烯肟菌酯正辛醇-水分配系数的测定

Octanol/Water Partition Coefficient Determination of Enostrobilurin

建立了水中微量烯肟菌酯的测定方法,水中的烯肟菌酯经二氯甲烷萃取后,进HPLC测定,方法的平均添加回收率为98.1%～100.9%,烯肟菌酯的最小检出量为2×10-9g,最小检出浓度为0.02μg.mL-1.摇瓶法对烯肟菌酯正辛醇-水分配系数的测定结果表明,烯肟菌酯在二次蒸馏水中的lgKow为3.03±0.12.生物体对烯肟菌酯具有较强程度的富集作用.

The method of residue analysis of enostrobilurin in water was established by HPLC detection after extraction using dichloromethane.The results indicated that fortified recoveries in water of this method were 98.1%~100.9% at 0.1 μg·mL-1 to 2 μg·mL-1 of fortification.The minimum detectable quantity in water was 2×10-9 g,and the minimum detectable concentration in water was 0.02 μg·mL-1.The Kow of enostrobilurin detected by bottle-shaking method in double-distilled water were 773.99~1 446.11,and lgKow was 3.03±0.12.The biological accumulation of enostrobilurin was high.