Multi-Residue Pesticide Analysis in Tea: Optimized Cleanup After QuEChERS Extraction for UPLC-MS/MS and GC-MS/MS Analysis

This application note presents QuEChERS extraction and SPE-based cleanup strategies for multi-residue pesticide analysis of dried teas. The tea sample is first equilibrated with water before extraction using the DisQuE pouch for CEN QuEChERS. Then, three aliquots are taken for further analysis.