Abstract
Phytotoxins, the secondary metabolites synthesized by plants, are now recognized as a new category of environmental micropollutants. So far, only a limited number of phytotoxins have been detected and reported in terrestrial and aquatic environments, partially due to the analytical challenge involved. In this article, a robust, reliable, and efficient approach, namely Source Supported Suspect Screening (4S), is introduced for high-throughput analysis of phytotoxins from their plant origin to the downstream environmental compartments. The approach was established on an ultrahigh-performance liquid chromatography–electrospray ionization–quadrupole‑time‑of‑flight-mass spectrometry (UHPLC–ESI-QTOF-MS) analytical platform where optimal sample preparation and chromatographic conditions were investigated and a new suspect screening protocol was suggested.
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