Method for simultaneously determining multiple neonicotinoid pesticide residues in plant source product

The invention discloses a method for simultaneously determining multiple neonicotinoid pesticide residues in a plant source product, and belongs to the technical field of pesticide detection.The method specifically comprises the steps that a mixture of silica gel and MgSO4 is adopted as a QuEChERs salt bag, the QuEChERs salt bag, ceramic homogeneous protons and the plant source product are added into an extracting agent together, then centrifugation is conducted, supernatant liquid is taken and mixed with a purifying agent containing MgSO4 and PSA, oscillation treatment is conducted, and the content of neonicotinoid pesticide residues in the plant source product is measured. According to the present invention, the silica gel is used as the silicon-containing reagent, the silica gel is used as the silicon-containing reagent, the silica gel is used as the silicon-containing reagent, the UPLC-MS/MS is adopted to determine the neonicotinoid pesticide after the filtration with the filtration membrane, the silica g