AI Article Synopsis
- A new LC-MS/MS method has been developed to simultaneously analyze twelve triazole enantiomers in fruits and vegetables using a specialized chiral stationary phase.
- The method employs magnetically assisted QuECHERS for efficient sample preparation and shows strong accuracy and precision in measurements with excellent linearity and recovery rates.
- A total of 90 samples were tested, yielding specific enantiomeric fractions for certain pesticides, demonstrating its effectiveness for monitoring chiral pesticides in food products.
Article Abstract
A LC-MS/MS method for simultaneous determination of twelve triazole enantiomers (hexaconazole, tebuconazole, triticonazole, flutriafol, diniconazole, paclobutrazol) in six fruits and vegetables was established based on a stable and self-made bridged bis(β-cyclodextrin)-bonded chiral stationary phase. Simultaneous enantio-separation of multiple analytes was achieved with resolution ca. 1.67-2.14. Magnetically assisted QuECHERS was used to simplify and optimize sample pre-treatment. The new method was validated (accuracy, precision, matrix effect, etc.). Good linearity (0.5-20 μg/L, R > 0.99) and high recoveries (76.1-103.4%) based on intra- and inter-day relative standard deviation (RSDs) (2.6-11.9%), were obtained. Furthermore, a total of 90 samples were analyzed using this method and enantiomeric fractions (EF) for tebuconazole in strawberry and cucumber (0.63 and 0.43, respectively) were determined as well as 0.57 for flutriafol in tomato. This high-throughput detection method supported a convenient enantiomeric monitoring for chiral pesticides in fruits and vegetables.
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| http://dx.doi.org/10.1016/j.foodchem.2020.128842 | DOI Listing |
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