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The analysis of pharmaceuticals in drinking water by HPLC/ESI-MS/MS

HPLC/ESI-MS/MS에 의한 먹는물(정수) 중 의약물질의 분석

  • Received : 2010.07.28
  • Accepted : 2010.09.20
  • Published : 2010.10.25

Abstract

The analytical method of four pharmaceuticals (virginiamycin, erythromycin, tylosin and cimetidine) in drinking water was developed. Effective simultaneous sample clean-up and extraction by solid-phase extraction (SPE) using HLB cartridge prior to LC/ESI-MS/MS analysis were performed. A linear correlation observed in the calibration curves for drinking water in the range of 0.01~2.0 ng/mL showed above $r^2$=0.995. Absolute recovery was in the range of 64.7~118.1% (except cimetidine (37.7~48.1%)). Limit of detection (LOD) and limit of quantitation (LOQ) in spiked drinking water matrix were in the range of 1.6~74.8 pg/mL and 5.5~249.7 pg/mL, respectively. The established method can be used to determine low pg/mL levels of pharmaceuticals in the drinking water.

먹는물(정수) 중에 잔류하는 버지니아마이신을 비롯한 macrolide 계열 의약물질 3종과 시메티딘을 동시에 정량 및 정성 분석하는 방법을 확립하였다. HLB 카트리지를 사용하여 분석물질을 추출/정제 및 농축한 후, HPLC/ESI-MS/MS를 이용하여 4종의 물질들을 효과적으로 분리하고 감도 좋게 검출할 수 있었다. 정량분석을 위해서 0.01~2.0 ng/mL 범위에서 $r^2$=0.995이상의 높은 직선성을 나타내는 검량선을 얻었으며, 시메티딘(37.7~48.1%)을 제외한 macrolide 계열 3종 의약물질은 64.7~118.1% 범위의 양호한 회수율을 나타내었다. 바탕 정수에 소량 첨가하여 얻은 분석방법의 검출한계와 정량한계는 각각 1.6~74.8 pg/mL 와 5.5~249.7 pg/mL 범위의 높은 감도를 나타내었다.

Keywords

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