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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 16, Issue 6 - 00 2003
Volume 16, Issue 5 - 00 2003
Volume 16, Issue 4 - 00 2003
Volume 16, Issue 3 - 00 2003
Volume 16, Issue 2 - 00 2003
Volume 16, Issue 1 - 00 2003
Selecting the target year
Study on uranium metalization yield of spent pressurized water reactor fuels and oxidation behavior of fission products in uranium metals
Choi, Ke Chon ; Lee, Chang Heon ; Kim, Won Ho ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 431~437
Metalization yield of uranium oxide to uranium metal from lithium reduction process of spent pressurized water reactor (PWR) fuels was measured using thermogravimetric analyzer. A reduced metal produced in the process was divided into a solid and a powder part, and each metalization yield was measured. Metalization yield of the solid part was 90.7~95.9 wt%, and the powder being 77.8~71.5 wt% individually. Oxidation behaviour of the quartemary alloy was investigated to take data on the thermal oxidation stability necessary for the study on dry storage of the reduced metal. At
, weight increments of alloy of Mo, Ru, Rh and Pd was 0.40~0.55 wt%. Phase change on the surface of the alloy was started at
. In particular, Mo was rapidly oxidized and then the alloy lost 0.76~25.22 wt% in weight.
Determination of fungicides in wines by solid-phase extraction and gas chromatography with mass selective detection
Park, Gyo-Beom ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 438~442
The fungicides, used for grape growth and remained in the wine products from domestic and foreign countries such as vinclozolin, dichlofluanid, penconazole, procymidone were quantitatively analyzed after solid-phase extraction using a GC/MS-SIM method. The results obtained were as follows: for all the samples, the content of procymidone was in the range from 2.2 to
, recoveries 81.3-93.1 %, and standard deviation 1.4-3.4 %.
Determination of Li generated from
Li reaction in Boric acid solution
Choi, Ke-Chon ; Jung, Yongju ; Yoon, Jei-Won ; Kim, Won-Ho ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 443~449
Thermal neutron irradiation experiment of boric acid solution was carried out using HANARO in following three conditions: (A)
, irradiation time = 1 hr; (B)
, irradiation time = 1 hr; (C)
, irradiation time = 0.5 hr. The amount of lithium produced from
reaction which was generated on neutron irradiation, was measured by flameless atomic absorption spectroscopy. The concentration of
measured in the three experiments was
(78.3% of theoretical value,
) in (A),
(70.5% of theoretical value,
) in (B) and
(71.6% of theoretical value,
) in (C). The pH value of irradiated boric acid was shifted to considerably low. It is estimated that boric acid would be transformed into the polyborate fonn, by radiolysis products of water, which has high dissociation constant.
Determination of Uranium Isotopes in Spent Nuclear Fuels by Isotope Dilution Mass Spectrometry
Kim, Jung Suk ; Jeon, Young Shin ; Son, Se Chul ; Park, Soon Dal ; Kim, Jong Goo ; Kim, Won Ho ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 450~457
The determination of uranium and its isotopes in spent nuclear fuels by isotope dilution mass spectrometry (IDMS) has been studied. The spent fuel samples were dissolved in 8 M
or its mixture with 14 M
HF. The dissolved solutions were filterred on membrane filter with
pore size. The uraniums in the spiked and unspiked sample solutions were quantitatively adsorbed by anion exchange resin, AG 1X8 and eluted with 0.1 M HCl. The contents of uranium and its isotopes (
) in the spent fuel samples were determined by isotope dilution mass spectrometric method using
as spike. The spike reference solution was standarized by reverse isotope dilution mass spectrometry (R-IDMS) using natural and depleted uranium. The results from IDMS were in average relative difference of 0.34% when compared with those by the potentiometric titration method.
Determination of Volatile Fatty Acids in Aqueous Samples by HS-SPME with In-Fiber Derivatization
Ahn, Yun Gyong ; Lee, Jee Yeon ; Kim, Jeehyeong ; Hong, Jongki ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 458~465
The HS (headspace)-SPME (Solid phase microextraction) as rapid and simple method was performed for the determination of volatile fatty acids (VFAs) from the aqueous samples. In-fiber derivatization of VFAs with 1-Pyrenyldiazomethane (PDAM) was applied to improve their sensitivity of detection. In SPME procedure, typical parameters such as effects of solution pH, and salting out reagent and ultrasonication were investigated to improve the extraction efficiency. Based on the developed method, VFAs in wastewater samples were determined by gas chromatography / mass spectrometry-selected ion monitoring (GC/MS-SIM) mode.
The photochemical reactions of iron species in rain and snow in Higashi-Hiroshima, Japan
Kim, Do Hoon ; Takeda, Kazuhiko ; Sakugawa, Hiroshi ; Lee, Jin Sik ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 466~474
This paper describes the concentrations of total dissolved iron (tFe) and
in rainwater and snow, the relationship of Fe species with other metals and ions in bulk rainwater, and the
generation mechanism in aqueous samples in rainwater of time series collection. Volume weight mean concentrations of tFe and
were 3.22 and
in bulk rainwater, and 50.1 and
in snow, respectively.
was significant fraction to the tFe, accounted for 3.25-93.4% of the tFe in rainwater and 87% in snow. We also investigated temporal variations of tFe,
, other metals and ions in rainwater of time series collection during rain event. Although the concentration range of tFe was different from those of other species, a decreasing trend of tFe from the beginning of the rain event was similar with other species. However, though
did not show such a decreasing trend,
/tFe was in good correlation with solar radiation. From the results of multiple linear regression analysis and thermodynamic calculations (Mineql+),
in our samples may be generated from photochemical reduction of
species (such as
and Fe-oxalate) at daytime.
Uncertainty evaluation of dioxin analysis in blood samples
Mun, Su-Jung ; Kim, Byung-Hoon ; Woo, Jin-Chun ; Chang, Yoon-Seok ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 475~482
Uncertainty of final measurement results considering main uncertainty sources being in dioxin analysis of a blood sample was estimated. 'The Guide to the Expression of Uncertainty in Measurement' was suggested for accomplishment of this study. After uncertainties for the 11 compounds detected in this experiment of the 17 target compounds of dioxin and furan were calculated considering the uncertainty sources of each step, uncertainty for the total dioxin concentration was estimated by combining these values. The concentration of dioxin in blood sample was expressed as
I-TEQ/g weight or
I-TEQ/g lipid, including the uncertainty values obtained in this way. The former expression indicates the conversion concentration into the sample weight and the latter one indicates the conversion concentration into the lipid weight. The quality of measured analytical results could be assured quantitatively by estimating uncertainty of measurement results and showing the range of measurand.
Determination of Amitrole in Water Samples by Evaporation and GC/MS
Yoon, So Hee ; Hong, Ji Eun ; Pyo, Hee Soo ; Park, Song Ja ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 483~487
Amitrole is well-known as a non-selective herbicide and it is able to cause contamination of driking water as well as pollution of ground water and surface water. However, it is difficult to extract from water because it has a high solubility for water whereas a low solubility for general organic solvents. This method is described for the determination of amitrole in water samples by GC/MS. After evaporation of 10 mL water sample by a vacuum evaporator, amitrole was derivatized with isobutyl chloroformate (iso-BCF) on room temperature for 15~20 min. As a result, the sensitivity for GCfMS was improved as N-isobutoxycarbonyl amitrole derivative was formed. The linearity of the calibration curve showed good as 0.997. The recoveries were obtained more than 94.9% and relative standard deviations were less than 2.8% at
. The limit of detection showed
with a signal-to-noise ratio (S/N) of 3.
Analysis of Sildenafil and its Analogues by LC/MS/MS
Myung, Seung-Woon ; Park, So-Hee ; Cho, Hyun-Woo ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 488~498
By LC/MS/MS, the analytical method of sildenafil and its analogues (homosildenafil, vardenafil and tadalafil) used as used medical treatment of impotence was established. electrosprary ionization (ESI) and atmospheric pressure chemical ionization (APCI) as a ionization method were applied. Several parameter were varied and the sensitivity and reproducibility were compared. In LC/ESI-MS method, capillary voltage, cone voltage, extractor, entrance and RF lens to create appropriate productr ions for multiple reaction monitoring (MRM) were variable parameter, but the formation of the other product ions except the precursor ion could not detect. And the value of entrance, collision energy, exit, corona voltage, cone voltage, extractor, RF lens, cone gas, and desolvation gas in APCI mode were varied, only the creation pattern of fragment ions by the change of RF lens value were detected, and the limit of detection was decreased due to the increase of S/N. Ten millimole ammonium formate (pH 4.8):acetonitrile=70:30 by isocratic elution in HPLC system was shown the maximum sensitivity in MS, the detection limit of sildenafil, homosildenafil, vardenafil and tadalafil obtained by ESI-MRM were 0.10, 0.025, 0.025, and
at S/N>5, respectively.
Determination of Biotin by HPLC
Kim, Dong-Soo ; Lee, Young-Ja ; Jeong, Dong-Youn ; Lee, Dong-Yup ; Ahn, Moon-Kyu ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 499~503
A high performance liquid chromatography gradient elution method with fluorescence detection for the determination of biotin in pure form and pharmaceutical preparations has been developed. BrMDMC gives intense fluorescence and the fluorescence was monitored with excitation at 360 nm and emission at 410 nm. The calibration curve for biotin shows good linearity over the range of 5 ~ 400 ng with correlation coefficient of 0.999. The detection limit of biotin was 2 ng and the result of recovery was 98.75% with relative standard deviation of 1.1%.
Electrochemical Determination of the Optimum pH of HRP
Yoon, Kil-Joong ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 504~508
A carbon paste electrode was constructed with peroxidase extracted from Horseradish and the variation of the response of the sensor with pH was investigated. Current profiles showed two highest sensitivities at two pH values respectively. In addition, two bands were observed in the electrophoretic expansion. A coincidence of the two experimental results added support to the possibility that the biosensor has two different isozymes. Assuming that current profiles are the sum of two gaussians, we deconvoluted them and determined the optimum pH of peroxidase isozymes.
Study on the Pretreatment of Seafood for the Determination of Total Arsenic using Wet Ashing Method
Kim, Sun Tae ; Park, Kyung Su ;
Analytical Science and Technology, volume 16, issue 6, 2003, Pages 509~512
Pretreatment method for the determination of total arsenic in seafood sample was studied. NIST SRM 1566a oyster tissue (
) as a standard arsenic compound in order to establish the decomposition method. We confirmed that the best way for pretreatment of seafoods to analyze total arsenic content precisely was
method by comparison of two methods which are dry ashing and wet ashing methods.