China is a traditional tea production, consumption and exporting country. Tea is an indispensable drink in people's daily life. In the weighing and preservation process of tea, people often use pesticides to disinfestation. Pesticides contain a variety of toxic substances that cause damage to the human body while killing pests. At home and abroad, there are extremely strict restrictions on the amount of pesticide residues in tea, so the requirements for detection technology are becoming increasingly stringent. The rapid development of rapid detection methods for various pesticide residues in tea and tea products is particularly important. Waters' comprehensive solution for multi-residue detection from sample preparation to quantitative analysis of chromatographic mass spectrometry solves various problems that may be encountered during the analysis of pesticide residues in tea and other foods. This application note describes the QuEChERS extraction and SPE purification methods for multi-residue analysis of dry tea pesticides with the following advantages:
â– Quickly extract pesticide residues in dry tea using QuEChERS method â– Simple and fast dSPE purification of samples, UPLC-MS/MS analysis; Reduce instrument maintenance time â– Directly perform acidic pesticide samples before UPLC-MS/MS analysis SPE Purification â– SPE purification of samples directly prior to GC-MS/MS analysis can extend column life and reduce maintenance required for inlets â– Use atmospheric piezo detachment in GC-MS/MS analysis applications
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