Sin-QuEChERS结合GC-MS/MS测定茄子中20种农药残留

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Abstract： Aquantitative analysis method for 20 high-risk pesticides ineggplants is established.Acetonitrile is used as the extraction solvent，and detection is carried out by the Sin-QuEChERS purification method combined with GC-MS/ MS.Dataiscollected in multiple reaction monitoringmode，andquantitative analysis is performed by matrix-matched standardcurves andthe internal standard method.Experimentalresults show that the 20 pesticides have good linearity （2号 （r>0.9985） at 10～500ng⋅mL-1 . LODs are 0.001～0.004mg⋅kg-1 ，and LOQsare 0.003～0.01mg⋅kg-1 . In spiked samples at 0.01， 0.05，and 0.10mg.kg-1 ， average recoveries are 72.58%-108.14% ，with RSDs of 1.97%～8.19% ，indicating good precisionand accuracy.This simple and efcient method suits real-world detection of high-risk pesticide residues in eggplants.

Keywords： Sin-QuEChERS; pesticide residues; gas chromatography-tandem mass spectrometry; eggplants

0 引言

茄子（SolanummelongenaL.）属茄科茄属作物，是日常饮食中不可或缺的蔬菜品种之一，因其丰富的营养价值而广受青睐。（剩余5393字）