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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.
이온교환체로서 금속 -디 -2-피리딜케톤옥침 -산성의약품 3원 착물을 이용한 산성의약품의 정량
안문규(Moon Kyu Ahn),오원정(Won Jung Oh),이언경(Eon Kyung Lee),이순영(Soon Young Lee),이재윤(Jae Yun Lee),정문모(Moon Mo Jung),허문희(Moon Hye Hur) 대한약학회 2002 약학회지 Vol.46 No.5
A method for the determination of acidic drug, mefenamic acid and ibuprofen with ion- selective electrode(ISE) using Fe(ll)-di-2-pyridyl ketone oxime complex as a counter ion were developed. Benzyl-2-nitrophenyl ether(BNPE) plasticized membrane was more selective and sensitive than the other tested membranes. The acidic drug selective electrode exhibits a linear response for 10-2 M 510-5 M of acidic drugs, mefenamic acid and ibuprofen with a slope of -55.9 and -56.3 mV/dec. in borate buffer solution (pH 8.9). Potentiometric selectivity measurements revealed negligible interferences from aromatic and aliphatic carboxylic acid salts. The electrodes were found to be useful for the direct determination of mefenamic acid and ibuprofen in pharmaceutical preparations.
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.
이지연(Ji Yeun Lee),정문모(Moon Mo Jung),허문회(Moon Hye Hur),김은정(Eun Jung Kim),안문규(Moon Kyu Ahn) 대한약학회 1999 약학회지 Vol.43 No.3
Many poly (vinyl chloride: PVC) membrane electrodes were investigated for the determination of basic drugs, chlorpromazine, amitriptyline, nortriptyline, etc. These electrodes are based on the use of the ion-association complexes of the basic drugs with eriochrome cyanine R, chromoxane cyanine, chrome azurol S and picric acid as ion-exchange sites in a plasticized PVC matrix. All ion-exchangers except picrate complex were not proper for use, because those complexes in plasticized membrane were excluded into aqueous working solution. These drug electodes show excellent Nernstian responses in the concentration range 10-2~10-6. Their selectivity with respect to each other, as well as their workable pH range have been investigated. The major advantages of the proposed methods are their simplicity and speed.
이지연(Ji Yeoun Lee),정문모(Moon Mo Jung),허문회(Moon Hye Hur),안문규(Moon Kyu Ahn) 대한약학회 1998 약학회지 Vol.42 No.3
A method for the determination of basic drugs based on their reaction with picric acid to form an ion-association complex extractable into several plasticizers was developed. Basic drugs-picric acid complexes in acid medium could be extracted quantitatively into several plasticizers except phosphates. For example, the chlorpromazine-picric acid complex showed maximum absorbance at near 410nm and was applied to extraction spectrophotometric determination of chlorpromazine. The calibration curves are linear (r>0.998) within a range from 10-6 to 5 X 10-4M and the precision of the method was acceptable because RSD was less than 2.6% (n=7). The factors affecting the extraction system was discussed.