Ion-Pair High Performance Liquid Chromatographic Retention Behavior of Mercury(Ⅱ)-4,7,13,18-tetraoxa-1,10-diazabicyclo[8,5,5]eicosane Complex and Selective Determination of the Mercuric Ion in Waste Water by Forming of the Complex

정용순,이강우,Jeong, Yong Sun,Lee, Gang U Korean Chemical Society 2000 Bulletin of the Korean Chemical Society Vol.21 No.3

Tri-n-butylphosphate를 침윤시킨 Polyurethane Foam에 의한 유기화합물의 흡수현상

鄭龍淳 慶尙大學校 1982 論文集 Vol.21 No.1

Absorption phenomena of organic compounds by open-pore polyurethane (OPP) foam impregnated with tri-n-butylphosphate (TBP) was studied by measuring the distribution coefficients (Kb). The Kds of benzoic acid and its monoderivatives by TBP-OPP foam were larger than that by OPP foam from 2 to 4.3 times, and compounds which have more hydrophilic group such as hydroxyl group had larger Kd. It was found that OPP foam in TBP-OPP foam was only supporter when organic compounds were absorbed by TBP-OPP foam.

이온교환수지에 의한 철의 선택적 분리 및 정량

정용순,김동원,김성호,이대운,Yong Soon Chung,Dong Won Kim,Seung Ho Kim,Dai Woon Lee 대한화학회 1987 대한화학회지 Vol.31 No.1

Calcon carboxylic acid[2-hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid;CCA)]를 이온교환시킨 Dowex 1-X8수지(CCA-Dowex 1-X8)와 2-methyl-8-hydroxyquinoline(MHQ)을 침윤시킨 Amberlite XAD-4 수지(MHQ-XAD-4)를 여러가지 매질중에 있는 철(Ⅲ)이온의 분리-농축에 사용하였다. 이들 수지의 안정성을 검토하고 철(Ⅲ)이온에 대한 흡착능을 측정하였다. 매트릭수의 주성분인 Al(Ⅲ), Ca(Ⅱ), 및 Fe(Ⅲ)들의 수지에 대한 흡착성을 pH를 변화시키며 조사하여 최적 pH범위를 결정하였다. 용리법으로 알루미늄호일과 초정약수중 미량의 철분을 매트릭스 이온으로부터 분리-농축하였다. 농축된 Fe(Ⅲ)는 소량의 강산으로 용리시켜 불꽃 원자흡광광도법으로 정량하였다. 초정약수중의 Fe(Ⅱ)와 Fe(Ⅲ) 이온들은 SP-Sephadex C-25컬럼으로 농축하고, ferrozine용액과 1% ascorbic acid-ferrozine용액으로 단계적 용리법에 의해 용리시킴으로써 각각을 분리할 수 있었다. 분리된 각 이온들은 Fe(Ⅲ)-ferrozine착물의 분석 파장인 562nm에서 분광 광도법으로 정량하였다. Dowex 1-X8 resin ion exchanged with calcon carboxylic acid (CCA-Dowex 1-X8) and 2-methyl-8-hydroxyquinoline(MHQ) impregnated-Amberlite XAD-4 resin (MHQ-XAD-4) were examined for the separation and preconcentration of ferric ion from the various matrices. The stabilities of these resins were investigated, and their capacities on ferric ion were also measured. The effect of pH on the adsorption of ferric ion and matrix ions, such as Al(Ⅲ) and Ca(Ⅱ), was investigated to determine the optimun pH ranges. Separation and preconcentration of iron in aluminium foil and mineral water samples were studied by elution method with these resin columns. The recovered ions by 10ml of 2F nitric acid was determined by flame atomic spectrophotometry. SP-Sephadex C-25 column was used to separate ferrous and ferric ion in mineral water by stepwise elution with ferrozine and 1 % ascorbic acid-ferrozine solution. The concentrated and separated each ion could be determined spectrophotometrically at the analytical wavelenth of Fe(Ⅱ)-ferrozine complex (562nm).

월남전과 고엽제 소고

정용순 충북대학교 부설 국제관계연구소 1993 國際關係硏究 Vol.6 No.-

본문참고

역상 모세관-고성능 액체 크로마토그래피에 의한 코발트와 니켈 이온의 4-(2-피리딜아조)레조루신올 킬레이트로서의 분리 및 정량

정용순,정원석,Chung, Yong-Soon,Chung, Won-Seog 대한화학회 2003 대한화학회지 Vol.47 No.6

코발트와 니켈 이온을 4-(2-피리딜아조)레조루신올(PAR) 리간드와 킬레이트를 만들고 이 금속-PAR 킬레이트들을 역상 모세관 고성능 액체 크로마토그래피(RP-CpHPLC)로 분리와 정량을 하였다. 컬럼은 주로 Vydac C4 모세관 컬럼을, 이동상은 아세토니트릴(MeCN) 수용액을 사용하였다. 머무름 인자, k와 봉우리 높이에 대한 이동상의 pH와 MeCN 농도의 영향을 검토하여 분리와 정량의 최적 조건을 얻었다. 결과, 분리의 최적 이동상은 22.5% MeCN, pH 5.6이었고, Co(II) 이온의 정량은 이 조건에서 할 수 있었다. 그러나 Ni(II) 이온의 정량은 분리와 봉우리의 높이로부타 22.5% MeCN, pH 7.20이 보다 적합함을 확인하였다. 각각의 조건에서 Co(II)와 Ni(II) 이온의 검출한계(D.L., S/N=3)는 각각 $2.0{\times}10{-7}$ M(14.9 ppb)와 $1.0{\times}10{-6}$ M(59.2 ppb)였다. Separation and determinations of Co(II) and Ni(II) ions as their 4-(2-pyridylazo)resorcinol(PAR) chelates by reversed-phase capillary high-performance liquid chromatography(RP-CpHPLC) were performed. Among many capillary columns, Vydac C4 column was selected and acetonitrile solution was used as mobile phase. The effect of pH and MeCN concentration(%) on the retention factor, k and peak intensity was examined and discussed. As a results, it was found that 22.5% MeCN and pH 5.60 was adequate as mobile phase for the separation of the two metal ions and determination of Co(II) ion, but the mobile phase condition for Ni(II) ion determination was 22.5% MeCN of pH 7.20. Detection limit(D.L., S/N=3) of Co(II) and Ni(II) ions were $2.0{\times}10{-7}$ M(14.9 ppb) and $1.0{\times}10{-6}$ M(59.2 ppb), respectively.

미환경청 분류 11종 상위 환경오염 페놀들의 나이트로소화

정용순,이성춘,本水 昌二 한국분석과학회 2004 분석과학 Vol.17 No.5

Nitrosation of phenol (POH) was studied by adding hydrochloric acid and sodium nitrite to phenol solution with reaction temperature and time change. The optimum condition of nitrosation was found from the effects of hydrochloric acid and sodium nitrite concentration, reaction temperature, and reaction time changes on the production of nitrosophenol(POHNO). As a result, it was found that the optimum conditions were 5.0x10-4~2.0x10-3 M range of NO2- concentration, more than 0.10 M of HCl concentration, temperature of 80 ℃, and 3 hrs. of reaction time. In this condition, 10 U.S. E.P.A. classified priority environmental pollutant, phenols, were nitrosated. Nitrosated phenols were: POH, 2-Chlorophenol(2ClPOH), 2,4-diChlorophenol(2ClPOH), 2,4-dimethylphenol(24diMPOH), and 4-Chloro -3-methylphenol(4Cl3MPOH), and a small part of 2-nitrophenol(2NPOH). The λmax values of nitrosated phenols in acidic solution were around 300 nm, and those in basic solution were around 400 nm. Molar absorptivities(ε) at the 400 nm of the nitrosated phenols in the basic solution were 1.5~2.0 times larger than those at 300 nm in acidic solution. It was also found by Capillary-HPLC chromatograms of the nitrosated phenol solutions that the production of the nitrosophenols were interfered by the excess concentration of nitrite(more than 3.0x10-3 M).

귀금속-티아크라운에테르 착물들의 역상 이온쌍 고성능 액체크로마토그래피 용리거동

정용순,김동원,이강우,김창석,Chung, Yong Soon,Kim, Dong Won,Lee, Kang Woo,Kim, Chang Seok 대한화학회 1998 대한화학회지 Vol.42 No.4

귀금속-티아크라운에테르 착물들의 역상 이온쌍 고성능 액체크로마토그래피(RPIP-HPLC)용리 거동에서 이온쌍 시약의 농도와 리간드 종류 효과를 연구하였다. 귀금속 이온 분석의 선택성은 사용한 티아크라운에테르의 고리를 구성하는 원자들의 수가 작을수록 좋았고, 귀금속-티아크라운에테르 착물의 용리 메카니즘은 이동상 중 이온쌍 시약인 도데실술폰산나트륨염(SDS)의 농도가 10 mM 이하일 경우 이온쌍 형성 메카니즘으로, 10 mM 이상일 경우 미쎌 형성 메카니즘으로 설명되었다. 결론적으로 몇 가지 귀금속-티아크라운에테르 착물들을 최적 조건에서 성공적으로 분리하였고, 흑백사진 정착액 중 Ag(Ⅰ) 이온 분리와 정량에 유용함을 증명하였다. In the reversed-phase ion-pair high performance liquid chromatographic (RPIP-HPLC) elution behavior of noble metal-thiacrown ether complexes, the effects of the concentration of ion-pairing reagent and kind of ligands were studied. It was found that the less the number of atoms in the ring of the thiacrown ether molecule was, the larger the selectivity was, and the elution mechanism of the complexes was explained due to the formation of ion-pair when the concentration of sodium dodecyl sulfate (SDS) in mobile phase was lower than 10 mM and due to the formation of micelle when the SDS concentration was higher than 10 mM. As a conclusion, separations of the noble metal-thiacrown ether complexes in an optimum separation condition were accomplished successfully and the method was proved to be an useful one for the separation and determination of Ag (Ⅰ) ion in a black-white photographic fixing solution.

Amberlite XAD-공중합체를 이용한 살리실산 및 크로마토그래피적 분리 그 유도체들의 액체

정용순,이택혁,문영자,이대운,Yong Soon Chung,Taik Hyuk Lee,Young Ja Moon,Dai Woon Lee 대한화학회 1989 대한화학회지 Vol.33 No.1

살리실산 및 그 유도체들의 Amberlite XAD-4와 XAD-7 수지 분리관에서의 역상 액체크로마토그래피적 용리거동이 고전적 방법과 현대적 고성능 액체크로마토그래피(HPLC)에 의하여 연구되었다. 고전적 크로마토그래피에서는 질산제 2철 용액의 농도를 0.010F 농도로부터 0.150F 농도까지 변화시키면서 50% 메탄올 수용액에서 머무름크기인자(k')를 측정함으로써 용리거동을 설명하였다. 한편, 고성능액체크로마토그래피에서는 pH 2.25와 293K에서 여러가지 비교적 저 농도의 질산제 2철 용액($2.5{\times}10^{-4}F$에서 $1.0{\times}10^{-3}F$까지)과 여러 농도의 메탄올 수용액을 용리액으로 k값들을 측정함으로써 살리실산 및 그 유도체들의 용리메카니즘을 설명하고, 이들의 분리에 대한 최적 조건을 발견하였다. 결과적으로, 철(III)이온 농도가 증가하면 log k'가 비례하여 감소하는 현상을 발견하였는데, 그 감소하는 기울기가 문헌에 보고된 철(III)-살리실산 및 그 유도체착물들의 안정도 상수값들과 관계 있음을 발견하였다. 살리실산유도체들의 몇가지 이성체들을 최적 조건에서 분리하였다. Reverse phase liquid chromatographic elution behaviors of salicylic acid and its derivatives were studied with classical and modern high-performance liquid chromatography(HPLC) using Amberlite XAD-4 and XAD-7 resin packed columns. Capacity factors(k') were determined in the comparatively high concentration(from 0. 010F to 0. 150F) of ferric nitrate-50% methanol solution to elucidate the elution behaviors with classical method. On the other hand, k's were measured in the various concentrations of methanol and ferric nitrate(from $2.5{\times}10^{-4}F\;to\;1.0{\times}10^{-3}F$) solution of pH 2. 25 and 293K with HPLC to explain the elution mechanism of them, and to find their optimum separation condition. As a result, it was found that log k's of salicylic acid and its derivatives were decreased with increasing the concentration of ferric ion, and the decreasing slopes of the compounds on the increasing ferric ion concentrations were related with each stability constant of ferric salicylates. Some isomers of derivatives of salicylic acid could be separated in the optimum condition.

金起林 詩論의 解決學的 考察

廷蓉順 중앙어문학회 1992 語文論集 Vol.22 No.-

김정일을 형상화(形象化)한 북한의 단편소설(短篇小說) -1990년대 전반기(前半期) 『조선문학』을 중심으로-

정용순 한국어문교육연구회 2000 어문연구(語文硏究) Vol.28 No.4