Screening and quantification of 16 β-lactam antibiotics in pork by UPLC-Q-Orbitrap / 预防医学
Journal of Preventive Medicine
;
(12): 1100-1104, 2019.
Artículo
en Chino
| WPRIM
| ID: wpr-815952
ABSTRACT
Objective@#To screen and quantify 16 kinds of β-lactam antibiotics in pork by high performance liquid chromatography-quadrupole/electrostatic field orbit trap mass spectrometry(UPLC-Q-Orbitrap).@*Methods@#The pork samples were extracted by ultrasound with acetonitrile,then the supernatant was centrifuged and purified by HLB solid phase extraction column. The analytes were separated by Waters HSS T3 column(100 mm×2.1 mm,1.8 μm)with gradient elution. Mass spectrometry adopted positive ion scanning and targeted SIM/dd-MS2 monitoring mode to complete the separation of analytes in samples and mass spectrometry analysis within 10 minutes. The chromatographic retention time and fragments in mass spectrometry were compared with prepared standards to determine whether the samples contained the antibiotics tested,then the positive samples were quantified.@*Results@#The 16 kinds of β-lactam antibiotics had good linear relationship in the range of 5-400 ng/mL(all the correlation coefficients >0.99). The detection limits ranged from 0.08 μg/kg to 0.41 μg/kg,recovery rate ranged from 85.5% to 116.7%,and relative standard deviation(RSD)ranged from 3.6% to 12.8%. One of twenty pork samples detected was found penicillin G(28 μg/kg)and ampicillin(18.5 μg/kg).@*Conclusion@#UPLC-Q-Orbitrap has high resolution and can reduce matrix interference to improve the accuracy. This method is simple,fast and efficient,thus can be used to screen and quantify β-lactam antibiotics in pork.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Tipo de estudio:
Estudio diagnóstico
/
Estudio de tamizaje
Idioma:
Chino
Revista:
Journal of Preventive Medicine
Año:
2019
Tipo del documento:
Artículo
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