Multiresidue analysis of 200 pesticides in jasmine ( Jasminum sambac (L.) Aiton) flowers

A multiresidue analysis method was established for 200 pesticides in jasmine ( Jasminum sambac (L.) Aiton) flowers based on QuEChERS procedure and gas chromatography-tandem mass spectrometry (GC–MS/MS). For better recoveries and purification effects, extraction solvents, extractive salts and purification methods were optimized. The limits of quantification (LOQ) of test pesticides are in the range of 0.01 and 0.1 mg kg −1, most of which were below the maximum residue limits (MRLs) prescribed by EU and China. Recoveries at 0.01, 0.1, 1.0 mg kg −1 were predominantly in the range of 70–120 % (n = 3) with corresponding RSDs lower than 20 %, which suggests satisfactory accuracy. The multiresidue analysis method was applied in monitoring pesticide residues in 8 jasmine flower samples. 50 % of those samples present with 1–2 pesticides residues. This study provides a sensitive and high-throughput method for detection of multi-pesticide residues in jasmine flowers.