Standards for the determination of pesticide residues in foods of plant origin that use LC-MS/MS, such as the
standards in preparation:
prEN 15637 "Foods of plant origin — Determination of pesticide residues using LC-MS/MS following methanol
extraction and clean up using diatomaceous earth"
prEN 15662 "Foods of plant origin — Determination of pesticide residues using GC-MS and/or LC-MS/MS
following acetonitrile extraction/partitioning by dispersive SPE — QuEChERS-method”
To facilitate the determination of active substances and/or metabolites using LC-MS/MS, Table 1 specifies the
precursor ions and product ions suitable for quantification, which can be used independently of the type of
triple quadrupole mass spectrometer. However, using an ion trap mass spectrometer other product ions can
be generated or at least the relative intensities of the ions are different to triple quadrupole instruments.
Furthermore, the additional parameters declustering potential (DP), collision energy (CE), relative retention
times and an approximate classification of detection sensitivity are presented in Table 1. These were derived
using the API 20001) and should be applicable at least for other instruments of the API type (Applied
Biosystems).