Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Development of the Analytical Method for Diazepam in Fishery Products using Liquid and Gas Chromatography-tandem Mass Spectrometry

LC-MS/MS 및 GC-MS/MS를 활용한 수산물 중 디아제팜의 정량분석법 개발

  • Shin, Dasom (Pesticide and Veterinary Drug Residues Division, National Institute of Food & Drug Safety Evaluation) ;
  • Kang, Hui-Seung (Pesticide and Veterinary Drug Residues Division, National Institute of Food & Drug Safety Evaluation) ;
  • Kim, Joohye (Pesticide and Veterinary Drug Residues Division, National Institute of Food & Drug Safety Evaluation) ;
  • Jeong, Jiyoon (Pesticide and Veterinary Drug Residues Division, National Institute of Food & Drug Safety Evaluation) ;
  • Rhee, Gyu-Seek (Pesticide and Veterinary Drug Residues Division, National Institute of Food & Drug Safety Evaluation)
  • 신다솜 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과) ;
  • 강희승 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과) ;
  • 김주혜 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과) ;
  • 정지윤 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과) ;
  • 이규식 (식품의약품안전처 식품의약품안전평가원 식품위해평가부 잔류물질과)
  • Received : 2017.10.16
  • Accepted : 2018.02.20
  • Published : 2018.04.30
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Abstract

The aim of this study was to develop an analytical method for the quantification of diazepam residues in fishery products, using liquid and gas chromatography-tandem mass spectrometry (LC-MS/MS and GC-MS/MS). The sample utilized in the study was extracted from the fish sample (crucian carp) using 0.1% formic acid in acetonitrile. For the utilization of the purification process, the dispersive solid phase extraction (dSPE) was used for LC-MS/MS, dSPE and SPE was used for GC-MS/MS, respectively. To be sure, the standard calibration curves showed a good linearity as the noted correlation coefficients, $r^2$ was > 0.99. The average recoveries for accuracy ranged in 99.8~124% for the samples which were fortified at three different levels (0.001, 0.002 and 0.010 mg/kg). The correlation coefficient for the precision effect was measured at a range of 4.01~11.8%. The limit of detection (LOD) for the diazepam analysis was 0.0004 mg/kg, and the limit of the quantification (LOQ) was 0.001 mg/kg. The proposed analytical method was characterized with a high accuracy and acceptable sensitivity to meet the established Codex Alimentarius Commission (CAC/GL71-2009) guideline requirements. We therefore established the optimal analysis method for the determination of diazepam in the fishery products using LC-MS/MS and GC-MS/MS. It would be applicable to analyze the diazepam residues in fishery products in further studies on this subject.

본 연구는 국내 생산 및 수입 양식 수산물에 대해 잔류할 수 있는 향정신성 의약품인 디아제팜 대한 안전관리강화기반을 위해 마련되었다. 중국인민공화국 국가 표준시험법(GB 29697-2013)을 기반으로 전처리 방법을 개선하여 GC-MS/MS 시험법을 확립하였으며, LC-MS/MS 방법과의 기기간 검증을 통해 확립된 시험법의 선택성, 정량한계 및 회수율에 대한 검증을 통해 디아제팜 시험법으로서의 유효성을 확인하였다. LC-MS/MS의 경우 아세토니트릴로 추출 후 PSA를 이용해 정제하였고, GC-MS/MS의 경우 아세토니트릴로 추출후 $C_{18}$카트리지를 이용해 정제하였다. 디아제팜은 표준용액을 정량한계를 포함한 농도에 따라 검량선을 작성한 결과 두 기기 모두 $r^2$> 0.99 이상의 직선성을 확인하였다. 본 실험에서의 검출한계와 정량한계는 LC-MS/MS 및 GC-MS/MS 모두 0.0004 mg/kg, 0.001 mg/kg 수준이었으며, 평균 회수율은 각각 99.8~106%, 109~124%이었다. 또한, 분석오차는 모두 15% 이하로 정확성 및 재현성이 우수하였으며, CODEX 가이드라인 규정에 만족하는 수준이었다. 따라서 개발된 시험법은 안전한 수산물의 국내 유통과 잔류실태조사를 위해 활용될 것으로 기대한다.

Keywords

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