- P-ISSN 1225-0163
- E-ISSN 2288-8985
박막흐름전지 (TLFC)의 작업전극인 유리질 탄소전극 (GCE; A=0.208 cm2) 표면에 5 μL의 HgO 피복용액 (0.5% HgO + 0.25% polystyrene /cyclohexanone)을 피복시키고 pH 4.5 acetate buffer를 흘려주면서 -0.40 V에서 300초간 전해시켰을 때 doxorubicin의 전기환원에 대하여 최대의 감도를 나타내는 수은피막 박막흐름전지 (MFTLFC)를 제작할 수 있었다. MFTLFC에서 doxorubicin은 Ag/AgCl (3 M NaCl)에 대하여 -0.53 V에 이르러 확산전류 (Id)값을 주었으며 수식하지 않은 GCE를 사용한 박막흐름전지 (TLFC)에서 보다 1.7배 더 큰 Id를 나타내었다. 봉우리 면적 (전하)을 doxorubicin 과 daunorubicin 표준용액 농도에 대하여 도시한 결과, 1.0 10-8 M ~ 1.0 10-6 M 농도범위에서 검량인자는 각각 1.12 108 μC/M (상관계수: 0.969) 과 0.98 108 μC/M (상관계수: 0.999)이었다.
The mercury film thin layer flow cell (MFTLFC) which yielded the highest sensitivity for the electrochemical reduction of doxorubicin was constructed by coating the glassy carbon working electrode (GCE; A=0.208 cm2) with 5 μL of HgO coating solution (0.5% HgO + 0.25% polystyrene /cyclohexanone) and subsequently followed by applying a potential of -0.40 V for 300 sec in the flow stream of an acetate buffer of pH 4.5. The voltammogram of doxorubicin reached the diffusion current plateau at -0.53 V vs. a Ag/AgCl (3 M NaCl) in the MFTLFC. The diffusion current (Id) of doxorubicin at the MFTLFC was 1.7 times greater than the Id obtained at the TLFC employing a bare glassy carbon working electrode. When the peak areas (electric charge) were plotted vs. concentrations of standard anthracyclines, the calibration factors of doxorubicin and daunorubicin were 1.12 108 μC/M (coefficient of determination; R2: 0.969) and 0.98 108 μC/M (R2: 0.999), respectively in the concentration range between 1.0 × 10-8 M and 1.0 × 10-6 M.
(2000) 항생물질의약품기준, 약업신문사
(2000) U. S. Pharmacopeia & National Formulary, National Publishing
(2000) British Pharmacopoeia, The Stationery Office
(1997) European Pharmacopoeia, Council of Europe