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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 20, Issue 6 - Dec 2007
Volume 20, Issue 5 - Oct 2007
Volume 20, Issue 4 - Aug 2007
Volume 20, Issue 3 - Jun 2007
Volume 20, Issue 2 - Apr 2007
Volume 20, Issue 1 - Feb 2007
Selecting the target year
Analytical method of the polychlorinated biphenyls in soil using GC/ECD and GC/MS
Kim, Tae-Seung ; Shin, Sun-Kyoung ; Yoon, Jeong-Ki ; Kim, Jong-Ha ; Kim, Hyoung Seop ; Lee, Jeong Ah ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 91~108
This study was investigated both the Korean official soil test method and the international various methods for PCBs in soil sample. The analytical guideline of PCBs in contaminated soil were proposed based on the official soil test methods by discussing the extraction, column cleanup, instrumental conditions, quantification methods of peak matching and individual isomers. The total 28 soil samples were selected by consideration of PCBs-contamination, land use etc., and then analyzed using gas chromatography/electron capture detection (GC/ECD) and gas chromatography/mass spectrometry(GC/MS). In this study, the PCBs were not detected as peak matching method using GC/ECD, but PCBs detected
using GC/MS in background concentrations.
Evaluation of analytical method for polybrominated diphenyl ethers (PBDEs) in manufactured products waste
Shin, Sun Kyoung ; Kim, Hyoung Seop ; Jeon, Tae Wan ; Kim, Tae Seung ; Kim, Jong Ha ; Lee, Jeong Ah ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 109~114
In this study, soxhlet extraction and dissolution-precipitation method are used for separating analyte from polymer materials. In soxhlet extraction efficiency test, it has been found that the DCM, Toluene, THF, and mixtures Acetone/Hexane (1:4, v/v) gave good extraction efficiency, while the use of the ethyl ether, acetone/ethyl ether (1:4, v/v), acetone/hexane (1:1, v/v), DCM/hexane (1:1, v/v) resulted in significantly lower values. In case of dissolution-precipitation method, there is no considerable difference with used different dissolving solvent. The elution amount of multi layer silica and Florisil column were determined with hexane 250 mL and 70 mL of hexane, respectively. Range of PBDE in real waste plastics was N.D.~1,028 ppm.
An analytical method of heterocyclic amines by LC/MS
Myung, Seung-Woon ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 115~123
The heterocyclic amines (HAs) are a family of mutagenic/carcinogenic chemicals formed from the cooking of muscle meats such as beef, meat, fowl, and fish. A major draw back in the analysis of HAs from foods is their very low level of concentration (ng/g) and a number of matrix interferences in samples. Solid-phase extraction (SPE) is one of the procedures widely used for the extraction and purification of HAs in food samples. In this study, several SPE procedures of HAs determination were performed. Recoveries of the HAs were obtained from comparing a matrix such as a standard methanolic solution and pre-cooked meat extracts. Recovery values were ranging between 25.3 and 93.0 % at a concentration of 25.0 ng/g. HAs were determined with high sensitivity by micro-HPLC (
-HPLC) analysis with electrospray ionization mass spectrometry (ESI-MS). Another developed method, which is freezing filtration method, shows better extraction recoveries and good precisions. The established method will be applicable to monitoring of heterocyclic amines from the cooked meat.
Preparation and characterization of fullerene dimer [C
] by trichloroperbenzoic acid oxidation method
Oh, Won-Chun ; Jung, Ah-Reum ; Ko, Weon-Bae ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 124~130
In this study, we present the preparation and characterization of oxidized fullerene and fullerene dimer [
]. From the XRD data, other weak peaks with pristine fullerene [
] peaks were observed in the X-ray diffraction patterns for fullerene dimer [
]. SEM micrographs for the fullerene dimer [
] indicated that practically all the surface state was shown the drastic morphology changes and its outer surface is clearly visible and resulted in clogging and frost-like formation. From the MALDI-TOF mass spectra, the differences in the spectra recorded on two kinds of fullerene are due to the oxidation including chemical bonding and bridging between the
molecules. We also obtained additional information from FT-IR spectra on functional component on the chemically modified surface of oxidized fullerene and fullerene dimer [
Direct determination of gadolinium in urania-gadolinia nuclear fuels by inductively coupled plasma atomic emission spectrometry
Choi, Kwang-Soon ; Suh, Moo-Yul ; Lee, Chang-Heon ; Han, Sun-Ho ; Jee, Kwang-Yong ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 131~137
The urania-gadolinia fuels were dissolved with nitric acid. The analytical conditions of ICP-AES for the direct determinations of gadolinium in the uranium matrices without separation process were investigated. Based on the effect of uranium on gadolinium intensity, the best wavelength for gadolinium was 336.223 nm. The relative deviation of two methods, direct and indirect measurements with anion exchange chromatography, was less than 5 %. Therefore it was possible for this procedure directly to measure 5~10 wt.% of gadolinium in urania-gadolinia fuels without separation by ICP-AES.
Sensitive determination of paroxetine in canine plasma by liquid chromatography-tandem mass spectrometry (LC-MS/MS)
Chang, Kyu Young ; Kang, Seung Woo ; Han, Sang Beom ; Youm, Jeong-Rok ; Lee, Kyung Ryul ; Lee, Hee Joo ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 138~146
A simple and sensitive method for the determination of paroxetine in canine plasma was developed and validated by liquid-liquid extraction and liquid chromatography-tandem mass spectrometry (LC-/MS/MS). Fluoxetine was used as an internal standard. Paroxetine and internal standard in plasma samples were extracted using TBME (tert-butyl methyl ether). A centrifuged upper layer was then evaporated and reconstituted with mobile phase of 50% acetonitrile adjusted to pH 3 by formic acid. The reconstituted samples were injected into a Capcell Pak UG120 (
) column. Using MS/MS with SRM (selective reaction monitoring) mode, the transitions (precursor to product) monitored were m/z
for paroxetine, and m/z
for internal standard. Linear detection responses were obtained for paroxetine concentration range of 0.02~5 ng/mL. A correlation coefficient of linear regression (
) was 0.9993. Detection of paroxetine in canine plasma was accurate and precise, with limit of quantification at 0.02 ng/mL. The method has been successfully applied to pharmacokinetic study of paroxetine in healthy beagle dogs.
Study of sweat content analysis and latent fingerprint developing
Choi, Mi-Jung ; Sun, Yale-Shik ; Kim, Chang-Seong ; Choi, Man-Sik ; Sung, Nack-Do ; Park, Sung-Woo ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 147~154
Sweat contents were investigated for using those data to forensic purpose. The experiments of identifying sweat contents were as follow: 1) measurement of amino acids (aspartic acid, serine, glycine etc) by HPLC, 2) anions (
) by IC and 3) trace elements (Cu, Zn, Li, B, etc.) by ICP-MS. Amino acid contents in sweat are varied with individual samples and glycine, threonine, alanine, valine and histidine are detected as the prime one. The detected anions are
(2167~4073 ppm) and
(454~582 ppm) mostly. Trace elements of Rb, Zn and Cu are detected and those concentrations are relatively very high. The compositions of sweat can be influenced by various factors (diet, anthropometric, characteristics, physical fitness, age, gender and the state of the health).
The studies of developing latent fingerprint in general print papers by chemical reaction
Roh, Seung-Chan ; Choi, Mi-Jung ; Kim, Man-Ki ; Lee, Oho-Taick ; Park, Sung-Woo ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 155~163
Porosity paper evidence is encountered in case of forgery, kidnapping, fraud and terrorist activity. The present study was designed to evaluate the effect of three chemical reagents (Ninhydrin, 1,8-diazafluoren-9-one (DFO), Iodine fuming) to the quality of developed latent fingerprints on porosity printing papers and newspaper. In case of printing papers, print quality was better with Iodine fuming method than Ninhydrin and DFO treatment to developing latent fingerprints. Developing latent fingerprint on newspapers was achieved with Iodine fuming processing. The processing of Iodine fuming followed by DFO and by using blue light (orange red filter) exhibited better results with Iodine fuming. Enhancement of latent fingerprint detection image using Digital Imaging System was achieved.
Determination of acrylamide in food products
Chung, Hyung-Wook ; Park, Sung-Kug ; Choi, Dongmi ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 164~169
A selective analytical method of LC/MS/MS has been applied to determine the levels of acrylamide in food products. Food samples were 17 including 6 potato chips, and 11 french fries. The analysis of food samples includes extraction with DDDW, clean-up using C18 and mixed ion exchange SPE cartridges and detection by liquid chromatography tandem mass spectrometry. The mobile phase was a mixture of 0.1 % acetic acid and 0.5 % methanol in water. The target ions were identified and determined by ESI mass spectrometer. The overall recoveries were ranged from 91 % to 101 % and the limit of quantitation was
. Depending on food kinds, the levels of acrylamide were variable and the average was 0.71 mg/kg for potato chips, and 0.34 mg/kg for french fries.
Determination of benzo(a)pyrene in olive oils
Hu, Soojung ; Woo, Gun-Jo ; Choi, Dongmi ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 170~175
To determine levels of benzopyrene in olive oils, a selective analytical method of HPLC/FLD has been applied. After removing fat in food samples with hexane, it was extracted in aqueous N,N-DMF solution, cleaned-up on florisil SPE cartridge and analyzed by the instrumental analysis. The mobile phase was a mixture of acetonitrile and water in 8:2 by the isocratic elution and the excitation wavelength of fluorescence detector was 294 nm and emission wavelength of it was 404 nm. The average recovery was about 95 % and the limit of quantitation was
. The levels of benzopyrene in the selected olive oil samples were ranged from not detected to
, however, they were under
, the maximum level of benzopyrene in olive oil which was established in the food code.
A matrix-typed, sustained-releasing agent comprising agrochemical and the sustained-releasing product analysis for the preparation
Park, Hae-Jun ; Kim, Sung Ho ; Kim, Hwa Jung ;
Analytical Science and Technology, volume 20, issue 2, 2007, Pages 176~182
The present study relates to a matrix-typed, sustained-releasing agent comprising agrochemical effective ingredients being capable of recognizing a content of moisture, and a preparation method thereof. The curdlan solution added to acid was formed matrix which has unique network structure. The matrix treated by heat lost water solubility. The network structure of matrix was opened in the aquatic condition but closed again in dry condition. Therefore, in the sustained-releasing formulation system, an agrochemical effective ingredient was released from the formulation only in the aquatic condition. Use of the composition according to the product can control a manifesting time of effects of agrochemicals and can provide agrochemicals with reduced harmful damages.