying of fenpropathrin、phoxim and its mixture on apple, respectively, the residue of fenpropathrin and phoxim was analyzed. The results showed that residue half time (T 1/2 ) of fenpropathrin on apple were 19.3d and 18.1d. The residue half time (T 1/2 ) of phoxim on apple were 1.54d and 1.46d. There were no remarkable differences between the use alone and the mixed use of fenpropathrin and phoxim. From the residue standpoint, the mixed use of the two insecticides on apple was safe.