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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
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Volume & Issues
Volume 14, Issue 6 - 00 2001
Volume 14, Issue 5 - 00 2001
Volume 14, Issue 4 - 00 2001
Volume 14, Issue 3 - 00 2001
Volume 14, Issue 2 - 00 2001
Volume 14, Issue 1 - 00 2001
Selecting the target year
Environmental Analysis and Human Health Risk Assessment ( III ) - Risk Assessment for Carcinogen -
Pyo, Hui-Su ; Park, Song-Ja ; Ryu, Jae-Cheon ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 25~25
Simultaneous Determinaton of Octylphenol, Nonylphenol, Bis(2-ethylhexyl) phthalate in Biological Samples
Kim, Jong-Hun ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 95~102
A comprehensive analytical method of endocrine disruptors[i.e., nonylphenol(NP), octylphenol(OP), bis(2-ethylhexyl) phthalate(BEHP)] in meat or pork samples was developed. The method employed closed culture tube extraction with dichloromethane and solvent exchange to iso-hexane and SPE(2g) aminopropyl column, followed by determination on gas chromatography linked to mass spectrometry(GC/MS) operated in the single ion monitering(SIM) mode. For the multipoint recovery of nonylphenol, octylphenol and bis(2-ethlhexyl) phthalate OP, NP were showen good recoveries in
range of concentration, and BEHP more good recoveries in
wide range of concentration. The present method was applied to beef or pork samples of mart and butcher in Cheonju city and near Cheonju. The range of concentrations was respectively,
in nonylphenol(NP) and
in bis(2-ethylhexyl) phthalate(BEHP), but octylphenol(OP) was not dected in any samples. This method provides a powerful analytical tool to investigate a wide range of endocrine disruptors in biological samples of limited quantity.
A study on the Determination and Solvent Extraction Efficiencies of Rare Earth Elements by TBP and Nitrate Salt
Lee, Jung Min ; Lee, Yong Ju ; Kim, Sook Young ; Kim, Young Man ; Choi, Beom Suk ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 103~108
Rare earth elements(REE) were separated by solvent extraction with tri-n-butyl phosphate(TBP) and
, followed by back extraction with water. The method was applied to the determination of REE to circumvent the spectral interferences of ICP-AES analysis. The effects of the
concentration and the addition of hydrophobic solvents on the extraction efficiencies were investigated. Increases of the
concentration enhanced the extraction efficiencies of REE, and more than 95% recoveries were obtained at 5M of
concentration. On the other hand, addition of hydrophobic solvents lowered the extraction efficiencies. The method was applied to determine the REE in the monazite sample. But the precisions of the analytical results were more than 20%.
Analysis of Flavor-related Compounds from Tobacco using SPME-GC-MS
Park, Gyo-Beom ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 109~114
The flavor-related compounds contained in tobacco were analyzed by selected ion monitoring (SIM) method using headspace SPME gas chromatography-mass spectrometry(GC-MS). Flavor-related compounds were estragole pulegone, trans-anethole, safrole, piperonal, eugenol, methyleugenol, coumarin, trans-isoeugenol, trans-methyleugenol and myristicin. More than on of the flavor-related compounds were detected in the range
from all brands of tobacco studied. The recovery was ranged from 89.1 to 102.9% and relative standard deviation was ranged from 2.6 to 25.2%.
Analysis of Butyltin Compounds(mono-, di-, and tributyltin) in Human Blood
Kim, Nam Sook ; Park, Dong Uk ; Oh, Jae Ryoung ; Shim, Woon Joon ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 115~122
Butyltin compounds, including mono-(MBT), di-(DBT) and tributyltin(TBT) were analyzed in 44 human blood samples randomly collected from a hospital in "K" a city. Gas chromatograph equipped with flame photometric detector(FPD) was used to quantify the amounts of butylin compounds. Method detection limits(MDL) of this analytical method were 3.69ng Sn/g for MBT, 0.91ng Sn/g for DBT and 1.09ng Sn/g wet wt for TBT respectively. Standard reference material(SRM) containing of
TBT as chloride was analyzed to check if this analytical results would be reliable. Recovery of about 90% was obtained through this analysis, indicating that the analytical method from butyltin compounds blood was reliable. The concentrations of butyltin compounds ranged MDL(<3.69) to 7.93ng Sn/g for MBT and 1.15 to 5.41ng Sn/g wet wt for DBT. Tributyltin was below detection limit in all samples. Detection limits of our results are lower than those reported by Kannan et al. who reported butyltin compounds in 33 human blood samples in the United States. Detection of MBT and DBT on blood sample implies that butyltin compounds could be absorbed through consumption of seafoods or exposure to food stuffs made of plastics and household items. Further study is needed to examine if butyltin compounds in blood can be reliably analyzed and used as intake index.
Determination of Cadmium(II) Ion Using the Nafion-Ethylenediamine-Modified Glassy Carbon Electrode
Kim, Jin Ah ; Ko, Young Chun ; Park, Chan Ju ; Park, Byung Ho ; Chung, Keun Ho ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 123~130
Determination of cadmium(II) ion with a perfluorinated sulfonated polymer-ethylenediamine(nafion-en) modified glassy carbon electrode was studied. It was based on the chemical reactivity of an immobilized layer(nafion-en) to yield complex
. The reduction peak potential by differential pulse voltammetry(DPV) was observed at
vs. As/AgCl. The linear calibration curve was obtained in cadmium(II) ion concentration range
, and the detection limit(3s) was
. The detection limit of nafion-en modified glassy carbon electrode has been shown about 14 higher sensitivity than a bare glassy carbon electrode.
Neutron Activation Analysis of Human Hair for Human Health Assessment
Chung, Young-Sam ; Kang, Sang-Hoon ; Moon, Jong-Hwa ; Kang, Young Hwan ; Cho, Seung-Yon ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 131~139
There is personal difference in the concentrations of trace elements in human hair according to human life or history suck as occupation, race, sex, age, food habit, social condition and so on. It is also found that the individual's deviation of elemental concentrations is reflecting the degree of environmental pollutants exposure to human body, intakes of food and metabolism. To compare the degree of accumulation in the hair tissue, human hair samples were collected from five positions of head and analyzed by non-destructive neutron activation analysis with and without washing according to IAEA's recommended method. Analytical quality control is performed using the certified reference material. The relative error of Cu, Cr, Na, Co, Mg, As, Se, Zn and those of Mn, Ca, Fe, Sr are within
, respectively and the relative standard deviation of elements are within
. The deviations between the individuals and hair sampling positions were estimated. The deviation of individual was seven times more than that of positions. Under the defined condition, the difference and the correlation of elemental concentrations were compared with two different groups, office and factory workers. The result can be used as a fundamental data for human health and environment assessment.
Determination of Heavy Metals for Sediment Proximated to Water in Lake(II)
Park, Sun-Ku ; Kim, Sung-Soo ; Ko, Oh-Suk ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 140~146
The study was carried out to analyze the pollutants, Fe, Cu, Cr, Zn, Cd for 3 sediments of 5 sites collected from lake in K river basin. 5cm sediment, which is nearly proximated to water from sediment of depth 30cm, showed higher Fe, Cu, Cr, Zn, Cd data than another 5-10cm and 10cm sediment, which is separated from sediment of depth 30cm. Also, 5cm sediment nearly proximated to water showed the following data: Fe, 34.9-39.8mg/L, Cu, 34.5-44.8mg/L, Cr, 68.0-79.2mg/L, Zn, 147.4-126.0mg/L, Cd, 2.2-1.0mg/L, respectively. From this results, we know the fact that the pollution degree of sediment has an effect on the water quality in like and stream.
Analysis of PCDD/Fs and PCBs in Human Blood and Characteristics of Contamination Sources
Yang, Yoon Hee ; Kim, Byung Hoon ; Chang, Yoon Seok ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 147~158
Polychlorinated dibenzo-p-dioxins(PCDDs), dibenzofurans(PCDFs), and biphenyls(PCBs) were analyzed by HRGC/HRMS in human blood samples from the Siwha industrial area in Korea. The PCDD/F and PCB concentrations in workers were higher than those in residents. The average TEQ concentrations of PCDD/Fs in workers and residents were 40.3 pg I-TEQs/g lipid and 16.6 pg I-TEQs/g lipid, respectively, and the total PCB concentrations were 174.1 ng/g lipid and 151.0 ng/g lipid, respectively. When applied to principal component analysis, the PCDD/F congener distributions of workers were differentiated from those of residents. But, all of them were similar to the distribution in several Korean foods. Estimated daily intake(EDI) of each person was calculated, and then only 40% to the total people were within the tolerable daily intake range(1-4pg I-TEQ/kg bw/day) suggested by WHO(1997).
Differences in Structural Characteristics and Eu(III) Complexation for Molecular Size Fractionated Humic Acid
Shin, Hyun-Sang ; Rhee, Dong-Seok ; Kang, Kihoon ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 159~166
A humic acid(HA, Aldrich Co) sample was subjected to ultrafiltration for molecular size fractionation and three fractions of different nominal size(
: 1,000-10,000 daltons;
: 10,000-50,000 daltons;
: 100,000-300,000 daltons) were obtained. The structural characteristics of the size-fractionated HA were analyzed using their IR and solid state C-13 NMR spectral data, and the carboxylate group contents of the humic acids were determined using their pH titration data. The
excitation spectra of Eu(III) complexes of the size-fractionated mgHA in aqueous solution were acquired(
) at pH 5.0 using a pulsed tunable laser system, in which metal binding properties of the size-fractionated HA were elucidated and compared on another. Characterization of the IR and C-13 NMR spectral data indicated that the fraction(
) with molecules of larger size were primarily aliphatic, while the fractions(
) with smaller molecules of less than 50,000 daltons were predominantly aromatic. Titration data were consistent with an increase in the number of carboxylate groups per unit mass as molecular size became smaller. The
excitation spectral data of Eu(III)-humate complexes showed that the peak maxima on these spectra were shifted toward lower energies with increasing molecular size of HA, indicating the higher degree of bindings of the Eu in the molecules of larger size. We also discussed the relationship of the lower energy shifts of the maximum peaks with increasing the molecular size of HA with the structural differences of the size-fractionated HA.
Collecting of Hanji Fibrous Sludge with Surfactant
Choi, Hee-Seon ; Kim, Tai-Jin ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 167~172
The technique that could collect efficiently the hanji fibrous sludge from wastewater using surfactants was developed. When fibrous sludge of which concentration was about 80mg/L, was floated and collected, the optimum concentration of sodium oleate, the pore size of glass filter and the air flow rate were 10mg/L,
and 200mL/min., respectively. The behavior of sodium oleate might be interfered by polyvalent cations such as
. But when the concentration of
was less than 100mg/L, the interference effect did not appear. And when a typical cationic surfactant, cetyltrimethylammonium bromide(CTAB), was used, the collecting yield was less than that of sodium oleate, and the amount of foam was higher than sodium oleate. When 1mg/L of CTAB was added to the hanji sludge sample contained 1mg/L of
, a dispersant, fibrous sludge was effectively coagulated, the flotation time was very short and the collecting yield was above 95%. But in the case, sodium oleate was inefficient.
Comparison of Heavy Metals Analysis in Sediment
Park, Sun-Ku ; Song, Ki-Bong ; Cho, Ki-Hwan ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 173~179
The study was carried out to analyze the pollutant Fe, Cu, Cr, Zn, Cd for sediments collected from lake in K river basin. Three analytical methods currently used in Korea, Japan, U.S.A, were compared. Pretreatment using microwave digestion showed higher analytical results for Fe, Cu, Cr, Zn, Cd than Korean Official Method(KOM) and American Toxicity Characteristic Leaching Procedure(TCLP) Method. Also, analytical results using microwave digestion, TCLP and KOM were as follows: 38.1-48.0 mgFe/kg, 10.2-15.9 mgFe/kg AND 3.5-12.6 mgFe/kg, 37.0-50.1 mgCu/kg, 0.06-0.24 mgCu/kg and 0.01-0.03 mgCu/kg, 137.0-152.0 mgZn/kg, 0.67-0.82 mgZn/kg and 0.3-0.5 mgZn/kg, respectively. From this result, a new analytical method for the determination of heavy metal in sediment should be developed for the accurate estimation of pollution degree in sediment.
Method Development for the Odor-Active Compound Determination by Gas Chromatography/Flame Ionization Detection/Olfactometry
Kim, Man-Goo ; Jung, Young-Rim ; Seo, Young-Min ; Yang, Hee-Hwa ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 180~190
Oder-active compounds are complex in a sample. These compounds are usually analyzed by GC or GC/MSD while such analytical measurement can quantify specific volatile organic compounds, it has limitations in identifying odor-active compounds. To resolve this problem, GC-Sniffing or GC-Olfactometry method has been attempted. In this study, GC/FID/Olfactometry system was developed. This system can simultaneously sniff and detect GC effluents by traditional GC combined with human olfactory system. The time gap between FID and ODP response was dependent on the kinds and concentrations of chemicals and panels, with more volatile, stronger and shorten breath cycle panel showing narrow time gap. Thus, clear relationship between FID and ODP should be considered to identify the odor-active compounds.
Toxic Evaluation and Chromatographic Analysis of Cucurbitacin D and F from Sorbaria sorbifolia
Lee, Sang-Myung ; Lee, Cheal-Gyu ;
Analytical Science and Technology, volume 14, issue 2, 2001, Pages 191~195
Cucurbitacin D and F, the protostane type triterpenoid of S. sorbifolia, were isolated with chromatograpic method and used as the standard substances for quantitative analysis. The compounds were identified with
-NMR, FAB-MS and UV spectrophotometer. They were separated on YMC-Pack ODS-AQ(303)[
, 120A] column by HPLC. Cucurbitacin F was detected at 10.73mg/kg in cortex of S. sorbifolia, but cucurbitacin D was not. The compounds were shown to exihibit significant cytotoxicity(
) against several tumor cell lines and acute toxicity(cucurbitacin D: 4.7mg/kg/day, cucurbitacin F: 2.5mg/kg/day) against BDF-1 mouse.