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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Analytical Science and Technology
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Journal DOI :
The Korean Society of Analytical Science
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Volume & Issues
Volume 13, Issue 6 - 00 2000
Volume 13, Issue 5 - 00 2000
Volume 13, Issue 4 - 00 2000
Volume 13, Issue 3 - 00 2000
Volume 13, Issue 2 - 00 2000
Volume 13, Issue 1 - 00 2000
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Uncertainty in Measurements and Analyses (3) - Expression and Calculation of Uncertainty in Measurements and Analyses (3) - Expression and Calculation of Uncertainty by the International Rule ( GUM ) -
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 57~57
Chemiluminescence Method by Continuous Flow Injection
Kim, Yeong-Sang ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 70~70
Thermoluminescence Dating of Pottery Shards by Subtraction Method
Shin, Hyun-Sang ; Lee, Chang-Woo ; Nam, Young-Mee ; Jee, Kwang-Yong ; Park, Byung-Bin ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 403~411
This study described a method of thermoluminescence dating of pottery shards using subtraction method. TL measurement was achieved using two different types of samples prepared by quartz inclusion method and fine-grain technique. Fine grains (size range:
) were separated by suspending grounded pottery samples into acetone solution and sedimentation quantitatively. In quartz inclusion method quartz grains in the size range of 90 to
diameter were obtained by extracting the quartz crystals embed in the pottery shards and etching them with 1.0 M HF solutions. The archaeological dose of both the quartz and fine grains was determined from the dose calibration curves obtained from sequential irradiation of
alpha source to the samples and TL measurement of natural samples, in which the alpha dose of 4.60 Gy for the Packjae pottery was obtained using subtraction method. Annual alpha dose rates (
mGy/yr.) were determined by the analysis of U, Th contents in the pottery shards and evaluation of the values with Bell's equation. Dividing the alpha dose accumulated in the pottery shards by the annual alpha dose rate, we found age of approximately
years B.P. (AD. ca. 492 yr.) for the Packjae pottery. It matches well with the archeological age estimate (middle of 5th century) within 10 percent uncertainty and thereby conforms the age of the pottery sample.
Semiquantitative Dynamic Headspace GC-MS Analysis for Organic Compounds Outgassed from FAB Materials of Air Shower
Park, Hyun-Mee ; Baig, Soung-Woo ; Kim, Young-Man ; Lee, Kang-Bong ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 412~422
The polymeric FAB materials of air shower used in clean room of wafer industry have been outgassed with the dynamic headspace (ca.
) for half an hour, and analyzed using GC-MS. The air in the clean room running air shower was sampled using sorbent tube method, and the organic compounds adsorbed in the sorbent tube were extracted using Soxhlet extraction method, and analyzed using GC-MS. The analytical results from FAB materials of air shower (electric over current relay, acryl plate. polycarbonate window, filter, fan housing, steel galvanized cold plate and canvas buffer) indicated that most of chemicals were originated from polymer fragments of FAB materials. Their analytical results have been compared with those from the air of clean room running air shower. These comparative results could lead to identify whether the sources of trace organic contaminants in clean room air are originated from the polymeric FAB material of air shower.
Determination of Total Arsenic in Drinking Water by Inductively Coupled Plasma-Mass Spectrometry
Lim, Yoo-Ree ; Park, Kyung-Su ; Yoon, Yang-Hee ; Kim, Sun-Tae ; Chung, Jin-Ho ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 423~427
Total arsenic in drinking water such as spring, small water-supply system and mineral water was determined by inductively coupled plasma mass spectrometry. The contents of total arsenic were analyzed after acidification by nitric acid to become 1% in water samples. According to the results, total concentration of arsenic in drinking water was below 30ppb.
Cesium Ion-Selective Electrode Based on Upper-rim Calixcrown Ionophore
Namgung, Miok ; Ihm, Hyejae ; Paek, Kyungsoo ; Yun, Youngja ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 428~432
A PVC membrane electrode based on upper-rim calixcrown as ionophore was prepared using dioctyl sebacate (DOS) as a plasticizer. The potential response of this membrane electrode to alkali, alkaline earth metal cations were examined. This membrane electrode exhibited a Nemstian response to
of CsCI with a slope of 52.3 mV/decade in Tris-buffer(pH 7.20). Its response time (
) was 10s and it could be used for at least 2 months.
Adsorption Studies of Nickel(II) Ions onto Amorphous Alumina
Park, Yeong Jae ; Suh, Moo Yul ; Park, Kyoung Kyun ; Choi, Kwang Soon ; Jee, Kwang Yong ; Kim, Won Ho ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 433~439
Adsorption behaviors of Ni(II) ions were investigated using amorphous alumina as adsorbent. In the adsorption kinetic study, it was observed that Ni(II) ions were bound to the alumina surface in two adsorption stages, the rapid and slow adsorption stages. The rapid adsorption proceeded within 1 hr, thereafter the slow adsorption occurred. The results of adsorption isotherm experiments showed that the Ni(II) adsorption obeyed the Langmuir-Freundlich isotherm, and that the adsorption enhanced with increasing pH. The change in ionic strength did not exhibit a conspicuous trend in Ni(II) adsorption, thereby suggesting that the adsorption occurs through surface complexation rather than electrostatic interactions. The amounts of adsorption were measured with varying pH at three different Ni(II) concentrations under the condition of constant ionic strength, showing that with increasing Ni(II) concentration, the percentage of adsorption decreased and the adsorption edge was shifted to a higher pH value.
Techniques for Handling Uranium Particles with Micro-tools
Pyo, Hyung-Ryul ; Park, Yong-Joon ; Sohn, Se-Chul ; Jeon, Young-Shin ; Song, Byoung-Chul ; Jee, Kwang-Yong ; Kim, Won-Ho ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 440~445
The techniques for manipulation of various micro-tools were essential for particle isolation and chemical analysis of micro-size particles. This report described the detailed techniques for the preparation and handling of several micro-tools. Presence of uranium particles in smeared filter paper were identified by using the solid track detector. The uranium particles were isolated using the micro-tools under the stereomicroscope and then transferred to the filament of TIMS for the determination of isotope ratios.
Determination of Fission Products in Simulated Nuclear Spent Fuels by Cation.Anion Exchange Chromatography and Inductively Coupled Plasma Atomic Emission Spectrometry
Choi, Kwang Soon ; Sohn, Se Chul ; Pyo, Hyung Yeol ; Suh, Moo Yul ; Kim, Do Yang ; Park, Yang Soon ; Jee, Kwang Yong ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 446~452
The simulated nuclear spent fuel (SIMFUEL) containing the platinum group elements which will not be dissolved in a nitric acid was completely dissolved with a acid digestion bomb. The metallic elements separated in the SIMFUEL were measured by inductively coupled plasma atomic emission spectrometry (ICP-AES). Because the peaks of metallic elements were spectrally interfered by uranium spectrum, uranium and metallic elements were separated by cation exchange resin for Mo, Pd, Rh and Ru and by anion exchange resin for Ba, Ce, La, Nd, Rh, Sr, Y and Zr, respectively. The recovery of Mo, Pd, Rh and Ru after separation by cation exchange chromatography found to be 99-103% and anion exchange separation showed 96.5-107% of recovery except Y with the simulated solution whose concentration was similar to the spent nuclear fuel. The relative standard deviation of this method showed 1.3-6.7% in the SIMFUEL whose concentrations of metallic elements were between several
A Study on the Analysis of Polycyclic Aromatic Hydrocarbons in Air
Pyo, Hee-Soo ; Hong, Jee-Eon ; Lee, Kang-Jin ; Park, Song-Ja ; Lee, Won ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 453~465
Polycyclic aromatic hydrocarbons (PAHs) were produced by thermoreaction (incompletely combustion) of organic compounds such as fuel, gasoline, diesel etc, and were known the strong carcinogenic compounds. In our country, a study for health risk assessment of PAHs in air were needed according to rapidly increasing of motor vehicle and progressing to industrial country. In this study, concentrations of PAHs in 263 air samples of fourteen sites-Seoul, Pusan, etc-according to four times sampling for one year are measured by GC/MSD for basic research for health risk assessment. As the result, 14 PAHs are detected in all samples and annual average concentration of total PAHs was
and highest average concentration of total PARs was
in winter season. The concentrations of total PAHs are proportioned to amount of extracted organic material (EOM). The average concentration of total PAHs in EOM was 0.28%.
Determination of Complex Formation Constant of Sodium-Selective Ionophores in Solvent Polymeric Membranes
Kang, Tae Young ; Kim, Sung Bae ; Oh, Hyon Joon ; Han, Sang Hyun ; Cha, Geun Sig ; Nam, Hakhyun ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 466~473
The complex formation constants (
) of potassium and various sodium-selective neutral carriers in solvent polymeric membranes have been determined using solvent polymeric membrane-based optodes and ion-selective electrodes (ISEs). Two different types of PVC-based membranes containing the H^+selective chromoionophore (ETH 5294) with and without a sodium ionophore (4-tert-bntylcalixarenetetraacetic acid tetraethyl ester, ETH 2120, bis[(12-crown-4)methyl] dodecylmethylmalonate or monensin methyl ester) were prepared and their optical responses to either the changes in alkali metal cation (e.g., sodium and potassium) concentrations at a fixed pH (0.05 M Tris-HCl, pH 7.2) or varying pH at a fixed alkali metal cation concentration (0.1 M) were measured. The same type of membranes were also mounted in conventional electrode body and their potentiometric responses to varying pH at a fixed alkali metal cation concentration (0.1 M) were measured. The complex formation constants of the ligand could be calculated from the calibration plots of the relative absorbance vs. the activity ratios of cation and proton (
) and of the emf vs. pH. It was confirmed that the ratio values of the complex formation constants for the primary and interfering ions are closely related to the experimental selectivity coefficients of ISEs.
Characteristic Feature of Inductively Coupled Plasma Atomic Emission Spectrometer/Shielding System and Evaluation of Its Applicability to Analysis of Radioactive Materials
Lee, Chang Heon ; Suh, Moo Yul ; Choi, Kae Chun ; Park, Yang Soon ; Jee, Kwang Yong ; Kim, Won Ho ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 474~483
An inductively coupled plasma atomic emission spectrometer/shielding system was specially designed and built for the analysis of radioactive materials. Both of an inductively coupled plasma source and a sample transfer system to be contacted with radioactive materials was installed in a stainless steel glove box. In terms of analytical capability and radiation safety, characteristic feature of the system was investigated. Its applicability to the determination of fission products and corrosion products in the radioactive materials such as spent fuel dissolver solution and the primary coolant of nuclear power reactors was evaluated. In the concentration range
, the relative standard deviation was found to be less than 5%.
Analytical Determination of Alkylphenols, Chlorophenols and Bisphenol A in Biota Samples using Gas Chromatography/Mass Spectrometry
Hong, Jongki ; Kim, Hyup ; Baek, In-Girl ; Kim, Do-Gyun ; Seo, Jung-Joo ; Seo, Jong-Bok ; Chung, Bong-Chul ; Pyo, Hee-Soo ; Kim, Kyung-Rae ; Kim, Yong-Hwa ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 484~493
The simultaneous analysis of alkylphenols, chlorophenols and bisphenol A in biota samples was performed by gas chromatography-mass spectrometry-selected ion monitoring mode. The phenols were extracted from sample with organic solvent and Forisil and Silica columns for clean-up procedure were compared. Recovery studies were performed at 1-ppm level of phenols added to each biota sample. Their recoveries ranged between 83 and 116% with coefficient of variations of 2.4-11.9%. To improve the detection limits of phenols, trimethylsilyl (TMS) derivatization was applied. The gas chromatographic properties of free phenols and TMS derivatized phenols were also investigated.
Solution Structure of 21-Residue Peptide (Asp 84-Leu 104), Functional Site derived from
Lee, Ho-Jin ; Ahn, In-Ae ; Ro, Seonggu ; Choi, Young-Sang ; Yoon, Chang No ; Lee, Kang-Bong ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 494~503
A 21-residue peptide corresponding to amino acids 84-104 of
, the tumor suppressor, has been synthesized and its structure was studied by Circular Dichroism,
NMR spectroscopy and molecular modeling. A p16-derived peptide (84-104 amino acids) forming stable complex with CDK4 and CDK6 inhibits the ability of CDK4/6 to phosphorylate pRb in vitro, and blocks cell-cycle progression through G1/S phase as shown in the function of the full-length p16. Its NMR spectral data including NOEs,
chemical shift, the average amplitude of amide chemical shift oscillation and temperature coefficients indicate that the secondary structure of a p16-derived peptide is similar to that of the same region of full-length p16, which consists of helix-turn-helix structure. The 3-D distance geometry structure based on NOE-hased distance and torsion angle restraints is characterized by
-turn conformation between residues
) as evidenced in a single crystal structure for the corresponding region of p18 or p19, but is undefined at both the N and C termini. This compact and rigid
-turn region is considered to stabilize the structure of p16-derived peptide and serve as a site recognizing cyelin dependent kinase, and this well-defined
-turn structure could be utilized for the design of anti-cancer drug candidates.
Estimation of Impurities from Commercially Available Glycyrrhizin Standards by the HPLC/ESI-MS
Myung, Seung-Woon ; Min, Hye-Ki ; Kim, Myungsoo ; Kim, Young Lim ; Park, Seong-Soo ; Cho, Jung Hee ; Lee, Jong-Chul ; Cho, Hyun-Woo ; Kim, Taek-Jae ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 504~510
The impurity profiles from the raw materials of glycyrrhizin were performed by the high performance liquid chromatography (HPLC)/electrospray ionization (ESI)- mass spectrometry (MS). For the HPLC experiment, a
) column was used and the mobile phase was acetic acid/
(1:10):acetonitrile=3:2 with a flow rate of 0.8 ml/min. The effluent was splitted into the ratio of 50:1 and went into the ESI-MS. Three to six impurities were found and informed of the identification of the structure of the impurities by ESI-MS. And the structures of impurities were suggested to a hydroxy-glycyrrhizin which is added with hydroxy group (-OH) in the glycyrrhetic acid moiety and a reduced-glycyrrhizin which the position of 12 of the glycyrrhetic acid moiety is reduced. The purities of the standard materials were about 90%.
Extraction of PCBs by Subcritical Water Extraction
Kwak, Dong Hwan ; Moon, Ji Yong ; Lee, Sung In ; Jeong, Gi Ho ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 511~519
Water in the supercritical state (
atm) is a good solvent for nonorganic pollutants, but it is extremely corrosive. Subcritical Water Extraction (SWE) is a very fast and an efficient method to extract nonpolar environmental pollutants adsorbed on the sediments and soils. Many nonpolar organic compounds are sufficiently soluble to be extracted to the water under subcritical conditions. Complete extraction of PCBs from the sediments and soils takes only a few minutes by applying SWE with the subcritical water at 50 atm and at
Congener Specific Characteristics of PCBs and PCDD/Fs and Risk Assesment for Human Milk of Korea
Yang, Yoon-Hee ; Chang, Yoon-Seok ; Kim, Byung-Hoon ; Yang, Ji-Yoen ; Shin, Dong-Chun ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 520~533
We analyzed the PCDD/Fs and PCBs in human milk samples from a city and an industrial region by HRGC/HRMS. The average concentrations of PCDD/Fs and PCBs in human milk were 15.13 TEQ pg/g fat and 5.64 TEQ pg/g fat respectively. We discovered two kinds of homologue distributions. We compared congeners of each distributions with those of the commercial PCBs products. The daily intake of infant was predicted to be 60 TEQpg/kg/day according to the mean concentration of PCDD/Fs based on primipara. This value is much higher than the estimated range for background exposure to adult in the USA (1-3 TEQ pg/g fat).
Synthesis and Structural Analysis of a New Layered Cobalt(II) Compound with p-Toluenesulfonic Acid :
Kim, Chong-Hyeak ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 534~538
The title compound,
, has been prepared and characterized by X-ray crystallography. The crystal structure of the compound demonstrates a layered material constituted by hexaaquacobalt (II) cations and p-toluenesulfonate anions. Geometrical environment of the cobalt atom is octahedrally coordinated by water molecules. The p-toluenesulfonate anions are arranged with the sulfonate groups turned toward opposite side of the layer, alternately. The layered structure is stabilized by the hydrogen bondings between the ligated water molecules and the anionic sulfonate oxygen atoms.
Quantitative Aspects of 2D Carbon-13 INADEQUATE Experiment of Organic Molecules
Lee, Sueg-Geun ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 539~543
The quantitative aspects of 2D carbon-13 INADEQUATE (Incredible Natural Abundance DoublE QUAntum Transfer Experiment) experiment were studied on the basis of the time needed in various concentrations of samples. In order to evaluate the quantitative time of this experiment, eight compounds were selected (M. W. ca. 150-500). The effect on time needed of various concentrations showed exponential decay function, Y=
The Application of Activated Alumina for the Selective Analysis of Cr(III) and Cr(VI)
Lim, Heon-Sung ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 13, issue 4, 2000, Pages 544~547
By using surface modified activated alumina with AI(III) and flame atomic absorption spectrometry, a rapid and convenient method for the selective analysis of chromium (III) and chromium (VI) in water has been developed. This technique appears to work accurately under optimum pH range from 3 to 5.