1. High-throughput GC-MS and HPLC-MS/MS techniques for the multiclass, multiresidue determination of 653 pesticides and chemical pollutants in tea2. Comparative study of extraction efficiencies of three sample preparation techniques and cleanup efficiency of SPE cartridge3. The evaluation of the ruggedness of the method on different conditions4. Studies on the matrix effects in the pesticide residue analysis of tea5. The degradation of pesticide residues in aged Oolong tea by gas chromatography-tandem mass spectrometry6. The degradation of pesticide residues in incurred green tea from field trial7. A comparative study on the influences of tea hydration for the method efficiency of pesticide multiresidues8. High-Throughput Analytical Method for Determination of multi-Classes and multi-Kinds of 653 Residue Pesticides and Chemical Pollutants in Tea by GC-MS, GC-MS/MS and LC-MS/MS-AOAC Collaborative Study9. Screening of 510 Pesticide residue in tea by liquid chromatography/quadrupole time-of-flight mass spectrometry10. Screening of 504 Pesticide residue in tea by gas chromatography/quadrupole time-of-flight mass spectrometry