Compound protective agent for analyzing pesticide residues by GC/MS/MS (Gas Chromatography/Mass Spectrometry)

The invention discloses a compound protective agent for analyzing pesticide residues through GC/MS/MS. The compound protective agent comprises sorbitol, D-gluconic acid-delta-lactone and olive oil, 1 mL of sorbitol, 1 mL of D-gluconic acid-delta-lactone and olive oil are taken and placed in a 10 mL volumetric flask, the volume is fixed to the scale through acetone, the compound protective agent is prepared, and the compound protective agent is added into a sample constant-volume solution according to the proportion of 10% when used; the sorbitol has a good protection effect on a compound with a peak in the front segment, the D-gluconic acid-delta-lactone has a good protection effect on a compound with a peak in the middle segment, and the olive oil has a good protection effect on a compound with a peak in the rear segment, and the sorbitol, the D-gluconic acid-delta-lactone and the olive oil are combined for use, so that the compounds in the whole analysis can be well protected; the use is simple, and the exp