Xueyan Hu

TL;DR: The profiles of mineral elements by ICP-MS with chemometric methods could be a potential and powerful tool for the classification of Chinese honey samples from different botanical origins.

TL;DR: A multi-class multi-residue analysis method for determination of veterinary drugs, pesticides and mycotoxins in dairy products by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been established and revealed the presences of chloramphenicol, cimeterol, and flunixin at the concentration of 0.027-0.452μg/kg in some samples.

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: The results revealed an excellent separation among honey samples according to their botanical origin with 100% accuracy in model training for both BP-ANN and naïve Bayes and indicated that the free amino acid profile determined by HPLC-FLD can provide sufficient information to discriminate honeys from various floral origins.

TL;DR: In this article, an effective gas chromatography-tandem mass spectrometry method was developed to determine 47 pesticide residues in tea, and the results revealed that chlorpyrifos, bifenthrin, lambda-cyhalothrin, and cypermethrin are among the most frequently detected pesticides in tea.