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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 27, Issue 6 - Dec 2014
Volume 27, Issue 5 - Oct 2014
Volume 27, Issue 4 - Sep 2014
Volume 27, Issue 3 - Jun 2014
Volume 27, Issue 2 - Apr 2014
Volume 27, Issue 1 - Feb 2014
Selecting the target year
Composition comparison of PM
fine particulate matter for Asian dust and haze events of 2010-2011 at Gosan site in Jeju Island
Kim, Ki-Ju ; Lee, Seung-Hoon ; Hyeon, Dong-Rim ; Ko, Hee-Jung ; Kim, Won-Hyung ; Kang, Chang-Hee ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 1~10
DOI : 10.5806/AST.2014.27.1.1
samples were collected at Gosan Site of Jeju Island, and analyzed, in order to investigate the size distribution and pollution characteristics of their components.
were mostly existed in fine particles. Meanwhile,
was distributed in both fine and coarse particles, and
were rich in coarse particle mode. The concentrations of nss-
were increased 36.7 and 3.2 times in coarse particles, and 15.0 and 3.1 times in fine particles during the Asian Dust periods. Especially, the concentrations of crustal elemental species such as Al, Fe, Ca, K, Mg, Ti, Mn, Sr, Ba were highly increased for those periods. In the haze events, the concentrations of secondary air pollutants were increased 1.3~2.6 and 1.5~4.2 times in coarse and fine particles, respectively. Moreover, the remarkable increase of
concentration was also observed in fine particle mode. The factor analysis showed that the composition of coarse particles was influenced mainly by marine sources, followed by soil and anthropogenic sources. On the other hand, the fine particles were influenced by anthropogenic sources, followed by marine and soil sources.
Measurement of metals in sediment of the Geum-River and their correlation
Lee, Jun-Bae ; Hong, Seoun-Hwa ; Kim, Dong-Ho ; Huh, In-Ae ; Huh, Yu-Jeong ; Khan, Jong-Beom ; Oh, Da-Yeon ; Kim, Keon-Young ; Lee, Young-Joon ; Lee, Soo-Hyung ; Shin, Ho-Sang ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 11~21
DOI : 10.5806/AST.2014.27.1.11
An investigation of grain size, organic compounds and metal distribution in 23 sediment samples of the Geum-River basin (Korea) was conducted in two seasons of 2012 (dry season and rainy season). The samples of sediment were collected from the basin and investigated for concentrations of some metal and general indexes containing grain size. Concentrations of Pb, Zn, Cu, Cr, Ni, As, Cd, Hg, Al and Li have been determined by inductively coupled plasma spectrometer (ICP) and the sediments organic matter content was determined by the loss on ignition, and sediments were fractionated with three different nylon sieves. Correlation analysis was made for grain size, organic material and metal concentrations, and the Pearson correlation coefficients between their concentrations were determined. As a result, the higher metal concentrations were found in the period of the dry season than in another season. The metal concentrations showed high correlation with that of organic material (COD and TOC). Thereby, the high distribution of metal concentrations in sediment containing high organic compound is suggesting an interaction with organic matter.
Measurement of 1,4-dioxane in surface water by headspace GC-MS
Hong, Seon-Haw ; Lee, Jun-Bae ; Lee, Soo-Hyung ; Lim, Hyun-Hee ; Shin, Ho-Sang ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 22~26
DOI : 10.5806/AST.2014.27.1.22
1,4-Dioxane was classified as a Group 2B carcinogen by the International Agency for Research on Cancer. The compound was measured in surface water with a headspace gas chromatographic mass spectrometric detection. A 5 mL water sample was placed in a 10 mL headspace vial and saturated with NaCl, and the solution was spiked with 1,4-dioxane-d8 as an internal standard and sealed with a cap. Water samples were collected from twenty-two basins of Gum-River on June and September 2012, respectively. As a result, 1,4-dioxane was detected in the concentration range of
) in the frequency of about 30% in surface water samples.
Preparation of cross-linked silk fibroin film by γ-irradiation and their application as supports for human cell culture
Park, Hyean-Yeol ; Kim, Yoon-Seob ; Choi, Seong-Ho ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 27~33
DOI : 10.5806/AST.2014.27.1.27
This study described about preparation of the cross-linked silk fibroin (SF) film by
-irradiation of the casted SF film, which is fabricated from aqueous solution regenerated via fibers of cocoons and their application as supports for human cell culture. The properties of cross-linked SF film were evaluated by FT-IR spectroscopy, contact angle, solubility to water, thermal analysis, surface area analyzer, and morphology via scanning electron microscopy (SEM). The cross-linked SF films were not dissolved in water and exhibited the rough surface morphology, large surface area, and good thermal properties. The human fibroblast cell (CCD-986sk) and embryo kidney-ft cell were well growed on the surface of cross-linked SF film supports prepared by
-irradiation. The cross-linked SF film prepared by
-irradiation can be used as biomaterials for human cell culture.
Large scale splitter-less FFD-SPLITT fractionation: effect of flow rate and channel thickness on fractionation efficiency
Yoo, Yeongsuk ; Choi, Jaeyeong ; Kim, Woon Jung ; Eum, Chul Hun ; Jung, Euo Chang ; Lee, Seungho ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 34~40
DOI : 10.5806/AST.2014.27.1.34
SPLITT fractionation (SF) allows continuous (and thus a preparative scale) separation of micronsized particles into two size fractions ('fraction-a' and 'fraction-b'). SF is usually carried out in a thin rectangular channel with two inlets and two outlets, which is equipped with flow stream splitters at the inlet and the outlet of the channel, respectively. A new large scale splitter-less gravitational SF (GSF) system had been assembled, which was designed to eliminate the flow stream splitters and thus is operated by the full feed depletion (FFD) mode (FFD-GSF). In the FFD mode, there is only one inlet through which the sample is fed. There is no carrier liquid fed into the channel, and thus prevents the sample dilution. The effects of the sample-feeding flow rate, the channel thickness on the fractionation efficiency (FE, number % of particles that have the size predicted by theory) of FFD-GSF was investigated using industrial polyurethane (PU) latex beads. The carrier liquid was water containing 0.1% FL-70 (particle dispersing agent) and 0.02% sodium azide (used as bactericide). The sample loading rate was varied from about 4 to 7 L/hr with the sample concentration fixed at 0.01%. The GSF channel thickness was varied from 900 to
. Particles exiting the GSF channel were collected and monitored by optical microscopy (OM). Sample recovery was monitored by collecting the fractionated particles on a
membrane filter. It was found that FE of fraction-a was increased as the channel thickness increases, and FE of fraction-b was increased as the flow rate was increased. In all cases, the sample recovery has higher than 95%. It seems the new splitter-less FFD GSF system could become a useful tool for large scale separations of various types of micron-sized particles.
Identification and classification of fresh lubricants and used engine oils by GC/MS and bayesian model
Kim, Nam Yee ; Nam, Geum Mun ; Kim, Yuna ; Lee, Dong-Kye ; Park, Seh Youn ; Lee, Kyoungjae ; Lee, Jaeyong ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 41~59
DOI : 10.5806/AST.2014.27.1.41
The aims of this work were the identification and the classification of fresh lubricants and used engine oils of vehicles for the application in forensic science field-80 kinds of fresh lubricants were purchased and 86 kinds of used engine oils were sampled from 24 kinds of diesel and gasoline vehicles with different driving conditions. The sample of lubricants and used engine oils were analyzed by GC/MS. The Bayesian model technique was developed for classification or identification. Both the wavelet fitting and the principal component analysis (PCA) techniques as a data dimension reduction were applied. In fresh lubricants classification, the rates of matching by Bayesian model technique with wavelet fitting and PCA were 97.5% and 96.7%, respectively. The Bayesian model technique with wavelet fitting was better to classify lubricants than it with PCA based on dimension reduction. And we selected the Bayesian model technique with wavelet fitting for classification of lubricants. The other experiment was the analysis of used engine oils which were collected from vehicles with the several mileage up to 5,000 km after replacing engine oil. The eighty six kinds of used engine oil sample with the mileage were collected. In vehicle classification (total 24 classes), the rate of matching by Bayesian model with wavelet fitting was 86.4%. However, in the vehicle's fuel type classification (whether it is gasoline vehicle or diesel vehicle, only total 2 classes), the rate of matching was 99.6%. In the used engine oil brands classification (total 6 classes), the rate of matching was 97.3%.
Analysis of E,E-farnesol and squalene in makgeolli using stir bar sorptive extraction coupled with gas chromatography-mass spectrometry
Ha, Jaeho ; Shim, You-Shin ; Cho, Yongsun ; Seo, Dongwon ; Jang, Hyewon ; Jang, Hyejin ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 60~65
DOI : 10.5806/AST.2014.27.1.60
The aim of this study was to establish an analytical method for the determination of E,E-farnesol and squalene in makgeolli, which is a traditional type of Korean fermented rice wine. E,E-farnesol and squalene in makgeolli were extracted using stir bar sorptive extraction (SBSE) coupled with gas chromatography-mass spectrometry. SBSE was found to be an effective method for analyzing the E,E-farnesol and squalene levels in makgeolli. The linear dynamic range of the SBSE method for detecting E,E-farnesol and squalene ranged from 0.5 to 200 ng/mL with
for E,E-farnesol and 100 to 50000 ng/mL with
for squalene. The limit of detection and the limit of quantification using the SBSE method were 0.1 and 0.5 ng/mL for E,E-farnesol and 15.0 and 40.0 ng/mL for squalene, respectively. The average recoveries obtained were, quantitatively, 101-107% for E,E-farnesol and 98-103% for squalene, respectively, supporting the accuracy of the SBSE-GCMS method.
Discrimination of vegetable oils by stable carbon isotope ratio and fatty acid composition
Kim, Jae-Young ; Lee, Sang-Mok ; Chang, Moon-Ik ; Cho, Yoon-Jae ; Chae, Young-Sik ;
Analytical Science and Technology, volume 27, issue 1, 2014, Pages 66~77
DOI : 10.5806/AST.2014.27.1.66
This study was carried out to examine the authenticity discrimination of circulated vegetable oils by using carbon isotope ratio (
) and fatty acid composition. This analysis was applied to vegetable oils which we can buy in Korean markets, and the analytical instrument was measured by using EA-IR/MS for
and GC/FID for fatty acid composition.
was separated into 3 groups as
plant including sesame oil,
plant including maize oil, and rice bran oil. Fatty acid composition was significantly different among vegetable oils. In addition, the interval of low and high price vegetable oils was classified through the scatter plot analysis showing the correlation of the
and fatty acid composition. Therefore, through a simultaneous determination of the
and fatty acid composition, we are able to determine the majority of vegetable oils. It help to ensure food safety in Korean market by exclusion of economically modified adulteration in food.