다시 뛰는 공정도시 서울!

초록

Glyphosate and glufosinate are the most commonly used nonselective herbicides in
the world. Their residues are difficult to detect in food matrices because of their low
molecular weights, amphoteric nature, and strong polarities. We studied the simultaneous
direct determination of these substance and their five metabolites. Samples were
extracted using the QuPPe-Method(Eurl-SRM)* and analyzed using hydrophilic interaction
liquid chromatography(HILIC) mode column and liquid chromatography-tandem mass
spectrometry(LC-MS/MS). Three matrices(oats, beans, and flours) spiked with seven
different components at two concentrations were used to validate the methodology.
Compouund recovery rates ranged from 51.6% to 96.6% and the associated relative
standard deviations(RSDs) were within 20%. Because of the significant matrix effect(ME)
observed in all three matrices, matrix-matched calibration was used. After the
methodology was verified, 33 imported grains(oats and beans) and flours i