Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Simultaneous analysis of glucocorticoids in bovine muscle and liver by LC-MS/MS

LC-MS/MS를 이용한 소의 근육과 간 중에 잔류하는 glucocorticoids 동시 분석

  • Received : 2010.02.16
  • Accepted : 2010.06.24
  • Published : 2010.08.25
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Abstract

A new method for the simultaneous determination of six glucocorticoids (betamethasone, dexamethasone, prednisone, prednisolone, methylprednisolone, and flumethasone) in meats (bovine muscle, bovine liver) were established. Samples were effectively extracted using C18 cartridge with ethylacetate. Chromatographic separation was achieved using C18 column and negative electrospray ionization mass spectrometry was performed in the Multiple Reaction Monitoring mode for the effective quantitation and qualification of glucocorticoids. Acetonitrile and water (0.1% formic acid) were used as mobile phase and additive for effective electrospray ionization, and gave good chromatographic separation and mass spectrometric sensitivity. The limit of detection (LODs) and the limit of quantitation (LOQs) in spiked blank samples depending on types of matrix and pharmaceuticals were ranged from 0.2 to $1.0\;{\mu}g$/kg and 0.8 to $3.4\;{\mu}g$/kg, respectively. And the recoveries were between 89.5 to 119.6%. The established method showed good recoveries, accuracies, precisions and fast sample preparation and it will be applied to assay of glucocorticoids residues in meat.

축산물(소의 근육 및 간)중에 잔류하는 합성 글루코코티코이드 6종 (betamethasone, dexamethasone, prednisone, prednisolone, methylprednisolone, flumethasone)에 대한 동시분석방법을 확립하였다. 효과적인 기기분석을 위해서 시료는 C18 고체상 카트리지를 사용하여 에틸아세테이트 용매를 사용하여 추출/정제하였다. C18 컬럼을 사용하여 분리한 후 음이온 전기분무 질량분석법의 multiple reaction monitoring 방법을 사용하여 정량 및 정성 분석을 수행하였다. 효과적이고 감도있는 HPLC-MS/MS 분석을 위해서 0.1% 포름산이 포함된 물과 아세토나이트릴이 이동상 용매로 사용되었다. 메트릭스와 약물의 종류에 따라서 검출한계(LOD)는 $0.2-0.1\;{\mu}g$/kg, 정량한계(LOQ)는 $0.8-3.4{\mu}g$/kg 이었으며, 회수율은 89.5-119.6%이었다. 확립된 기존의 방법들에 비해 6종의 글루코코티코이드의 동시분석 방법이 간소화되었고, 좋은 정확도, 정밀도 및 회수율을 나타내었으며, 축산 육류 중에 잔류하는 글루코코티코이드들 분석하는데 사용될 수 있을 것이다.

Keywords

References

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