水杨基荧光酮二聚体作为荧光探针测定乐果

Fluorometric Determination of Dimethoate Using the Salicylfluorone Dimer

水杨基荧光酮是一种三苯甲烷类阴离子试剂,中性条件下具有强荧光的水杨基荧光酮与适宜表面活性剂作用形成弱荧光缔合物,在此缔合物中加入乐果,荧光强度显著回升且有良好的线性关系,方法的线性范围为0～3.2mg/L,检出限为0.014mg/L.将以上方法直接应用于谷物、蔬菜、土壤中农药残留的检测,结果令人满意.

In the neutral solution,Salicylfluorone（SAF）can be used to determine dimethoate in the range of 0-3.2 mg/L and the detection limit found was 0.014 mg/L.The above methods have been applied to the detection of organophosphorus pesticides in grain,vegetables or soil,and the results are satisfactory.