Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Simultaneous analysis and occurrences of six pharmaceuticals in surface water by LC/ESI-MS/MS

LC/ESI-MS/MS를 이용한 하천수 중 잔류 6종 의약물질의 동시분석 및 모니터링

  • Received : 2010.12.06
  • Accepted : 2010.12.07
  • Published : 2010.12.25
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Abstract

The extraction/clean-up and concentrating of pharmaceuticals from surface water were performed by HLB (Hydrophilic-Lipophilic Balanced) cartridge. The method allows for the simultaneous determination of six pharmaceuticals by HPLC/ESI(+)-MS/MS. Recoveries of the pharmaceutical were between 71.1 to 92.6% (except fenbendazole) and the overall variability of the method was below 11.2% (RSD). The calibration curves for the pharmaceuticals from blank surface water showed good linearities (above $r^2$ = 0.99) in the concentration range of 0.007~1.2 ng/mL. The limit of detection (LOD) and the limit of quantification (LOQ) were 7.2~128.7 pg/mL and 23.8~429.1 pg/mL, respectively. The present analytical method can be useful for monitoring residual pharmaceuticals in surface water and other aquatic samples. High concentrations of iopromide and fenbendazole were detected in a few samples of surface water.

본 연구에서는 하천수 중 6종의 의약물질(cephradine, cefadroxil, penicillin G, vancomycin, iopromide, and fenbendazole)에 대한 전처리법과 분석 방법을 확립하였다. 하천수 중의 분석물질을 HLB(Hydrophilic-Lipophilic Balanced) 카트리지를 사용하여 추출/정제 및 농축하였다. HPLC/ESI-MS/MS를 이용하여 6종의 물질들을 동시에 분석하였다. Fenbendazole을 제외한 의약물질은 71.1~92.6% 범위의 양호한 회수율을 나타내었고, 상대표준편차는 11.2% 이하로 나타났다. 정량분석을 위해서 0.007~1.2 ng/mL 범위에서 $r^2$=0.99 이상의 높은 직선성을 나타내는 검량선을 얻었다. 검출한계(LOD)와 정량한계(LOQ)는 각각 7.2~128.7 pg/mL, 23.8~429.1 pg/mL로 나타났다. 이 분석 방법은 하천수 중 의약품에 대한 모니터링에 유용하며, 하천수 중 iopromide과 fenbendazole은 높은 농도로 검출되었다.

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