The present study addressed the dissipation of the insecticide
chlorantraniliprole in tomatoes treated with Altacor 35 WG under laboratory
and greenhouse conditions, as well as the identification of transformation
products (TPs) and coformulants, performing suspect screening analysis.
Analyses were performed by ultra-high-performance liquid and gas chromatography
coupled to quadrupole-Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap-MS
and GC-Q-Orbitrap-MS). In all cases, chlorantraniliprole was fitted
to a biphasic kinetic model, withR2values
greater than 0.99. Dissipation was noticeably faster in greenhouse
studies, in which even 96% dissipation was achieved over 53 days.
One TP, IN-F6L99, was tentatively identified in both greenhouse and
laboratory studies and was semiquantified by using chlorantraniliprole
as the analytical standard, yielding a top value of 354 μg/kg
for laboratory studies, whereas values for greenhouse studies fell
under the limit of quantitation (LOQ). Finally, a total of 15 volatile
coformulants were identified by GC-Q-Orbitrap-MS.