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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Analytical Science and Technology
Journal Basic Information
Journal DOI :
The Korean Society of Analytical Science
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Volume & Issues
Volume 19, Issue 6 - Dec 2006
Volume 19, Issue 5 - Oct 2006
Volume 19, Issue 4 - Aug 2006
Volume 19, Issue 3 - Jun 2006
Volume 19, Issue 2 - Apr 2006
Volume 19, Issue 1 - Feb 2006
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Determination of bromine in 1000 ㎍/g Cl standard solution by ID-ICPMS
Park, Chang Joon ; Suh, Jung Kee ; Song, Hyun Joo ; Lee, Dong Soo ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 1~8
The isotope dilution method was used for the determination of Br impurity in
Cl standard solution. Since relatively pure KCl salt was used for the preparation of the Cl standard solution, the Br impurity determination suffers from both spectral and non-spectral interferences due to the presence of a large amount of K and Cl matrices. AG2-X8 anion-exchange resin was employed to separate the Br analyte from the matrices, and RF power was raised to 1500 W and nebulizer gas flow rate was lowered to 0.77 L/min to reduce background from the
molecular ions. The Br impurity in the
Cl standard solution was determined to be 43.7 ng/g with the standard addition method. The analytical result was in good agreement with 41.2 ng/g (RSD 1.6%) determined by the isotope dilution method to lower uncertainty from poor reproducibility of the anion-exchange process.
Surface plasmon resonance sensor
Han, Won-Sik ; Jung, Kyu-Jin ; Lee, Sang-Won ; Hong, Suk-Young ; Lee, Young-Hoon ; Hong, Tae-Kee ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 9~17
The application and analysis of the interaction of various biomaterials including the concentration of biomaterials, thickness, and the ability of the detection of the analytical kinetic data of special biomaterials have been performed by SPR(surface plasmon resonance) sensor. To fabricate the scanning SPR, we designed data acquisition board and LabVIEW program for the personal computer to control the SPR sensor and collect the data from detector.
A study of characteristics of cumulative deposition of fallout Pu in environmental samples
Lee, Myung Ho ; Song, Byoung Chul ; Jee, Kwang Yong ; Park, Yeong Jae ; Kim, Won Ho ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 18~30
This paper describes the cumulative deposition of fallout Pu in soil and lichen at the present time and give the characteristics of fallout Pu deposits in the soil. In the soil of the forest, the accumulated depositions of
were estimated to be in the range of 34.0 to
with an average value of
. The average inventory of
in the forest was calculated to be two times higher than that in the hill. Also, the deposited activities of
in cultivated soil were significantly lower than those in the hill or forest. However, the cumulative depositions of fallout Pu in the volcanic ash soil on Cheju Island were much higher than those in the forest and hill soils. The measured activity concentrations of Pu isotopes in lichens and mosses showed large variations, due to characteristics of species and life span of lichen and moss colonies. From depth profiles, it was found that most of the fallout Pu has been accumulated in upper 10 cm layer of soil. Except for a few cases, the concentrations of
in soil tended to decrease exponentially with increasing soil depth. Among parameters affecting the cumulative deposition of fallout Pu, organic substances and rainfall play an important role in the retention and relative mobility of fallout Pu in the soil. However, pH showed a weak correlation with the deposition of fallout Pu in the soil. From sequential leaching experiments, Pu was found to be associated predominantly with the "organic" and "oxy-hydroxy" fractions. Both the activity ratios of
in soils, lichens and mosses and the atomic ratios of
in soils are close to those observed in the cumulative deposit global fallout from nuclear weapon testings. The results obtained from this research make it possible to interpret and predict the behavior of fallout Pu under natural conditions.
Analysis of dye components using MECC and ion-pairing chromatography
Jeong, Hyuk ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 31~38
Micellar electrokinetic capillary chromatography(MECC) and HPLC with ion-pairing mechanism were applied for the separation of the well known environmental wastes from dye industry. These compounds include H-acid, J-acid,
-acid, orthanilic acid, sulfanilic acid and 2-naphthylamine-1,5-disulfonic acid, and are known to be the diazo components of the azo dye. MECC method was also applied to separate few acid dyes including Acid Orange 7, Acid Orange 5 and Acid Blue 92 and direct dye such as Direct Red 80. Informations about the diazo components of any azo dye could be obtained by comparison of electropherogram of the reduction solution of a given dye with those obtained from standard materials such as H-acid, J-acid,
-acid, orthanilic acid, sulfanilic acid and 2-naphthylamine-1,5-disulfonic acid. It has been concluded that MECC and HPLC with ion-pairing mechanism could be successfully applied for the analysis of unknown dyes and their diazo components.
Antioxidant activities of Pu-erh tea
So, Eun Mee ; Jung, Eun Joo ; Shin, Chang Chul ; Kim, Sung Hyun ; Baek, Soon Ok ; Kim, Young Man ; Kim, Il Kwang ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 39~44
Puh-erh tea was extracted with water and then fractionated sequentially with n-hexane, ethyl acetate, n-butanol to find antioxidative compounds. The fractions were examined on the antioxidant activity using two different methods, free radical scavenging activity measurement and reductive potential. Those antioxidant activities were compared to standard antioxidants such as butylated hydroxyanisole(BHA), butylated hydroxytoluene (BHT), and
-tocopherol. EA fraction of Pu-erh tea was showed excellent antioxidative activities over BHA and BHT.
The study of elemental depth distribution at the Jinheung catchment sediment core
Yoon, Yoon Yeol ; Yang, Dong Yoon ; Nahm, Wook Hyun ; Cho, Soo Young ; Lee, Kil Yong ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 45~49
Drilled sediment core was acquired from Jinheung catchment which was located at Jeollabuk-do Jeongeup city. Elements concentration variation were studied by neutron activation analysis using sediment core by divided 1 cm depth interval. The concentration of major element such as Na, K were increased but Fe was decrease with depth. Minimum elements concentration and particle size were observed at 17 cm depth. This depth was considered 1969 year which was great dry year recorded from the rain fall data and the sedimentation rate was calculated
Study for the separation and comparison of azo dyes and their diazo components
Jeong, Hyuk ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 50~57
Well known environmental wastes from dye industry were separated by the micellar electrokinetic capillary chromatography(MECC). These wastes include H-acid modifier and 2-naphthylamine-1,5-disulfonic acid, and are known to be the diazo components of the azo dye. The results of the separation were compared with the result obtained by the HPLC using ion-pairing mechnism. MECC method was also applied to separate a few direct dyes including Direct Blue 2, Direct Blue 6 and Direct Blue 15, and reactive dye such as Reactive Orange 4. Informations about the diazo components of any azo dye could be obtained by comparison of electropherogram of the reduction solution of given dye with those obtained from standard materials such as H-acid, J-acid,
-acid, orthanilic acid, sulfanilic acid and 2-naphthylamine-1,5-disulfonic acid which are used as diazo components of the typical azo dyes. It has been concluded that MECC and HPLC with ion-pairing mechanism could be successfully applied for the analysis of unknown dyes and their diazo components.
Electrochemical properties of the mugwort-embedded biosensor for the determination of hydrogen peroxide
Lee, Beom-Gyu ; Park, Sung-Woo ; Yoon, Kil-Joong ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 58~64
A mugwort-tissue-based modified carbon paste electrode was constructed for the amperometric detection of hydrogen peroxide and its electrochemical properties are described. Especially the amperometric signal was very stable and bigger than any other enzyme electrode studied in this lab. The effect of tissue composition on the response was linear within the wide range of experiment and the linearity of Lineweaver-Burk plot showed that the sensing process of the biosensor is by enzymatic catalysis. And pH dependent current profile connoted that two isozymes are active in this system.
A test of the filtering efficiency of glass fiber filter against atmospheric sulfur gases
Kim, K.H. ; Choi, Y.J. ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 65~72
In this study, the filtering characteristics of sulfur gases were investigated from a number of respects. For the purpose of this study, a standard gas containing a single oxidized S (
) and five reduced S compounds (RSCs) including
, and DMDS was prepared. After flowing this standard gas through a glass fiber filter, its removal efficiencies were examined by comparing the concentrations between prior to and after its passage. The results indicated that almost complete removal of
was achieved by this filtering, while the patterns for RSCs were distinguished by such factors as molecular weight or reactivity. It was found that about 60% of the most reactive RSC,
was removed by filter, while the heavy RSC generally showed removal rate of about 5% or less.
Evaluation of human exposure to polychlorinated biphenyls using human serum by congener-specific analysis
Park, Hyo-Keun ; Lee, Se-Jin ; Jin, Guang-Zhu ; Kang, Jung-Ho ; Baek, Song-E ; Chang, Yoon-Seok ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 73~85
Blood serum concentrations of polychlorinated biphenyls (PCBs) were measured in employees who worked at a municipal solid waste incinerator (MSWI), members of residential community who lived near the MSWI (<0.3km) and members of residential community lived far from the MSWI (>10 km). Human blood serum samples were analyzed for all PCB congeners using high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS). The mean levels of total PCBs and dioxin-like PCBs in 87 serum samples were 242.77 ng/g lipid and 8.83 TEQ pg/g lipid, respectively. The PCB homologue profiles showed that penta-, hexa-, hepta-chlorinated biphenyls contributed more than 80% of the total PCBs concentration. The most abundant congeners were PCB153, PCB138, PCB180, PCB187, PCB118. A statistical analysis was performed to determine whether there were significant correlations between PCB concentrations and specific variables such as age, gender, smoking habits, occupation, BMI (Body Mass Index) and time of residence. As a result, the age was found to be strongly correlated with serum PCB concentrations. In addition, there were strong correlations between total PCBs and PCB153 (r=0.93, p<.0001), dioxin-like PCBs and PCB118 (r=0.98, p<.0001). So these two congeners are satisfactory indicators for total PCB concentrations and dioxin-like PCBs in human blood respectively.
The analysis and leaching characteristics of organic compounds in incineration residues from municipal solid waste incinerators
Hong, Suk-Young ; Kim, Sam-Cwan ; Yoon, Young-Soo ; Park, Sun-Ku ; Kim, Kum-Hee ; Hwang, Seung-Ryul ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 86~95
This study was carried out to estimate leaching characteristics of incineration residues from municipal solid waste incinerators, and determine organic compounds in raw ash, leaching water and leaching residue. A total of 44 organic compounds, which were analyzed by GC/MSD and identified by wiley library search, were contained in bottom ashes. A total of 17 organic compounds were contained in fly ashes. Bottom ash and fly ash were found to contain a wide range of organic compounds such as aliphatic compounds and aromatic compounds. Organic compounds such as Ethenylbenzene, Benzaldehyde, 1-Phenyl-Ethanone and 1,4-Benzenedicarboxylic acid dimethyl ester were detected in raw ash, leaching water and residues (from bottom ash). Organic compounds such as Naphthalene, Dodecane, 1,2,3,5-Tetrachlorobenzene, Tetradecane, Hexadecane and Pentachlorobenzene were detected in raw ash, leaching water and residues (from fly ash). Through the leaching characteristics of incineration residue, it was represented that the open dumping of incineration residue can contaminate the soil and undergroundwater. In order to prevent environmental contamination that derived from extremely toxic substances in the incineration residues, it is particularly important that the incineration residues should be treated before disposal the incineration residues. Further study and proper management about leaching characteristics of organic compounds might be required.
Measurements of Trimethylamine (TMA) in air by Tedlar bag sampling and SPME analysis
Kim, K.H. ; Hyum, S.H. ; Im, M.S. ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 96~102
Trimethylamine (TMA) is one of the difficult odorous compounds for the collection and analysis. Although sulfuric acid absorption and/or sulfuric acid impregnated filter method are commonly recommended for its sampling, these methods also suffer from difficulties involved in sample treatment and operational procedures. Hence, as an ancillary approach to measure TMA, we investigated the combination of bag sampling and SPME analysis for TMA measurements. For the purpose of our study, we investigated the following three subjects: 1) temporal variability of standard storage, 2) bag loss effect of TMS, and 3) TMA loss due to repetitive analysis of an identical bag sample. According to our storage test up to 7 or 20 dyas, TMA loss were found to occur up to 40 to 50% within relatively short period of up to 48 hrs depending on its concentration ranges. When the tests were made for bag loss by transferring TMA standards across different size bags, we were able to find that the extent of bag loss are not significant with 5 to 20% loss rate. Finally, the TMA sorptive loss via its exposure to SPME fiber was generally estimated to run from 2 to 3%.
Acute cocaine intoxication in a body packer
Park, Mee-Jung ; Lim, Mi-Ae ; Chung, Hee-Sun ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 103~106
A 35-year-old Perubian who suffered from grand mal seizures died in the aircraft on his way from the United States to Hongkong via Incheon international airport of Korea. While performing the autopsy, 115 packs made with double layer of transparent film and black plastic bag containing cocaine were found in the ileum and large intestine. Among of them, 3 packs were ruptured. To determine the concentration of cocaine and its metabolites, blood, urine, bile, liver, spleen, heart, kidney, brain and gastric contents were taken and toxicological analysis was performed. Gas chromatography/mass spectrometry (GC/MS) following liquid-phase extraction using chloroform:isopropanol (=9:1) and derivatization with bis(trimethylsilyl)-trifluoroacetamide (contains 1% trimethylchlorosilane) was performed. High levels of cocaine, benzoylecgonine (BE) and ecgonine methylester (EME) were found in the postmortem blood (0.96, 3.09 and
) and urine (32.85, 145.35 and
), respectively. Cocaine and its metabolites were also detected in all other biological specimen.
Simultaneous GC/MS Analyses of Organic acids and Amino acids in Urine using TMS-TFA derivative
Yoon, Hye-Ran ;
Analytical Science and Technology, volume 19, issue 1, 2006, Pages 107~114
Early diagnosis and medical intervention are critical for the treatment of patients with metabolic disorders. A rapid analytical method was developed for simultaneous quantification of organic acids and amino acids in urine without labor-intensive pre-extraction procedure showing high sensitivity and specificity. A new method consisted of simple two-step trimethylsilyl (TMS)-trifluoroacetyl (TFA) derivatization using GC/MS-selective ion monitoring (SIM). Filter paper urine specimens were dried under nitrogen after being fortified with internal standard (tropate) in a mixture of distilled water and methanol. Methyl orange was added to the residue as indicator reagent. Silyl derivative of carboxylic functional group was followed by trifluoroacetyl derivative for amino functional group. N-methyl-N-(trimethylsilyl-trifluoroacetamide) and N-methyl-bistrifluoroacetamide were consecutively added and heated for 15-20 min at
, for TMS-TFA derivative, respectively. This reactant was analyzed by GC/MS-SIM. Linear dynamic range showed 0.001-50 mg with the detection limit of (S/N=3) 10-200 ng, and the quantification limit of 80-900 ng in urine. Correlation coefficient of regression line was 0.994-0.998. When the method was applied to the patients 'urine, it clearly differentiated the normal from the patient with metabolic disorder. The study showed that the developed method could be the method of choices in rapid and sensitive screening for organic aciduria and amino acidopathy.