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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 11, Issue 6 - 00 1998
Volume 11, Issue 5 - 00 1998
Volume 11, Issue 4 - 00 1998
Volume 11, Issue 3 - 00 1998
Volume 11, Issue 2 - 00 1998
Volume 11, Issue 1 - 00 1998
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Enrichment of Lithium Isotope by Novel Ion Exchanger Containing Azacrown Ether as Anchor Group
Kim, Dong Won ; Lee, Nam-Soo ; Jeong, Young Kyu ; Ryu, Haiil ; Kim, Chang Suk ; Kim, Bong Gyun ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 231~234
Separation factor for
has been determined using ion exchange resin having 1,7,13-trioxa-4,10,16-triazacyclooctadecane (
) as an anchor group. The ion exchange capacity of the
ion exchanger was 2.0 meq/g dry resin. The lighter isotope,
, is concentrated in the fluid phase, while the heavier isotope,
, is enriched in the resin phase. By column chromatography [0.3 cm(I.D)
30 cm (height)] using 3.0 M ammonium chloride solution as an eluent, single separation factor,
, 1.018, i.e.
was obtained by the Glueckauf theory from the elution curve and isotope ratios.
Potentiometric Response of Chitin - based Membrane Electrode to various Metal cations
Choi, Bun-Hong ; Yun, Young-Ja ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 235~242
Membrane electrode based on chitin(po1y-[
-N-acetyl-D-glucosamine) was prepared by mixing uniformly grounded of chitin (100 mesh) with PVC and DOS. We investigated the potential response of chitin membrane electrode to metal ions. It was observed that the response slopes for
(34.9 mV/decade) and
(34.0 mV/decade) were larger than those for other ions in pH 4 acetate buffer. The potentiometric response of chitin electrode to varying pH was nearly constant in the pH range of 2~12.
The Development of Cisplatin Analysis Method in Plasma by Flameless Atomic Absorption Spectrometry
Paik, Man-Jeong ; Lim, Ho-Sub ; Jeong, Mi-Jin ; Lee, Kyoung-Ok ; Shin, Ho-Sang ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 243~247
Cisplatin is a platinum-containing antitumor agent with nephrotoxic and neurotoxic side effects. An analytical method for measuring cisplatin in plasma by FAAS was developed, which is rapid, simple and need no sample preparation. The linearity test of calibration curve in the range of 20~1000 ng/mL showed good correlation coefficient of r=0.999. The result of accuracy test appeared to be relative standard deviation of < 5.0% at concentration range from 50 to 1000 ng/mL. When
of plasma was used, detection limit was 10 ng/mL. Therefore, it can be applied for the monitoring in plasma for optimal condition of treatment and reduce of toxicity.
Adsorption and Separation Behaviors of Metal Ions Using a Poly-Dibenzo-18-Crown-6 in Aqueous Solution
Kim, Hae Joong ; Chang, Jeong Ho ; Shin, Young-Kook ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 248~253
The adsorption and separation behaviors of alkali, alkaline earth and transition metal ions using a poly-dibenzo-18-crown-6 were investigated in aqueous solution. The adsorption degree(E) and distribution ratio(D) of alkali, alkaline earth metal ions were Li(I)
) of metal ions were affected by the adsorption degree(E) and distribution ratio(D). This results showed good separation efficiency of K(I), Sr(II), Ag(I) and Pb(II) from the mixed metal solution.
Adsorption Characteristics of Cr(VI) on the Oak Sawdust
Chung, Yongsoon ; Lee, Kangwoo ; Hwang, Jongyeon ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 254~259
The adsorption and reduction characteristics of chromium(VI) by oak sawdust were studied. The optimum adsorption condition is obtained from the measurement of the distribution coefficient(
) and adsorption capacity of Cr(VI) on the sawdust by changing pH of the solution. As a result, it was found that pH 2.0 was optimum because
of Cr(VI) was maximum and reducing quantity was minimum. By the use of these characteristics of the oak sawdust, the removing of Cr(VI) in industrial waste water was examined.
Effect of Supporting Anions on Particle Characteristics of Barium Titanyl Oxalate Formed by Homogeneous Precipitation
Ryu, Kyoungyoul ; Huh, Wooyoung ; Lee, Chul ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 260~265
-sized particles of barium titanyl oxalate were prepared by thermal decomposition of dimethyl oxalate in acidic barium and titanium solutions. Precipitation was carried out in the presence of several supporting anions. Spherical particles having a specific type of particle size distribution. i.e., unimodal or bimodal distribution, with mean size in the range of
, were formed depending on the supporting anions, oxalate ion generation rate and aging time. Particles of barium titanyl oxalate settled on the bottom of the beaker at the aging time of 120 min grew to the critical monosize of about
. XRD spectra and chemical analyses of barium titanate showed that barium titanyl oxalate with high qualities could be synthesized by choosing chloride ion as a supporting anion and increasing the reaction temperatures.
Adsorption and Antibacterial Properties of Metal Treated Activated Carbon
Oh, Won-Chun ; Kim, Bum-Soo ; Lee, Young-Hoon ; Kim, Jong-Gyu ; Kim, Myung-Kun ; Ko, Young-Shin ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 266~270
The Ag-treated activated carbon was prepared by the impregnation of Ag on the home made activated carbon. We investigated the nitrogen adsorption property, surface structure, and antibacterial activity of the carbon. The BET surface areas of Ag impregnated activated carbon are distributed to
region. The results of nitrogen adsorption property show that BET surface areas move gradually to lower value with increasing
mole concentration. From the SEM results, we observed window blocking effect for micropores of external surface of adsorbent by Ag impregnation. Escherichia coli which is a kind of colon bacillus was used as bacteria for antibacterial test. From these results, we also observed that activity increase gradually to larger range with increasing
Preparation and Certification of Rice Flour Reference Materials for Trace Elements Analysis
Cho, Kyung-Haeng ; Park, Chang-Joon ; Woo, Jin-Choon ; Suh, Jung-Ki ; Han, Myung-Sub ; Lee, Jong-Hae ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 271~280
Rice flour reference materials were prepared from the unpolished rice grown in Korea and certified for elemental composition. The reference materials consist of two samples containing normal and high level. The reference material at elevated level was prepared by spiking to the normal rice flour six toxic elements of As, Cd, Cu, Cr, Hg, Pb with
on a dry weight basis. Homogeneity of the prepared materials was evaluated through the determination of Ca, Cu, Fe, Mn, Zn by instrumental neutron activation analysis (INAA) and atomic absorption spectrometry (AAS). Small variance of elemental composition among interbottled samples assured homogeneity of the prepared materials. The materials were decomposed by high pressure digestion and microwave digestion method. INAA, AAS, inductively coupled plasma-atomic absorption spectrometry (ICP-AES), ICP-mass spectrometry (MS) and vapour generation techniques were employed to analyze the reference materials. From this independent analytical results, the certified or reference values are determined for As, Ca, Cd, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, P, Pb, Se, Zn.
A Study of Analytical Method for Trace Metal Ions in Whole Blood and Urine by Inductively Coupled Plasma-Mass Spectrometry using Solid-Liquid Extraction Technique
Lee, Won ; Hur, Young-Hoe ; Park, Kyung-Su ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 281~291
An analytical method for the simultaneous measurement of trace Cu, Sn, and Bi in blood and urine has been investigated by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Microwave oven was used for the pretreatment of blood samples using nitric acid and hydrogen peroxide in a closedvessel digestion system with 1 mL whole blood for 8 minutes. Amberlite IRC-718 resin was used as a solid phase in solid-liquid extraction technique for the removal of matrix interferences such as Na, S, P, and other polyatomic ion species. Detection limits for Cu, Sn, and Bi by this method were 0.000375 ng/mL, 0.000297 ng/mL, and 0.000174 ng/mL, respectively. Recoveries of 99.1% for Cu, 102.5% for Sn, and 98.4% for Bi were obtained for the standard spiked NIST SRM 955a blood sample. The developed method was applied for whole real blood and urine samples.
Separation of Functionalized Heterocyclic Compounds by High Performance Liquid Chromatography (II)
Cho, Yun Jin ; Lee, Young Cheol ; Lee, Kwang-PiII ; Park, Keung-Shik ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 292~296
Normal phase or reversed phase liquid chromatographic separation of isoquinoline of heterocyclic compounds and structural isomers of external substituents,
, CN and
has been carried out by using several different columns and various mobile phases. From this results, the order of elution of heterocyclic compounds appears to depend on the solvent effect with kinds of mobile phases. Retention mechanism of normal phase system for 2-methylindoline, 2-methylindole, benzoxazole and benzothiazole was also studied depending on adsorption strength between solute and stationary phase of column. However, retention factors of reversed phase system were found on hydrophobic interaction with solvophobic effect.
Matrix effect on the Determination of Inorganic Priority Pollutants in Sludges
Lee, Huk-Hee ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 297~304
The three analysis methods, EPA method 3050, the method offered by Ministry of Environment in Korea, and modified method corrected in this laboratory, were studied to investigate the effect of matrix on the analysis of inorganic priority pollutants. 7 inorganic priority pollutants(Ni, Cr, Cu, Zn, Pb, Cd, Hg) were spiked to the plating, leather, paper, electric, and dye sludges. Mean recovery of the elements except Hg was 95.5% when the procedure of EPA method was applied. However, recovery by the two other extraction methods showed 11.1% and 27.7%, respectively. Digestions were done by MDS (microwave digestion system) and
methods. To study organic and inorganic matrix effect, samples were made by adding triethanol amine as a organic matrix and
as a inorganic matrix, respectively. The extracts were analyzed by AAS and HG-AAS. Mean recovery of the elements by the
procedure, except Hg, gave better result than that of the MDS method. Mean recovery of elements was decreased when organic and inorganic matrices were added in the sludge samples. The procedure of MDS and
digestion gave higher recoveries than that of direct analysis. In general, the results of the studies showed a significant matrix effect on the inorganic priority pollutants analysis in sludges.
An Optochemical Sensor for the Determination of Divalent Transition Metal Ions Based on a Reactive Dye
Kim, Sung Bae ; Lee, Hyuk Jin ; Kim, Jin Mog ; Shin, Doo Soon ; Cha, Geun Sig ; Nam, Hakhyun ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 305~310
A reactive dye synthesized with an amine containing Eriochrome Black T derivative and cynauric chloride was immobilized on a cellulose membrane to construct an optical sensor for the detection of divalent transition metal ions in aqueous solution. The response of this reactive dye-based optical sensor was as sensitive as that of Eriochrome Black T in solution phase. Its typical detection limits for
, respectively. No loss in the sensitivity of reactive dye-based sensor was observed even the pH of flowing solutions continually varied for an extended period of time.
Analysis of Ultra Pure Sulfuric Acid for Semiconductor Using High Resolution ICP-MS
Heo, Y.W. ; GiI, J.I. ; Lim, H.B. ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 311~315
Ultra trace metal impurities of high-purity sulfuric acid for semiconductor process have been determined in the concentration of lower than ppb (ng/g) level using high resolution inductively coupled plasma mass spectrometer (HR-ICP-MS).The acid samples were evaporated and concentrated by the factor of 20. No clement in the acids exceeded 1ppb level and most of the clements were determined below 10ppt (pg/g). Elements without spectral interference in mass spectrum, such as In, V, Mn, etc, were determined in the concentration of below 1 ppt level The recoveries in the range of 72% to 127.2% for 0.5 ppb spiked sample were obtained.
Characterization of Ferrous Metal Artifacts by Microstructure Observation
Huh, Wooyoung ; Lee, Chul ;
Analytical Science and Technology, volume 11, issue 4, 1998, Pages 316~320
An image analysis was used for the interpretation of microstructures of ferrous metal artifacts. For the purposes, various microstructural features such as average grain size, phase area, shape factor, and composition of the inclusions, were parameterized for the information about manufacturing techniques such as casting, heating and tempering. The carbon content was determined through the evaluation of the amount of pearlite phase. As the amount of pearlite phase increased the shape factor also increased. Grain size was relatively smaller in trans-section than in cross-section. The manufacturing direction was trans-sectional because the orientation of inclusions was elongated lengthwise. All inclusions was of silicate groups and the manufacturing temperature was estimated up to