Rapid dimethoate detection method based on carbon quantum dot ratiometer fluorescent probe

The invention discloses a rapid dimethoate detection method based on a carbon quantum dot ratiometer fluorescent probe, and belongs to the technical field of pesticide detection. According to the method, a fluorescent carbon quantum dot is taken as a unique fluorophore, and a standard curve is established according to a linear relation between an excitation peak intensity ratio and dimethoate concentration, so that rapid detection of dimethoate is realized. The method comprises the following specific steps: (1) synthesizing fluorescent carbon quantum dots; (2) establishing a standard curve; (3) pretreating fruit and vegetable samples; and (4) determining the content of dimethoate in the fruit and vegetable sample. According to the present invention, the dimethoate rapid detection ratio meter fluorescent probe is constructed by using the double excitation characteristic of the carbon quantum dots, such that the dimethoate concentration in the fruit and vegetable sample can be rapidly, sensitively and accuratel