Use of ultra‐high‐pressure liquid chromatography–quadrupole time‐of‐flight MS to discover the presence of pesticide metabolites in food samples

Abstract

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Current use of high-resolution mass spectrometry in the environmental sciences

“…Obtaining nw-XICs at those common m/z fragment ions, together with their accurate mass spectra, will reveal their presence in the sample [57,71,72]. An extension of this approach has been used for analysis of pesticides in vegetable samples, based not only on the fragmentation pathway of the parent compound but also on that of degradation products detected in the samples [73]. The second strategy is based on performing laboratory or field experiments under controlled conditions to investigate pesticide metabolism and/or degradation, which is helpful for obtaining a better understanding of the compounds that might be expected in the environment.…”

Rapid wide-scope screening of drugs of abuse, prescription drugs with potential for abuse and their metabolites in influent and effluent urban wastewater by ultrahigh pressure liquid chromatography–quadrupole-time-of-flight-mass spectrometry

“…Using this approach, the QTOF instrument is used in TOF mode, promoting fragmentation in the collision cell. MS E experiments involve the simultaneous acquisition of exact mass data at low and high collision energy [28][29][30][31][32]. By applying low energy (LE) in the collision cell, fragmentation is minimized, and the information obtained corresponds normally to non-fragmented ions, related to the parent molecule.…”

Fast Characterization of Constituents in HuangKui Capsules Using UPLC–QTOF-MS with Collision Energy and MassFragment Software

“…To keep up with the pace of data acquisition, time-of flight (TOF) mass spectrometer was developed for UPLC systems, which proved to be suitable for the analysis of complex samples [17][18][19][20][21][22][23].…”