http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
문형실,김종혁,이석근,Moon, Hyoung-Sil,Kim, Chong-Hyeak,Lee, Sueg-Geun 한국분석과학회 2001 분석과학 Vol.14 No.6
One-dimensional coordination polymer of cadmium(II) complex, $[Cd(SCN)_2(C_4H_6N_2]_n$, has been prepared and characterized by X-ray single crystallography. Structure analysis reveals that each cadmium(II) atom is six-coordinated in distorted octahedral fashion with $CdS_2N_4$ composition. $CdS_2N_4$ composition contains two S and two N atoms from four thiocyanates and tow N atoms from two 4-methylimidazole ligands. Central cadmium(II) atoms are run in parallel to the a-axis and are doubly bridged with neighboring cadmium(II) atoms by the thiocyanate and isothiocyanate ligands. Thus, this complex has a one-dimensional polymer structure in which the 4-methylimidazole is in the trans conformation.
김종혁,문형실,이석근 한국분석과학회 2008 분석과학 Vol.21 No.6
A novel two-dimensional cadmium(II)-nickel(II) bimetallic host clathrate, [Cd{NH2CH2CH2OH}2Ni(CN)4]· 3C6H5NH2·H2O, 1, has been synthesized and structurally characterized by X-ray single crystallographic method. The clathrate 1 crystallizes in the monoclinic system, space group P21/c with a = 14.370(3), b = 7.728(1), c = 28.172(4) Å, β = 97.58(1)°, V = 3101.1(9) Å3, Z = 4. The host framework of the clathrate 1 is built of the cyanide bridges between octahedral Cd(II) atom and square planar Ni(II) atom. The octahedral Cd atoms ligated by two 2-aminoethanol molecules and four cyanide ligands bridged with square planar Ni atoms. The Ni atoms bridges to four Cd atoms via cyanides is made up of puckered quadrangles of composition {CdNi(CN)2}2, all edges are shared. This cyanide bridges form an infinite two-dimensional host networks stacking along b axis. 2-Aminoethanol ligands bond to Cd atom through N atom as a monodentate ligand in the axial position and four cyanides take an equatorial plane with all in trans-configurations. The aniline guest molecules and water molecules are located in between the host layer sheets, respectively
HPLC-MS에 의한 Tri-Octyl Amine(TOA)의 방사선 분해산물 정량
양한범,문형실,이일희 한국분석과학회 2005 분석과학 Vol.18 No.3
Tri-octyl amine (TOA) is used in solvent extraction process for radioactive waste. This compound may be degraded to di-octyl amine (DOA), mono-octyl amine (MOA) by radioactive materials. Amount of TOA, DOA and MOA in TOA must be monitored because they production of these compounds means degradation of which leads to a decrease in the extraction yield. Retention behavior for TOA, DOA and MOA are studied with Phenomenex LUNA-C18 (4.6mm25cm) analytical column and CH3OH:H2O (50mmol CH3COONH4) eluent by liquid chromatography. Optimum condition for these compounds is CH3OH:H2O (50 mmol CH3COONH4)=85:15 ratio. TOA, DOA and MOA compounds is well separated within 20minute. Dynamic range is 30~160g/mL for TOA, 5~100g/mL for DOA and 0.1~5g/mL for MOA, respectively. The detection limit are 0.1g/mL for TOA, 1g/mL for DOA (in SCAN mode) and 0.1g/mL for MOA (in SIM mode) in this system with 20L sample loop.
Np(5) 용매추출에 미치는 방사선에 의한 TBP 추출제의 분해생성물 영향
양한범 ( Han Beom Yang ),한선호 ( Sun Ho Han ),이일희 ( Il Hee Lee ),문형실 ( Houng Sil Moon ) 한국공업화학회 2003 공업화학 Vol.14 No.2
금속원소의 용매추출제로 사용되는 tributyl phosphate (TBP)를 ^60Co r-선을 조사시킨 후, TBP의 방사선 분해생성물인 dibutyl phosphate(DBP), monobutyl phosphate (MBP) 및 TBP를 LC-MS로 정량분석하였다. TBP 추출제의 방사선분해가 Np(Ⅴ) 추출에 미치는 영향에 대한 실험하였다. 1M TBP 추출제의 방사선 흡수 선량이 1×10^7 rad 일 때 Np(Ⅴ) 추출율은 0.8%이지만 1×10^8 rad일 때는 52.7%로 급격히 증가하였으며, 증가 원인은 TBP의 방사선 분해 생성물인 DBP가 Np(Ⅴ) 추출율은 각각 0.5%와 86%이며, 0.5M DBP에 TBP 또는 MBP를 첨가시키는 경우에 Np(Ⅴ)의 추출율이 감소되는 추출 방해현상(antagonism)이 나타났다. NpO_2^+ -1M HNO_3-DBP 추출계에서 유기상으로 추출되는 화학종은 NpO_2NO_3·DBP으로 밝혀졌다. Np(Ⅴ)의 환원제로 1M H_2O_2를 사용한 경우에 Np(Ⅴ)은 TBP에 추출이 잘되는 Np(Ⅳ)로 환원되어 추출율이 91.3%까지 증가하였다. This study was carried out to evaluate the effect of radiolysis of tributyl phosphate (TBP) extractant on the extraction of neptunium(Ⅴ) in HNO_3 solution. The contents of DBP and MBP, the degradation products of TBP, were analyzed with LC-MS (liquid chromatography - mass spectrometry). The effects of radiolysis products (DBP and MBP) and H_2O_2 reductant in this extraction system were discussed. The radiolysis effect of 1M TBP on the extraction yields of Np(Ⅴ) was shown to vary with the radiation absorbed dose. The extraction yields of Np(Ⅴ) increased abruptly from 0.8% at 1×10^7 rad to 52.7% at 1×10^8 rad because of the TBP degradation product, DBP, formed a strong complex with Np(Ⅴ). When TBP or MBP was added in the Np(Ⅴ)-1M HNO_3-0.5M DBP extraction system, antagonism phenomena appeared which diminished the extraction yields of Np(Ⅴ). In the NpO_2^+-01M HNO_3-DBP extraction system, the chemical species extracted was NpO_2NO_3·3DBP.