Pretreatment method for determining carbamate multi-pesticide residues in fruits and vegetables

The invention discloses a pretreatment method for determining carbamate multi-pesticide residues in fruits and vegetables, which comprises the following steps of: adding acetonitrile and sodium salt into a fruit and vegetable sample, extracting, adding sulfate, and centrifuging to obtain a supernatant; and adding the supernatant into a container containing a purifying agent for treatment, whereinthe sodium salt comprises sodium citrate buffer salt and sodium chloride, and the mass ratio of the sodium citrate buffer salt to the sodium chloride is 1: (2-10). The method has the beneficial effects that the detection limit is reduced, and the sensitivity and the anti-interference capability are improved. 本发明公开了一种测定果蔬中氨基甲酸酯类多农药残留的前处理方法，包括：在果蔬样品中加入乙腈和钠盐提取，再加入硫酸盐离心取上清液；将上清液加入含有净化剂的容器中进行处理；其中，所述钠盐包括柠檬酸钠缓冲盐和氯化钠，所述柠檬酸钠缓冲盐和所述氯化钠的质量比为1:2～10。本发明具有降低检出限、提高灵敏度和抗干扰能力的有益效果。