Qiao-Ying Chang

TL;DR: An efficient and sensitive method has been established for simultaneous determination of 653 pesticides in teas by GC/MS and HPLC/MS/MS, and a novel SPE column, Cleanert TPT, which comprised graphitized carbon black, polyamine silica, and amide polystyrene for purifying the tea samples indicated good repeatiblity and reproducibility.

TL;DR: In this article, the authors proposed a combined strategy for qualitative screening and identification of 317 pesticides in vegetables and fruits using high performance liquid chromatography coupled to quadrupole-time-of-flight mass spectrometry (HPLC-Q-TOF/MS) based on a homemade accurate mass database (MS1) and a novel MS/MS spectral library (MS2).

TL;DR: This paper uses the LC-quadrupole-time-of-flight MS technique to evaluate the behavioral characteristics of MS of 485 pesticides under different conditions and has developed an accurate mass database and spectra library.

TL;DR: The UHPLC-QTOF-MS approach proved to be a cost-effective, time-saving and powerful strategy for routine large-scope screening of pesticides.

TL;DR: There were definite differences in the test results for aged tea samples between Method 1 and Method 2, which suggests that Method 1 was capable of extracting more residual pesticides and chemical pollutants from the precipitated 165-day-aged tea samples.