여름정기학술대회
2022여름초록
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Amphenicols are a
group of chemical compounds in cluding chloramphenicol (CAP), thiamphenicol
(TAP), florfenicol (FF), and florfenicol amine (FFA). In this work, a modified
QuEChERS extraction method followed by UPLC-MS/MS was developed for
the simultaneous quantification of residues, including CAP, TAP, FF, and FFA in
egg and milk. The target
analytes were extracted with a combination of acidified acetonitrile and
ammonium hydorxide subsequently purified with original QuEChERS kits (composed
of magnesium sulfate and sodium chloride) as well as n-hexane. All analytes were separated on a reversed-phase analytical
column using and a mobile phase of (A) distilled water and (B) acetonitrile
with 0.1% acetic acid. Good linearity (R2≥0.9958) was achieved over the tested concentration range
(0.5–5 μg/kg for CAP, 5–50 μg/kg for TAP, FF, and FFA) in matrix-matched
standard calibrations. Recoveries of 69.8~102.8%, with relative standard
deviations (RSDs) of ≤8.87% (intraday and interday), were obtained for each
sample at three spiking concentrations (CAP:0.5, 1, 5 μg/kg; TAP, FF, and FFA:5, 10, and 20 μg/kg). In conclusion, the current approach is simple, efficient
and reliable and can successfully determine the residual levels of CAP, TAP,
FF, and FFA in milk and egg. The study was supported by the Ministry of Food
and Drug Safety Administration, Republic of Korea [grant number 20162MFDS621]
in 2021.
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