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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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Environmental Analysis & Human Health Risk Assessment(Ⅰ) - Analysis & Risk Assessment of Chlorinated Disinfection By-products in Drinking Water -
Pyo, Hui-Su ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 89~89
Monitoring and Analytical Techniques for the Discharged Radiocarbon from Nuclear Facility
Chun, Sang-Ki ; Kim, Nak-Bae ; Kim, Kun-Han ; Choi, Su-Young ; Park, Chan-Jo ; Lee, Joung-Dae ; Shin, Jang-Sik ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 693~698
The object of this series of experiments was aimed for the systematic and long-term radioactivity monitoring through indirect search of C-14 concentration level changes in the natural conditions around the operating nuclear facilities. The result of environmental radioactivity level through tree-ring analysis is increased after operating nuclear facilities and such a level can be proved to relate power generation closely. The measured result of
through the treatment of cellulose can be showed the level -30‰. This figure is very different from one which is measured the -17‰ of air sample by passive air sampling and -8‰ of air sample by active air sampling. And these differences can be assumed as isotope fractionation by photosynthesis, but the problem is more study as needed.
Electrochemical Destruction of Cyanide Ions and Recovery of Zinc Ions from Electroplating Wastewater
Niu, Lin ; Ro, Byung-Ho ; Jung, Cheul ; Lee, Yong-Ill ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 699~704
A study has been made for the electrochemical destruction of cyanide ions and removal of zinc ions from a simulated electroplating wastewater by the use of a platinum platized-titanium anode and a stainless steel cathode. Several experimental parameters, including electrolysis time, cell current, additives, and chloride concentration, have been investigated and used for efficient destruction of cyanide waste and removal of zinc ions from aqueous solutions. It was found that cell current and type of additives gave great effects on the destruction of cyanide ions and removal of zinc ions. The optimized conditions (electrolysis time: 1hr, current: 12A, additive: 0.5 M NaCl) have been defined to destroy cyanide ions and remove zinc ions with high efficiency and low operation cost. The proper reaction mechanism leading to the destruction of cyanide on the anode has also been discussed.
Anode Properties of Boron Doped Polyacene Derived from Phenolic Resin
Oh, Won-Chun ; Park, Seung-Huyk ; Kim, Bum-Soo ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 705~711
We have studied the structural characterization, surface morphology and electrical properties for boron dopped polyacene anode material from phenolic resin for lithium secondary battery. The boron dopped anode material were characterized as boron contents of 5, 10, 15 and 20%, respectively. From the X-ray results, the all kinds of compounds were observed for the diffraction patterns for typical amorphous carbons. The SEM morphology showed formation of semi spherical granule for the boron dopped compounds. As the result of the electrical charge/discharge and impedance data, the 10 and 15% boron dopped materials showed good properties on the ions and electron transfer effect of battery.
by Leaching from
Molten Salt in Distilled Water
Woo, Mun-Sik ; Yoo, Jae-Hyung ; Park, Hyun-Soo ; Kang, Young-Ho ; Kwon, Soo-Han ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 712~721
(63-30-7 mol%) molten salt was dissolved up to 0.02g in 1ml of distilled water at room temperature.
oxide made from
through pyrohydrolysis was recovered by leaching in distilled water with
molten salt including it at room temperature. The crystalline sharpness of recovered
oxide was not damaged.
Gas Chromatographic Analysis on Residual Concentration and Half-life Time of Cyfluthrin in Potato and Soil
Han, Seong Soo ; Jeong, Seung Il ; Chun, Hyun Ja ; Hoang, Geun Chang ; Kim, Il Kwang ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 722~730
The residual concentration and half-life time of synthetic pyrethroid insecticide cyfluthrin in potato and soil were investigated by gas chromatography (GC). The pesticide in potato was extracted with n-hexane, filtered and concentrated. The concentrated phase was transferred to the Sep-Pak silica gel column and purified with acetonitrile and acetone for the analysis by gas chromatography equipped with electron capture detector (GC-ECD). From the standard additional experiments with 0.01 and
, the recoveries were 85-87% and the detection limit was 0.005 ng. The soil sample was extracted with acetone and dichloromethane. The organic phase was concentrated and redissolved with n-hexane and analyzed with GC-ECD after cleaned with Sep-Pak column. From the standard additional experiments with 0.01 and 0.1 ng, the recoveries were 84-88% and the detection limit was 0.005ng. The half-life time of cyfluthrin in the silty clay was 25 days in the room laboratory and 0.6 days in the fieJd test whereas it was 38 days and 0.5 days for each in case of silty loam.
A Study on the Acid Digestion Bomb Pretreatment Method of Fire Retardant Chemicals (DBDPE-
) for the Determination of Antimony
Choi, Jong-Keum ; Park, Je-An ; Park, Kyung-Su ; Kim, Sun-Tae ; Kim, Young-Sang ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 731~735
The acid digestion bomb pretreatment method for the determination of antimony in a commercial fire retardant material sample (DBDPE-
) was studied. DBDPE-
sample was digested with
(1:2) mixture in digestion bomb at
for 2 hrs. and antimony was determined by atomic absorption spectrophotometry. Recovery of 99.6-99.8% and C.V. of 0.94-1.07% for Sb was obtained for spiked real samples. In the present method, the analytical results obtained for antimony were 40.3 and 36.3% (w/w), respectively.
Determination of Homocysteine, Methionine, Cysteine in Human Plasma with SPME/GC-MS
Yoo, Eun-Ah ; Kim, Jung-Soo ; Myung, Seung-Woon ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 736~742
The purpose of this study was to determine the homocysteine (Hey), methionine (Met) and cysteine (Cys) using solid phase micro-extraction (SPME)/gas chromatography (GC)-mass spectrometry (MS) in human plasma and to correlate between the plasma concentration of homocysteine with coronary artery disease. The homocysteine, methionine and cysteine in blood can be used as biomarkers for the risk assessment of vascular disease. The plasma homocysteine level for the coronary artery disease patients was higher than general patients. The concentration ranges of the Hcy, Met and Cys for coronary artery disease patients were
, respectively. This method showed good sensitivity and convenience.
A New Aluminium Container for
-Ray Spectrometry Analysis of Radium and Radon
Lee, Kil Yong ; Yoon, Yoon Yeol ; Seo, Bum Kyoung ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 743~750
-ray spectrometry analysis of radium and radon in environmental samples, plastic Marinelli beakers have been usually used. But, there are two problems; one is the increment of background by adsorption of airborne radon daughters on the plastic beaker, and other is the incompleteness of radioactive equilibrium by the loss of gaseous radon produced during the radioactive equilibrium process. In order to solve these problems, we made aluminium counting container, and investigated its characteristics. We investigated radioactive equilibrium process using the aluminium container. We found that both solid and liquid samples reached at radioactive equilibrium state in the aluminium container without loss of gaseous radon. By the use of the aluminium container, we established radon and radium analysis method of solid and liquid samples using gamma-ray spectrometry.
A Study on the Dissolution and Separation for the Quantitative Analysis of Iodide in Spent Nuclear Fuel
Choi, Ke Chon ; Lee, Chang Heon ; Song, Byang Chol ; Park, Yang Soon ; Jee, Kwang Yong ; Kim, Won Ho ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 751~758
A study was carried out on the dissolution of spent PWR fuels and performed on the fuels and the separation of iodide for the quantitative analysis using SIMFUEL which has chemical composition of a simulated spent PWR fuel (burn-up; 35,000 MWd/MTU and cooling time; 10 years). To dissolve the SIMFUEL effectively and to minimize the formation of volatile iodine through dissolution process, the optimum ratio of mixed acid (
80: 20 mol%) was established and ozone gas was purged. In the separation step of iodine with
was used for reducing
.The optimum acidity of the dissolved solution and the added of
were 2.5 M and more than
, respectively. The recovery of iodide by ion chromatography was
and the total yield was corrected by gamma spectrometery using
as a tracer.
Separation of Zr metal from
Molten Salt by Electrowinning
Woo, Mun-Sik ; Yoo, Jae-Hyung ; Kwon, Soo-Han ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 759~765
A study on the separation of Zr metal from
(67-27-6 mol%) molten salt was carried out using electrowinning. The decomposition potentials of the
(72-28 mol%) and the
(67-27-6 mol%) molten salts were measured to be -1.55 and -1.35 volt, respectively. The Zr separation voltage from the salt were found to be in a range of -1.4 -1.5 volt. As increasing applied current, the deposition of molten salt on a cathode increases but the current efficiency decreases. In addition, the deposition and current efficiency decreases with increasing temperature.
Determination of Metal Elements in Mongolian Chromite
Choi, Kwang Soon ; Lee, Chang Heon ; Pyo, Hyung Yeol ; Park, Soon Dal ; Joe, Kih Soo ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 766~774
The major and trace constituents of Mongolian chromite were analyzed by ICP-AES. The dissolution procedures, mixed acid (
) digestion and fusion with
flux, have been studied to dissolve the chromite. The optimum dissolution method was found to be a fusion with
flux. The effect of large amount of Na on major and trace constituents was examined when these elements were determined by ICP-AES. There was no effect on major elements at a concentration of Na 250 mg/L solution. The emission intensity of trace constituents containing Na 1,250 mg/L decreased to 1.0-5.2% according to elements and wavelengths. The result of this method was compared with that of neutron activation analysis (NAA) to confirm the accuracy of this procedure. The results between two methods were in a good agreement within less than 5% for
, MgO and -20 to 8% for Co, Mn, V, Zn, respectively.
Measurement of Electrical Conductivity of Glass Melter at High Temperature
Kim, Taesam ; Kil, Daesup ; Jung, Hunsaeng ; Kang, Eunhee ; Yoon, Soksung ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 775~780
The electrical conductivity of glass melter at high temperature has been measured. The conductivity is an important physical property for the research and the manufacturing process of glass. Because high temperature is an inconvenient situation to measure the conductivity of glass melter, we have made a platinum crucible and electrode and have measured the conductivity at high temperature. KCl solution, of which concentration is adjusted to the conductivity of glass melter, is used to get parameters of the conductivity cell. A measuring circuit is composed with an AC 1 kHz sine wave generator and an operational amplifier. The cell constants are determined from the measured voltages and the equivalent conductances of KCl solution. Various cells are tested to find a suitable shape for high temperature experiment. The results are compared by cell size, electrode depth, and cell configuration. The conductivity of the borosilicate melter is
Direct Determination of Tellurium in Simulated Nuclear Spent Fuels by Hydride Generation-Inductively Coupled Plasma Atomic Emission Spectrometry
Choi, Kwang Soon ; Lee, Chang Heon ; Han, Sun Ho ; Joe, Kih Soo ; Kim, Won Ho ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 781~788
Tellurium in simulated nuclear spent fuels (SIMFUEL) has been determined by hydride generation-inductively coupled plasma atomic emission spectrometry (HG-ICP-AES). Parameters such as concentrations of HCl and
, flow rate of HCl and
were optimized and then the effects of U, Mo, Pd, Rh and Ru on the Te intensity were investigated. A thiourea as a masking agent was used to eliminate or minimize such interferences specially caused by palladium. Tellurium was measured by HG-ICP-AES and ICP-MS after separation of tellurium from SIMFUEL with cation exchange chromatography. The relative deviation between direct measurement and separation method was less than 6% based on the data by ICP-MS.
Analysis of PCDDs/PCDFs in Sediment by Isotope Dilution HRGC/HRMS
Jang, Seong Ki ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 789~801
This analysis was conducted for PCDDs/PCDFs in sediment by isotope dilution HRGC/HRMS method. From the result, the mean recovery of surrogate standard was in the range of 70.1-80.8%. Among the distribution of 2, 3, 7, 8-substituted isomers, the concentration of OCDD represented almost 40.6-78.5% of total concentration and that of OCDF showed 6.6-14.7% and 1, 2, 3, 4, 6, 7, 8-HpCDD showed 5.1-7.7%. The portion of PCDDs represented 62.4-86.9% of total PCDDs/PCDFs. In the TEQ concentration 1, 2, 3, 4, 7, 8-PeCDF concentration represented 22.7-35.6 % of total TEQ concentration.
Polychlorinated Biphenyl Contaminations of Water, Soils and Sediments Sampled from Various Places of Korea
Park, Hyun-Mee ; Ryu, Jae-Chun ; Kim, Young-Man ; Lee, Kang-Bong ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 802~809
Concentrations of polychlorinated biphenyl congeners (PCBs) in samples collected from 43 kindss of water, 35 kinds of soil and 11 kinds of sediment in various place of Korea have been monitored using GC/MS/SIM analytical method. In our investigation, mean recoveries were
for soil and sediment samples and
for the spiked
-PCBs. Detection limits of PCBs for water, soil and sediment samples are 0.01 ng/ml and 0.05 ng/g. PCB congeners in water samples were not detected within quantitation limit, but trace amounts were detected in most of soil and sediment samples. The contamination level of PCBs in Korea was evaluated to be lower than in advanced countries like USA, Europe and Japan.
Synthesis, Protonation Constants and Stability Constants for Transition Metal ions(II) of 1, 15-Bis(2-Hydroxybenzyl)-2, 6, 10, 14-Tetraazapentadecane
Kim, Sun-Deuk ; Kim, Jun-Kwang ; Lee, Woo-Sik ;
Analytical Science and Technology, volume 13, issue 6, 2000, Pages 810~814
The open-chain hexadentate
ligands 1, 15-bis(2-hydroxybenzyl)-2, 6, 10, 14-tetraazapentadecane (BSATPD. 4HCl) has been synthesized as its tetrahydro-chloride salt and characterized by EA, IR, NMR, and Mass spectrum. Its protonation constants (
) and stability constants (
ions were determined in aqueous solution by potentiometry and compared with those of analogous
ligands contain ethtylenic spacers or propylenic spacers, which make six-membered chelate rings between the aliphatic nitrogen atoms.