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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 22, Issue 6 - Dec 2009
Volume 22, Issue 5 - Oct 2009
Volume 22, Issue 4 - Aug 2009
Volume 22, Issue 3 - Jun 2009
Volume 22, Issue 2 - Apr 2009
Volume 22, Issue 1 - Feb 2009
Selecting the target year
Development of the testing method for newly regulated hazardous compounds in electrical and electronic equipments
Choi, Ki-In ; Hwang, Tae-Woong ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 439~448
Analysis and exposure assessment of the total PCBs in foods
Oh, Keum Soon ; Suh, Junghyuck ; Paek, Ock Jin ; Kim, Dongsul ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 449~457
Total PCBs (62 congeners) has been determined in the retailed foods by the isotopic dilution method and the exposure assessment has been performed. Put into a food sample
-labeled standard for recovery was added and then it was extracted, cleaned-up by multi-layer column chromatography and then analyzed by HRGC/MS. The average levels (ng/g) detected was 0.1 for rice, 1.8~3.4 for meats, 0.3~3.7 for milk and dairy products, 10.0 for egg and 0.8~34.4 for fishes. Distribution of total PCBs was in order of fishes (94.4%) > meats (2.3%) > eggs (1.7%) > milk and dairy products (1.3%) > rice (0.3%). The estimated daily intake(EDI) was 14 ng/kg bw/day. It was concluded that there was no health risk at all.
Determination of residual flumethrin in honey products by HPLC
Won, So-Young ; Jeong, Young-Ji ; Lee, Hwee-Jae ; Chang, Hye-Sook ; Bahn, Kyeong-Nyeo ; Kang, Ho-Il ; Kim, So-Hee ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 458~463
A new quantitative analytical method has been established for the rapid determination of flumethrin in honey products using high performance liquid chromatography (HPLC). Sample was dissolved and extracted in the mixture of water and acetonitrile (1:2). The extracts were purified with silica cartridge eluted by the mixture of hexane and dichloromethane (55:45) and analyzed at 266 nm using HPLC. The percentage recovery of flumethrin spiked in sample was found to be 90.2-97.8% and the limit of detection is 0.003 mg/kg. We validated the method for the linearity, the precision and the reproducibility. We investigated the residues of flumethrin in honey products retailed in market using the established method. Flumethrin was not detected at all among 130 samples of honey.
Oxidation behavior on the surface of titanium metal specimens at high temperatures (300~1000℃)
Park, Yang-Soon ; Han, Sun-Ho ; Song, Kyuseok ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 464~470
For the investigation of the oxidation behavior for titanium metal at various temperatures, titanium specimens were heated for 2 hours in the range of
, individually. And then X-ray diffraction(XRD), scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDS) and attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopic analyses were carried out. At
, infrared absorption bands on the surface of the titanium specimen were shown in a spectrum by the oxygen uptake of titanium metal(hexagonal). At increased temperature, not only infrared absorption bands but also X-ray diffraction peaks for the titanium oxide were grown and shifted to low wave number (
) and angle(
) due to the more oxygen diffusion into titanium metal. At
(hexagonal phase) was identified by X-ray diffractometer.
(rutile, tetragonal phase) layer was produced on the surface of the specimen below
in thickness at
, and grown about
in thickness at
, (110) plane of the crystal on the surface of rutile-
layer was grown.
Analytical method of PCBs-containing solid wastes
Park, Jin Soo ; Kang, Young Yeul ; Song, Ki Bong ; Jeon, Tea Wan ; Chun, Jin Won ; Shin, Sun Kyoung ; Jung, Kwang Yong ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 471~479
This study was performed to improve the analytical methods and re-establish the regulatory standard of PCBs-containing solid wastes for sufficient management in which has been concerned internationally. To do this, the sampling, pre-treatment and quantification methods which were used in USA and Japan were discussed. It was thought properly that new standard of PCBs-containing solid wastes was established through correlation with PCBs concentration of transformer oil. The surface wipe sampling was selected in the nonporous materials and cutting sampling in the porous materials. In the absence of transformer oils, electrical equipment is PCB-contaminated if it has PCBs at
as measured by a wipe test of a nonporous surface and if it has at 0.04 mg/L as measured by cutting test of a porous material. Also, new analytical methods for PCBs containing solid waste were proposed.
The measurement of dicamba in soil and plants
Shin, Ho-Sang ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 480~487
The herbicide dicamba (2-methoxy-3,6-dichlorobenzoic acid) in soil and plants was determined by gas chromatography-mass spectrometry (GC/MS). The samples were extracted with diethyl ether at pH 2, and washed with 0.1 N HCl, and then dried. The dried residue was derivatized in 1 mL of 10%
-MeOH for 2 hr at
. The reaction mixture was neutralized with 4 mL of sodium bicarbonate solution and reextracted with 5 mL of diethyl ether. After the extract was concentrated, dicamba was determined by GC/MS-SIM mode. There was good linearity above 0.999 in the ranges of the
. Total 42 sample including 32 soil samples and 10 plants samples were analyzed by developed method. Dicamba was detected in the concentration range of
in 15 samples among 32 soil samples and in the concentration range of
in 5 samples among 10 plants samples. A cause of the wither and die of the pine trees is suspected to spray dicamba around or directly to them.
A study on the calibration characteristics of organic fatty acids designated as new offensive odorants by cryogenic trapping-thermal desorption technique
Ahn, Ji-Won ; Kim, Ki-Hyun ; Im, Moon-Soon ; Ju, Do-Weon ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 488~497
In this study, analytical methodology for several organic fatty acids (OFA: propionic acid (PA), butyric acid (BA), isovaleric acid (IA), and valeric acid (VA)) designated as new offensive odorants in Korea (as of year 2010) was investigated along with some odorous VOCs (styrene, toluene, xylene, methyl ethyl ketone, methyl isobutyl ketone, butyl acetate, and isobutyl alcohol). For this purpose, working standards (WS) containing all of these 13 compounds were loaded into adsorption tube filled with Tenax TA, and analyzed by gas chromatography (GC) system thermal desorber interfaced with. The analytical sensitivities of organic fatty acids expressed in terms of detection limit (both in absolute mass (ng) and concentration (ppb)) were lower by 1.5-2 times than other compounds (PA: 0.24 ng (0.16 ppb), BA: 0.19 ng (0.11 ppb), IA: 0.15 ng (0.07 ppb), and VA: 0.28 ng (0.13 ppb)). The precision of BA, IA, and VA, if assessed in terms of relative standard error (RSE), maintained above 5%, while the precison of other compounds were below 5%. The reproducibility of analysis improved with the aid of internal standard calibration (PA:
), respectively. The results of this study showed that organic fatty acid can be analyzed using adsorption tube and thermal desorber in a more reliable way to replace alkali absorption method introduced in the odor prevention law of the Korea Ministry of Environment (KMOE).
Chip-based isothermal amplification method for EGFR gene mutations in lung cancer
Ahn, Young-Chang ; Park, Su-Min ; Seo, Jae-Won ; Yoon, Il-Kyu ; Jung, Duck-Hyun ; Lee, Eun-Young ; Nam, Youn-Hyoung ; Jang, Won-Cheoul ; Seung, Kwon Pil ; Kim, Jong-Wan ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 498~503
Lung cancer is the main cancer on the world today, due to the high case fatality. Lung cancer can devide into two major types, such as small-cell lung cancer (SCLC) and non-small-cell lung cancer (NSCLC). Mutations in the epidermal growth factor receptor (EGFR) have been described in patients with advanced NSCLC. Mutations in the EGFR are associated with clinical and radiographic responses to EGFR tyrosine kinase inhibitors gefitinib and erlotinib. Thus, the detection of EGFR mutation can offer an effective information in clinical decision-making. In this study, We developed very simple, cheep and rapid mutation detection system by chip-based isothermal amplification method. The method described here has shown the advantages of rapid amplification, high sensitivity, and specificity. Also, it will be useful for rapid and reliable clinical diagnosis of EGFR mutation.
Distribution of hazardous heavy metals in commercial herbal medicines classified by plant parts used in seoul
Kim, Donggyu ; Kim, Bogsoon ; Han, Eunjung ; Han, Changho ; Kim, Oukhee ; Choi, Byunghyun ; Hwang, Insook ; Chae, Youngzoo ; Kim, Minyoung ; Park, Seungkook ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 504~513
In this study, the safety of commercial herbal medicines was evaluated by determining concentration of hazardous heavy metals. 3,152 samples (244 types) purchased by individual packing unit from market in Seoul, were analyzed using ICP-MS and mercury analyzer. As a result, the content (mg
) of Pb was higher in the above-ground part (0.92) than underground part (0.43). But in case of As and Cd contents, there is slightly higher in the underground-parts (0.26, 0.13) than the above-ground parts (0.18, 0.08). There were many herbal medicines exceeding regulatory limits of Cd comparing with other metals. The levels of Hg seemed to be different between above-ground part(0.009) and underground part (0.008) but there was no sample exceeding tolerance limits. In the comparison of imported samples with domestic herbal medicines, it was shown that Pb, As, and Hg were measured highly in the imported ones, Cd was not significantly different (t-test, p<0.05). The significant correlation was observed between Pb and As (r=0.386, p<0.01) but there was no difference in other parts. The heavy metal contamination of herbal medicines measured in total amount of respective heavy metals (mg
) was high in Flos (6.241) and Caulis (2.238), and decreased in the order of Cortex (1.634), Herba (1.154), Perithecium (0.861), Rhizoma (0.828), Radix (0.825), Fructus (0.475), and was low in Semen (0.422) (ANOVA-test, p<0.05).
Analysis of coenzyme Q
in human plasma by high performance liquid chromatography
Park, Yong-Sun ; Park, Sang-Boem ; Song, Sean-Mi ; Kim, Yong-Woo ; Lee, Kyoung-Ryul ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 514~518
), a vitamin E-like substance, represents a components of the complex antioxidant system of the human organism.
levels in human plasma were determined by high performance liquid chromatography (HPLC) with UV detection. It was dissociated from lipoproteins by methanol and extracted into n-hexane with liquid-liquid extraction procedure, after centrifugation, the supernatant was dried under nitrogen gas stream. The residue was dissolved in the absolute ethanol. Determination of
was performed on a
reversed-phase analytical column with ultraviolet detection at 275 nm and the mobile phase containing 15% (v/v) ethanol in methanol at a flow rate of 1.7 mL/min. The low limit of quantitation was 0.02 mg/L (S/N=10), the linearity between the concentration and peak height is from 0.1 to 2.0 mg/L. Twenty-four randomly selected plasma samples from apparently healthy, 27 to 44 year old individuals (males and females) were analyzed for total
. The average level in these subjects was
with the range of 0.41-0.98 mg/L. This method has a specific and a sufficient limit of quantitation (LOQ) for analysis of
in human plasma in both a clinical study and research at laboratories.
Removal of I
from Aqueous Solution
Lim, Heon-Sung ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 22, issue 6, 2009, Pages 519~523
is especially one of the most harmful radioactive elements because of its long half-life (
yr). The efficient removal of iodide (
) and iodate (
) in a aqueous solution by adsorption using activated alumina and activated carbon was studied. The removal efficiency was over 99% for iodide ion with silver treated basic alumina and iodate ion with acidic alumina or silver treated acidic alumina without any chemical addition or physical treatments.