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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
Editor in Chief :
Volume & Issues
Volume 15, Issue 6 - Dec 2002
Volume 15, Issue 5 - Oct 2002
Volume 15, Issue 4 - Aug 2002
Volume 15, Issue 3 - Jun 2002
Volume 15, Issue 2 - Apr 2002
Volume 15, Issue 1 - 00 2002
Selecting the target year
Simultaneous Determination of Fluorene and Anthracene by Synchronous Spectrofluoremetry
Lee, Sang Hak ; Han, Yung Ji ; Son, Bum Mok ; Choi, Jong Ha ; Kim, Chang Jin ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 393~398
A method to determine simultaneously fluorene and anthracene in aqueous solution by synchronous fluorescence spectrometry has been studied. The emission characteristics and optimum wavelength interval (
) for synchronous spectra of fluorene and anthracene in aqueous solution were investigated. The optimum wavelength interval (
) was found to be 50 nm. The calibration curve for fluorene and anthracene in the synthetic mixture solution of both compounds was linear over the range from
for fluorene and anthracene, respectively. The detection limit was
, for fluorene and anthracene, respectively under the optimal wavelength interval.
Analysis of Toxic Heavy Meatals using Hybrid Neural Network in Glow Discharge Atomic Emission Spectroscoy
Lee, J.S. ; Lee, S.C. ; Choi, K.S. ; Kim, Y.S. ; So, S.H. ; Ha, K.J. ; Ryu, D.H. ; Cho, T.H. ; Jung, M.S. ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 399~409
A system software on-line spectral analysis of atomic emission spectrometer. The system program consisted of a control part for the optical instruments and the spectrum analysis part the artificial intelligence method to reduce nonlinear error of the wavelengths. McPHERSON 207 Monochromator controlled GPIB communication protocol, and the detector signal was measured from PMT by using A/D Amplifier that was made by Photon_Tek. co.. HNN(Hybrid Neural Network) of artificial intelligence technique was applied to the qualitative analysis of P, Cu, Fe, Cr, and that was accurately applied to the quantitative analysis of Cd with 10 ppb level better than the conventional methods.
Rapid Quantitative Analysis of Vancomycin in Human Plasma and Urine Using LC-MS/MS
Kim, Hohyun ; Roh, Hyeongjin ; Han, Sang-Beom ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 410~416
In this study, a new quantitative analytical method has been developed for the rapid determination of vancomycin in human plasma and urine using liquid chromatography/tandem mass spectrometry (LC - MS/MS). Chromatography was carried out on a
XTerra MS column (
) with a particle size of
. The mobile phase was 0.25% formic acid in 10% acetonitrile and the flow rate was
. Vancomycin and caffeine (internal standard) were detected by MS/MS using multiple reaction monitoring (MRM). Vancomycin gives a predominant doubly protonated precursor molecule (
) at m/z 725.0 and a corresponding product ion of m/z 100.0. Detection of vancomycin was good, accurate and precise, with a limit of detection of 1 nM in plasma. The calibration curves for vancomycin in human plasma was linear in a concentration range of
for plasma. This method has been successfully applied to determine the concentration of vancomycin in human plasma and urine from pharmacokinetic study and relative studies.
Application of Dynamic Reaction Cell - Inductively Coupled Plasma Mass Spectrometry for the Determination of Calcium by Isotope Dilution Method
Suh, Jungkee ; Yim, Yonghyeon ; Hwang, Euijin ; Lee, Sanghak ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 417~426
Inductively Coupled Plasma Dynamic Reaction Cell Quadrupole Mass Spectrometry (ICP-DRC-QMS) was characterized for the detection of the six naturally occurring calcium isotopes. The effect of the operating conditions of the DRC system was studied to get the best signal-to-noise ratio. This experiment shows that the potentially interfering ions such as
at the calcium masses m/z 40, 42, 43, 44 and 48 were removed by flowing
gas at the rate of 0.7 mL/min
as reactive cell gas in the DRC with a RPq value (rejection parameter) of 0.6. The limits of detection for
were 1, 29, 169, 34, and 15 pg/mL, respectively. This method was applied to the determination of calcium in synthetic food digest samples (CCQM-P13) provided by LGC for international comparison. The isotope dilution method was used for the determination of calcium in the samples. The uncertainty evaluation was performed according to the ISO/GUM and EURACHEM guidelines. The determined mean concentration and its expanded uncertainty of calcium was (
) mg/kg. In order to assess our method, two reference samples, Riverine Water reference sample (NRCC SLRS-3) and Trace Elements in Water reference sample (NIST SRM 1643d), were analyzed.
An Analytical Evaluation on the flue Gas and Combustion Efficiency of Emulsion Fuel
Park, Hyun-Mee ; Eo, Yun-Woo ; Baig, Seung-Woo ; Park, Il Yong ; Paeng, Ki Jung ; Kim, Young-Man ; Lee, Kang-Bong ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 427~432
The combustion behavior of heavy oil and its emulsion with water was evaluated. The concentration of
in the combustion gas of emulsion oil was reduced to 57% with respect to that of the combustion gas from neat heavy oil. Also, the concentration of
in the combustion gas of emulsion oil was reduced to 67% with respect to that of the combustion gas of neat heavy oil. These reductions of
in the combustion gas of emulsion oil seems to be due to the reaction with salts included in surfactant of emulsion oil. Also, the combustion efficiency of emulsion oil is evaluated to be about 6% higher than that of neat heavy oil.
Quality Control on Neutron Activation Analysis for Urban Dust by the Proficiency Test
Moon, Jong-Hwa ; Kim, Sun-Ha ; Chung, Yong-Sam ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 433~438
Trace elements in two air filters (V-50, P-50) artificially loaded with urban dust provided from IAEA were determined non-destructively using instrumental neutron activation analysis. Standard reference material (Urban Particulate Matter, SRM 1648) of National Institute of Standard and Technology was used for analytical quality control. About 20 elements in both of loaded filter samples were determined. To evaluate inter-laboratory comparison and proficiency test, analytical data were statistically treated with the results which collected from 49 laboratories, 40 countries participated in this study using neutron activation analysis, particle induced X-ray emission, inductively coupled plasma mass spectroscopy, etc,. From the results of statistical treatment, Z-scores are within
. Furthermore, accuracy and precision of obtained analytical values are passed according to the criteria of the proficiency test. Consequently, it was proved that analytical quality for air dust samples being performed has been controlled properly.
Effect of NaBH
and HCl on signal intensity of As, Se, Ge with on-line hydride generation system and E-O-V ICP-AES
Nam, Sang-Ho ; Han, Soung-Sim ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 439~444
DE-O-V ICP-AES has been studied for the analytical characteristics of As, Se, and Ge with PN, USN and HG. Effect of
and HCl on the signal intensity of As, Se and Ge with HG and E-O-V ICP-AES were closely investigated. The sensitivities of As, Se and Ge with HG were much greater than those with PN and USN. Accordingly, the detection limits of the elements with HG were lower by a factor of 100 and 10 than PN and USN, respectively.
Determination of total iodide in seawater by gas chromatography-mass spectrometry
Shin, Ueon-Sang ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 445~450
A sensitive gas chromatographic method has been established for the determination of total iodide in seawater as their volatile organic derivative. The method is based on the formation of 4-iodo-2,6-dimethylphenol with 2,6-dimethylphenol in matrix and a single-step extraction of the derivative with ethyl ether, which are then measured by gas chromatography-mass spectrometry (selected ion monitoring). Iodate in sea water was completely reduced to iodide with ascorbic acid and acetic acid. The detection limit was 0.1 ng/mL in seawater and the calibration curve showed good linearity with r=0.9997. The method was sensitive, reproducible and simple enough to permit the reliable routine analysis of total iodide in seawater. Total iodide in sea water was found about 30 ng/ml.
A Study on Nonylphenol, Octylphenol, and Di (2-ethylhexyl)phthalate in Sewage Sludge
Kim, Jong-Hun ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 451~458
Determination were performed for the presence of three common environmental endocrine disrupting compounds (EDC), namely nonylphenol (NP), octylphenol (OP), di (2-ethylhexyl)phthalate in sewage sludge from 67 wastes plants, using Soxhlet extraction and GC/MS-SIM. NP and DEHP were detected in almost every sludges but OP was not detected. The range and mean value for NP of all sludge samples were nd~593,
dry and the two statistic values for DEHP of those were 13~4733,
dry respectively. DEHP content was 20 times greater than NP in sludges. Concentrations of NP and DEHP in sludge from individual area were increased as following order ; Jeolla South and North Province (Cheju) < Chungcheong South and North Province (Kwangwon) < Gyungsang South and North Province < Wide City < Kyunggi Province.
Analysis of Endotoxin Using Analytical Conditions of Optical Density in Metalworking Fluid Sample
Park, Dong-Uk ; Han, In-Young ; Yoon, Chung-Sik ; Park, Doo-Yong ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 459~465
This study was performed to identify the proper analytical conditions of endotoxins regarding optical density in the workplace where metalworking fluids are used. This study found that "onset time method" was more accurate than "time to
method". Reproducibility and accuracy analyzed by "onset time method" was greatly higher than the "time to
". The optical density of "0.03" was the most appropriate analytical condition among "onset time method". In this analytical condition, linearity of 0.998 was obtained and recovery rate ranged from 88% to 105% at the endotoxin concentrations below 5 EU/mL. No significant difference of endotoxins was observed between the optical densities of "0.03" and "0.05". However, correlation coefficients were different with statistical significance (p<0.01). This study confirmed that either the optical densities "0.03" or "0.05" should be used to analyze endotoxin. Of these optical density values, OD with correlation coefficient higher than 0.98 should be used to analyze endotoxin in environmental samples.
Analysis of dioxin-like PCBs in Soil samples
Kim, Kyeo Keun ; Shin, Sun Kyoung ; Kim, Tae Seung ; Chang, JunYoung ; Kim, Jeong-Gyu ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 466~474
The analytical method of 14 kinds of coplanar - PCBs was established and applied the soil sample. The three kinds of extraction solvents (toluene, acetone: n-hexane, dichloromethane) were selected to apply the soil sample. The silica gel, florisil and alumina column cleanup also performed to compare the elution recovery. The average recovery of selected solvents in soil A, B and C was surveyed the 84.25%, 56.09% and 44.69% for toluene, 52.56%, 81.42% and 58.53% for acetone : n - hexane and 55.94%, 71.33% and 61.05% for dichloromethane. The average recovery is represented 49.99% for silica gel (n - hexane 100 mL), 69.65% for florisil (6% ether/n - hexane 100 mL), and 65.23% for alumina (2% DCM : n - hexane 100 mL, 50% DCM: n-hexane 150 mL). In silica gel (n - hexane) and florisil (6% ether : n - hexane) cleanup, the 14 kinds of coplanar PCBs eluted until 40 mL. In the silica gel and florisil columns cleanup, the amounts of elution solvent can be reduced from these results, but the researcher has to confirm the elution amounts before performing the experiments. In alumina cleanup process, the result was obtained to the 100 mL of elution solvents (2% DCM: n-hexane 100 mL and 50% DCM: n-hexane 40 mL), therefore the change of elution solvent is necessary to develop the simple procedure.
Quantitation of Phthalate and Adipate in Natural Mineral Water and PET Container
Shin, Ueon-Sang ; Ahn, Hye-Sil ; Shin, Ho-Sang ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 475~481
The determination of phthalates and adipate in natural mineral water and its container is described. Phthalates and adipate were extracted from natural mineral water by liquid-liquid extraction with methylene chloride, concentrated and then injected in GC-MS (SIM). Phthalates and adipate from 1) PET, cap, label and glue were extracted in Soxhlet with 50 mL of carbon tetrachloride, purified with silicagel and detected with GC-MS (SIM). Peak shapes and quantitation of phthalates and adipate were excellent, with linear calibration curves over a range of
in water sample (
> 0.996) and over a range of
in solid samples (
>0.994). The detection limits of analytes were
in water and
in solid samples. Five kinds of natural mineral water samples, two PETs, two labels, two caps and two glues were quantified by the described procedure. As a results, the concentrations of total phthalates in natural mineral water ranged from ND ~ 1.2 ng/mL. Otherwise, the concentrations of total phthalate extracted from PET ranged from 0.55 ~ 1.2 mg/Kg. We found that the accurate determination of phthalte and adipate in natural mineral water and container must be considered blank correction and the removal of label and glue in PET sample.
Study on Metabolism and Excretion of Carteolol in Human Urine using GC/MS
Min, Hye-Ki ; Kim, Myungsoo ; Cho, Hyun-Woo ; Kim, Taek-Jae ; Kim, Dong-Hyun ; Myung, Seung-Woon ;
Analytical Science and Technology, volume 15, issue 5, 2002, Pages 482~487
International Olympic Committee (IOC) prohibits the use of carteolol which is one of
-blockers. To prove whether carteolol product was taken or not, the analytical method in urine using GC/MS was established, and metabolism and excretion study were evaluated. As compared with acid hydrolysis, enzyme hydrolysis method was more efficiency. Coefficients of variation for intra-assay precision was around 10%. Error was less than 5% except the concentration of
. Recovery was 78.5% at
. Free carteolol, conjugated carteolol, and small amount of p-OH carteolol were found in dosed human urine samples. The conjugated form was being 59.4% of the total carteolol in human urine. The amount of carteolol renal excreted for 72 h after oral dose of 10 mg of carteolol was 49% of the administred dose.