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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Analytical Science and Technology
Journal Basic Information
Journal DOI :
The Korean Society of Analytical Science
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Volume & Issues
Volume 12, Issue 6 - 00 1999
Volume 12, Issue 5 - 00 1999
Volume 12, Issue 4 - 00 1999
Volume 12, Issue 3 - 00 1999
Volume 12, Issue 2 - 00 1999
Volume 12, Issue 1 - 00 1999
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Development of Conductivity Cell and Suppressor for Capillary Column Ion Chromatography
Pyo, Dongjin ; Kim, Hohyun ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 89~93
In this study, conductivity cell and suppressor for micro-column ion chromatography were developed to analyze ions in small columns of samples. With a capillary column, the flow rate of the mobile phase is so small (usually
) that the usual conductivity cell can not be used. Therefore, we developed a new type of conductivity cell and suppressor which have small inner volumes. The conductivity cell was made with two Pt hypodermic needles (i.d. 0.010 mm) which are slightly separated (about
), and the suppressor was made of Nafion tubings. When several anions(fluoride, nitrite, nitrate, chlorate) were analyzed using developed conductivity cell and suppressor, a good chromatogram was obtained.
Analysis of Gases in Nuclear Fuel Rod by Quadrupole Mass Spectrometry
Kim, Seung-Soo ; Kang, Moon-Ja ; Park, Soon-Dal ; Park, Yong-Joon ; Joe, Kih-Soo ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 94~98
An analysis method of components and isotopic compositions of low pressure gases from nuclear fuel rod using quadrupole mass spectrometer was studied. The calibration curves of each gas in pure and mixtures of He,
, Ar, Kr and Xe were obtained as a function of pressure and concentration, respectively. Effect of molecular leak, located between sample chamber and analyser chamber, on the sensitivites was also studied. The results suggested that samples could be analysed accurately at the same analytical condition as that of synthetic gas mixture. The difference of sensitivities among isotopes of Kr and Xe was not observed in the range of measured pressure.
Determination of Some Inorganic Anions in Saline Water by Ion Chromatography with UV Detection
Han, Sun Ho ; Park, Yang Soon ; Park, Soon Dal ; Joe, Kih Soo ; Eom, Tae Yoon ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 99~104
A stepwise gradient elution with two wavelengths detection was performed for the separation and determination of some anions in saline water. The eight anions such as iodate, bromate, nitrite, bromide, nitrate, chromate, iodide and thiocyanate were successfully separated using AS-7 column and sodium chloride/sodium phosphate buffer solution as an eluant within 40 min. The separation behaviors of anions were studied at various sodium chloride concentrations. The peak shapes of anions of bromate, nitrite, bromide and nitrate gradually broadened as the concentration of sodium chloride increased until 1.0 M in the sample solutions. However, no effect was observed in the peak shapes of chromate, iodide and thiocynate. A good linearity was obtained at the range of ppm(mg/L). The detection limit was proved to be
for the eight anions with
injection volume. This method was applied to the determination of
in sea water.
A Study on the Surface and Antibacterial Properties for M(Cd, Cu)-Activated Carbon
Oh, Won-Chun ; Kim, Jong-Gyu ; Kim, Myung-Kun ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 105~110
The studies on the adsorption properties and the antibacterial effects of the Cd and Cu-treated activated carbon were carried out. From the adsorption studies on the series of these metal-treated activated carbons, typical Type-I isotherm was observed. The surface areas of the treated carbon obtained from BET equation were in the range of
for Cd-AC and of
for Cu-AC. Using
-plot, the micropore volumes and pore size distribution were obtained. From the SEM study, it is also observed that many of micropores in activated carbon are blocked by window blocking effect of metals after the impregnation. Finally, antibacterial effects of M-activated carbon against Escherichia coli was discussed. From the study, the area of antibacterial activity becomes larger with the increase of the amount of metal treated.
Ion Chromatography of Anions with Indirect UV-Photometric Detection by using Naphthalene Trisulfonic Acid and Naphthalene Disulfonic Acid as an Eluent
Lee, Kwang-Pill ; Cheon, Hwi-Kyung ; Seo, Hyun-Kyung ; Kwon, Se-Mog ; Park, Keung-Shik ; Tanaka, Kazuhiko ; Ohta, Kazutoku ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 111~115
Single column anion chromatography by indirect UV detection was applied to the determination of 7 common anions(
). A low capacity silica-based anion-exchange column(TSK guardgel QAE-SW; ca. 0.3 meq./g; 4.6 mm i.d
150 mm) was used. In separating common anions, we compared naphthalene trisulfonic acid(NTS) and naphthalene disulfonic acid(NDS) to find more sensitive, selective and rapid separation method. And cations and anions can be separated simultaneously in 0.20 mM NTS-5% acetonitrile-water.
Adsorption Characteristics of the Heavy Metals, Cd(II) and Pb(II) Ions, on the Si-Immobilized Ulva pertusa
Park, Kwang-Ha ; Park, Mi-A ; Kim, Young-Ha ; Choi, Bong-Jong ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 116~124
Adsorption characteristics of heavy metal ions, Cd(II) and Pb(II), on eastcoast-living algae, ulva pertusa, has been studied in our experiment. The Maximum adsorption amount of Cd(II) and Pb(II) ions on 1 g of the ulva pertusa were 2.3 mg, 3.1 mg in alkaline and 2.0 mg, 2.8 mg in acidic solution. However 3.4 mg, 7.3 mg in alkaline and 3.1 mg, 6.5 mg in acidic solution were shown on the Si-immobilized ulva pertusa in the same condition. Thus, Si-immobilized ulva pertusa adsorbs more amount of heavy metals, Cd(II), Pb(II), than the ulva pertusa, and more effective absorbent in alkaline. Furthermore, more amounts of Pb(II) ion were absorbed compare to Cd(II) ion in our work. Recovery ratio of Cd(II) and Pb(II) ions on the ulva pertusa were 55.0~61.0%, 59.7~66.8% respectively and 87.6~97.5%, 83.5~99.3% on the Si-immobilized ulva pertusa.
Development of Portable-Type Electrode for the Determination of Highly Concentrated Hydrogen Peroxide
Lee, Jin Seo ; Cui, Gang ; Kim, Sang Jin ; Cha, Geun Sig ; Nam, Hakhyun ; Rho, Kyung Lae ; Kim, Jin Doo ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 125~129
Portable-type two electrode system for the determination of highly concentrated hydrogen peroxide (10-75%) has been studied. The electrode body was made with teflon rod (length=10 cm, diameter=1.5 cm) to withstand the highly corrosive power of hydrogen peroxide. Glass carbon rod (diameter=3 mm) was used as the working electrode and a carbon cylinder (i.d.=5 mm; o.d.=9 mm) was used as counter electrode. The applied voltage for the determination of
was 0.8 V. Diluting the highly concentrated samples taken from the industrial batch to 10% or less, it was possible to make quantitative determinations, while eliminating the interference from the stabilizer contained in the sample and preventing the surface of the electrode from oxidative corrosion. Employing hydrogen peroxide permeable membrane (teflon membrane
) for the electrode system, it was possible to measure the content of
in highly concentrated samples directly, quantitatively and reproducibly with no extra dilution step. However, it was necessary to change the internal electrolyte frequently to maintain the analytical performance of the electrode.
Determination of Arsenic, Lead and Selenium in Rice Flour by Graphite Furnace Atomic Absorption Spectrometry
Cho, Kyung-Haeng ; Suh, Jung-Ki ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 130~135
A graphite furnace atomic absorption spectrometry (GFAAS) with matrix modification has been used to determine trace amounts of arsenic, lead and selenium in rice flour samples. A mixed solution of palladium and magnesium nitrate was used as a matrix modifier to convert the analyte elements into a phase of higher thermostability and to increase the volatility of concomitants in graphite furnace. Matrix modification effects by the mixed solution were investigated for several elements (As, Cd, Cu, Pb, Se, Zn). It has been found that the matrix modifier substantially increase the pyrolysis and atomization temperature, and absorbance for As, Pb and Se. The concentration of As, Pb and Se in rice flour samples were determined by standard addition method with Zeeman background correction after microwave acid digestion. In this method the characteristic concentrations of As, Pb and Se are 26 ng/g, 18 ng/g, 24 ng/g on the basis of dry sample respectively.
Isolation and Gas Chromatographic Analysis of Lupenone and Lupeol from Sorbus Cortex
Lee, Sang-Myoung ; Lee, Cheal-Gyu ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 136~140
Lupenone and lupeol, the triterpenoids of Sorbus Cortex, were isolated with silica gel column chromatography and used as the standard substances for the quantitative analysis. The compounds were identified with IR, NMR, EI-MS. They were separated on VA-5MS [(5%-phenyl)methylpolysiloxane,
] column by gas-chromatograph. The contents of lupeone and lupeol in three different samples of Sorbus Cortex were in the range of 0.050~0.056% and 0.772~0.834%, respectively.
A Study on the Characteristic Trace of Water Quality Pollutants in the Industrial Wastewater
Park, Sun Ku ; Kim, Sung Soo ; Ko, Oh Suk ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 141~150
Twenty organic chemical substances, tetrachloroethylene, toluene, ethylbenzene, p-xylene, m-xylene, isopropyl benzene, stylene, bromobenzene, 1,3,5-trimethylbenzene, 2-chlorotoluene 1,2,4-trimethylbenzene, p-isopropyltoluene, 4-chlorotoluene, n-butylbenzene, 1,2,4-trichlorobenzene, naphthalene, tert-butylbenzene, sec-butylbenzene, phenol, isopropyl benzene hydroperoxide were isolated from untreated and treated wastewater collected at 76 companys of 9 types industry in the basin of Young San River. Their organic compounds were elucidated by Gas Chromatography/Mass Spectrometry (GC/MS) and by comparison with each standard reagents. Especially, phenol compound is detected from effluent water but not detected from plant wastewater in the chemical industry. Heavy metal, which are Cr, Mn, Cu, Zn, Cd, Pb, As, Al and Fe, are contained in the plant wastewater of all industry, Fe, Al of them is more detected than the other metals in plant wastewater. Cr, Cd, Pb, As is contained much in plant wastewater of electricity and electron, metal molding industry. Nine metals is nearely treated when plant wastewater is treated, and then the concentration of each other metals is detected below water quality standard or not detected by using AA.
A Study on Quantitation of Polychlorinated Biphenyls (PCBs) in Sediments
Shin, Ho-Sang ; Oh-Shin, Yunsuk ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 151~158
This study was conducted to measure the residual PCBs in sediments of 4 great rivers in Korea by gas chromatography-mass spectrometry. From the results, PCBs were positively detected in all samples. The residue levels of total PCBs in sediments in near of SS and OS were
, respectively. The PCBs contamination may be in association with total organic compound (TOC) in sediments. Congener 66, 74, 90, 101, 105, 110, 118, 138, 149, 153, 180, 187 as IUPAC No were predominant species found in sediments and the polyCBs detected most aboundantly in sediments were tetraCBs and pentaCBs. From the study, it appears that the PCBs contamination in sediments of 4 great rivers is not serious and the analysis from enough many sites is needed for the next survey.
Adsorption and Separation of Ag(I) Using a Merrifield Resin Bound NTOE, NDOE in Aqueous Solution
Lee, Cheal-Gyu ; Kim, Hae Joong ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 159~165
The adsorption and separation behaviors of transition metal ions using a merrifield resin bound 1,12-diaza-3,4:9,10-dibenzo-5,8-dioxacyclopentadecane (NTOE) and 1,12,15-triaza-3,4:9,10-dibenzo-5,8-dioxacycloheptadecane(NDOE) were investigated in aqueous solution. The orders of adsorption degree(E) and distribution ratio(D) of transition metal ions were Cu(II)
) of metal ions were affected by adsorption degree(E) and distribution ratio(D). This results showed good separation efficiency of Ag(I) from mixed metal solution.
A Comparative Study on Thermal Efficiency Between the Present Floor and a Ceramic Floor
Kim, Young Man ; Kim, Kyung Sung ; Choi, Beom Suk ; Ko, Jae Sik ; Park, Seung Ku ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 166~170
A ceramic floor with improved thermal conductivity and efficiency has been developed in this study. The new ceramic floor minimizes the shrinkage rate to below 0.07% and shows almost no cleavage. There is no need to repaire the ceramic floor because its bottom surface is flat. It especially shows an excellent perfomance in the test of a compressive strength (
based on 28 days), a flexural strength (
based on 28 days), and a convenient pressing. It is lighter than the present floor and it is expected to be applicable for a self-leveling ceramic motar in the residences and apartments. It shows an excellent character in the thermal conductivity and other physical properties compare to the present cement mortar.
Voltammetric Determination of Ag(I) ion using Carbon Paste Electrode Modified with
Lee, Ihn Chong ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 171~175
Carbon paste electrodes, modified with podands containing more than two sulfur atoms, have been employed for the voltammetric determination of Ag(I) ion from aqueous solution. The voltammetric response was characterized with respect to paste composition, preconcentration method, kind of anion, variation of pH, Ag(I) ion concentration, and possible interferences. Linear calibration curves were obtained for Ag(I) ion concentration ranging from
, and detection limit was
Review : Certification System of Automated DO , COD and BOD Instrument for Measure of Pollutant in Water
Park, Seon-Gu ;
Analytical Science and Technology, volume 12, issue 2, 1999, Pages 177~177