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철-디피리딜-메페남산 삼원착물을 이용한 메페남산의 정량
남수자,문현숙,이미나,정문모,허문희,안문규,Nam, Su Ja,Moon, Hyun Sook,Lee, Mi Na,Jung, Moon Mo,Hur, Moon Hye,Ahn, Moon Kyu 한국분석과학회 2001 분석과학 Vol.14 No.1
철-디피리딜-메페남산 삼원착물을 이온교환체로, NPOE(o-nitrophenyl octyl ether)를 가소게, PVC[poly(vinyl chloride)]를 지지체로 사용한 메페남산 이온선택성막 전극을 제작하였다. 디피리딜 화합물은 2,2'-디피리딜, 4,4'-디피리딜 그리고 4,4'-디페닐-2,2'-디피리딜을 이용하였다. 이들 막전극은 pH 8.9의 붕산완충액 중에서 $10^{-5}{\sim}10^{-3}mol/L$ 농도의 메페남산에 대하여 감응전위가 -55.98, -49.47 그리고 -59.35mV/decade를 각각 나타내는 직선성이었다. 방향족 및 지방족 카복실산염의 존재는 전극의 감응에 지장을 주지 않았다. A PVC membrane electrodes based on Fe(II)-dipyridyl-mefenamic acid ternary complex as ion exchanger were prepared using o-nitrophenyl octyl ether as a plasticizer. The 2,2'-dipyridyl, 4,4'-dipyridyl and 4,4'-dipyridyl-2,2'-dipyridyl were used as dipyridyl derivative ligand. The electrode dxhibits a fast stable and linear response for $10^{-5}-10^{-3}mol/L$ mefenamate with an anionic slope of -55.98, -49.47, -59.35mV/decade in pH 8.9 borate buffer solution respectively. Potentiometric selectivity measurements revealed negligible interferences from aromatic and aliphatic carboxylic acid salts.
PVC 액체막 전극을 이용한 Norfloxacin의 정량
김동오(D O Kim),남수자(S J Nam),문현숙(H S Moon),정문모(M M Jung),허문희(M H Hur),김대병(D B Kim),안문규(M K Ahn) 대한약학회 2000 약학회지 Vol.44 No.5
The present method is to describe a potentiometric norfloxacin electrode system characterized by a membrane, based on the use of norfloxacin (NF) complex with ion-association reagents. These complexes were dissolved in DMSO, DMF, acetonitrile or acetone and dispersed in plasticized poly(vinyl chloride) matrix. The picric acid complex electrode exhibited near-Nernstian response for NF in acetate buffer solution (pH 4.0) with a slope of 53.03mV/decade. And linear response over the range of 10-5 to 10-3M solution of NF. The ingredients in tablet, capsule and biological important organic acids were not interfere.
파라퀴논 유도체와의 전하이동착물 형성을 이용한 에녹사신 정량
이지연(J. Y. Lee),김동오(D. O. Kim),남수자(S. J. Nam),정문모(M. M. Jung),허문회(M. H. Hur),안문규(M. K. Ahn) 대한약학회 1999 약학회지 Vol.43 No.4
Enoxacin[1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-1,8-naphthyridine-3-carboxylic acid, ENX is a new quinolone antibacterial agent. The method is based on the highly colored charge-transfer complex formation of this drug as a pi-electron donor with 7,7,8,8-tetracyanoquinodimethane(TCNQ) or chloranil(CL) as pi-acceptors. The colored products were measured spectrophotometrically at 842nm and 552nm for TCNQ and CL, respectively. The different experimental conditions are optimized. The linearities for TCNQ and CL were 1.6mcg/mL~32mcg/mL and 6.4mcg/mL~160mcg/mL, respectively and colors were produced in non-aqueous media. This report describes a simple and rapid method for the analysis of enoxacin.
이온교환체로서 금속-페난드롤린-메페남산 3원 착물을 이용한 메페남산의 정량
허문회(Moon Hye Hur),김대병(Dae Byung Kim),남수자(Soo Ja Nam),문현숙(Hyun Sook Moon),이미나(Mi Na Lee),정문모(Moon Mo Jung),안문규(Moon Kyu Ahn) 대한약학회 2001 약학회지 Vol.45 No.1
A method for the determination of anionic drug, mefenamate with ion-selective electrode using Fe(II)-1,10-phenanthroline chelate as a counter ion was developed. Benzyl nitrophenyl ether (BNPE) plasticized membrane was more selective and sensitive than the other tested membranes. This membrane electrode exhibits a linear response for 10-2 M~5 ×10-5 M of mefenamic acid with a slope of - 61.4mV/dec. in borate buffer sloutions (Ph 9.0). Potentiometric selectivity measurements revealed negligible interferences from various organic and ionorganic anions. Direct potentiometry and potentiometric titration method of mefenamic acid in capsule preparations are presented and compared.