Direct residue analysis of systemic insecticides and some of their relevant metabolites in wines by liquid chromatography – mass spectrometry

Evaluation of supercritical fluid chromatography accurate mass spectrometry for neonicotinoid compounds determination in wine samples

“…The LOQs of the analytical procedure (SPE extraction followed by SFC-ESI-MS) are in the range from 1 to 11 ng mL -1 , referred to the wine matrix, Table 3. These LOQs are comparable to those (1 ng mL -1 ) obtained by direct large volume injection liquid chromatography tandem mass spectrometry (LC-MS/MS) [16] and slightly higher than those (0.2 ng mL -1 ) reported by our group using a pre-concentration step prior to LC-MS/MS [15]. These two latter methods have been developed using QqQ instruments, which are supposed to be more sensitive than TOF-MS systems.…”

“…In a previous study, we have reported the presence of IMI residues in white wines elaborated in the Northwest of Spain before year 2016 [15]. Another study has found similar low concentrations of this compound in commercial wines, whilst those of imidacloprid-olefin (IMI-OLE), considered as a major metabolite of IMI, reached up to 20-times higher levels that those of the precursor insecticide [16].…”

Fabric phase sorptive extraction followed by ultra-performance liquid chromatography-tandem mass spectrometry for the determination of fungicides and insecticides in wine

“…Although some studies describe wine analysis by direct injection of the filtered sample in the chromatographic system [4,5], a sample preparation step is usually required to remove unwanted components, to increase the concentration of pesticides and/or to make the wine matrix compatible with the chromatographic instrument (in case of gas chromatography (GC) based methods). Solid-phase extraction (SPE) [6][7][8][9][10] and QuEChERS [11][12][13][14] are the most common sample preparation methodologies to extract and/or to concentrate multiclass pesticides from wine.…”

Fabrication of boron‐rich multiple monolithic fibers for the solid‐phase microextraction of carbamate pesticide residues in complex samples

“…So far, chromatographic methods such as HPLC and GC are the routine analytical techniques for the determination of CPs in various samples. Compared with GC, HPLC is more popular because derivatization procedure of CPs is needed in GC.…”

“…Carbamate pesticides (CPs) such as cloethocarb (CC), carbaryl (CA), isoprocarb (IC), and fenoxycarb (FC) are synthetic pesticides. Because of broad biological activity, relatively short half-life period and low bioaccumulation So far, chromatographic methods such as HPLC [8,9] and GC [10] are the routine analytical techniques for the determination of CPs in various samples. Compared with GC, HPLC is more popular because derivatization procedure of CPs is needed in GC.…”