Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Determination of Glucose in Whole Blood by Chemiluminescence Method

화학발광법에 의한 전혈 중의 당 정량

  • Lee, Sang Hak (Department of Chemistry, Kyungpook National University) ;
  • Choi, Sang Seob (Department of Industrial Safety, Andong Science College)
  • 이상학 (경북대학교 자연과학대학 화학과) ;
  • 최상섭 (안동과학대학 산업안전학과)
  • Published : 20010600
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Abstract

A method for the determination of glucose in human whole blood by chemiluminescence method using a stopped flow injection system has been studied. The method is based on the differences in the chemiluminescence intensities of luminol due to the different amounts of hydrogen peroxide produced from the glucose oxidase catalyzed reaction. The enzyme reactor was prepared by immobilization of glucose oxidase on aminopropyl glass beads and the chemiluminescence from a flow cell was measured by means of an optical fiber bundle. In order to obtain the optimum experimental conditions, effects of pH for the chemiluminogenic solution and enzyme reactor, flow rate and temperature on the chemiluminescence intensity were investigated. The calibration curve obtained under optimum experimental conditions was linear over the range from $1.0{\times}10^{-1}$ mM to 7.0 mM and the detection limit was $6.0{\times}10^{-2}$ mM. The proposed method was applied to the determination of glucose in whole human blood sample and the results were compared with those obtained by an official method. The present method was also evaluated by the results of recovery experiments.

흐름주입 장치를 이용하여 화학발광법에 의한 전혈 중의 당을 정량하는 방법에 대하여 연구하였다. 당의 효소반응에서 생성되는 과산화수소에 의하여 424nm에서 발생하는 luminol의 화학발광 세기의 차이를 정량에 이용하였다. 효소반응기는 glucose oxidase를 aminopropyl glass bead에 혼입하여 만들었으며, 흐름셀에서 발생하는 화학발광의 세기는 광섬유 다발을 이용하여 측정하였다. 최적 실험조건을 구하기 위하여 화학발광 시약 및 효소반응기의 pH, 흐름속도 및 온도가 화학발광세기에 미치는 영향을 조사하였다. 최적실험조건에서 구한 검정 곡선은 $1.0{\times}10^{-1}$~ 7.0mM에서 직선성이 성립하였으며, 검출한계는 $6.0{\times}10^{-2}$mM이었다. 본 방법을 전혈 중의 당 정량에 적용하였으며, 그 결과를 기존의 분석법에서 구한 결과와 비교하였다. 또한, 회수율 측정을 통하여 본 방법의 신뢰성을 검증하였다.

Keywords

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