Go to the main menu
Skip to content
Go to bottom
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 17, Issue 6 - 00 2004
Volume 17, Issue 5 - 00 2004
Volume 17, Issue 4 - 00 2004
Volume 17, Issue 3 - 00 2004
Volume 17, Issue 2 - 00 2004
Volume 17, Issue 1 - 00 2004
Selecting the target year
Synergistic Solvent Extraction of Manganese(II) by using Cupferron and Tetrabutylammonium ion
In, Gyo ; So, Jin-Hwan ; Choi, Jong-Moon ; Kim, Young-Sang ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 1~7
The synergistic solvent extraction of Mn(II) by N-nitroso-N-phenylhydroxylamineammonium salt (cupferron) and tetrabutylammonium ion (
) has been studied. In the presence of
, over 95% Mn(II) was extracted from an aqueous solution into chloroform by the cupferron in the pH range of 4 to 10. But a part of Mn(II) was extracted with only cupferron. The ternary complex of Mn(II) was more efficiently extracted into
than other nonpolar solvents. The extracted Mn(II) was determined in the back-extracted
solution by GF-AAS. This fixed procedure was applied to the determination of trace Mn(II) in tap water samples of pH 5.0. The detection limit equivalent to 3 times standard deviation of the background absorption was 0.37 ng/mL and Mn(II) was determined with the range of 0.4 to 1.01 ng/mL in our laboratory's tap water. And the recovery was 94 to 107% in samples in which 2.0 ng/mL Mn(II) was spiked. The interferences of common concomitant elements such as Cu(II), Ca(II), Fe(III) and so on were not shown up to
. From these results, this procedure could be concluded to be applied for the determination of trace Mn(II) in other environmental water samples.
Detection of Alpha Tracks of Boron by Nuclear Reaction with Neutron
Sohn, Se Chul ; Pyo, Hyung Yeal ; Park, Yong Jun ; Jee, Kwang Yong ; Kim, Won Ho ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 8~15
The detection efficiencies of the several solid track detectors were investigated for the determination of boron content in aqueous solution by using the alpha muti-Radioisotope(RI) source. Polycarbonate (Lexan and CR-39) and cellulose nitrate (CN-85 and LR-115) were selected as materials for alpha track detection of boron. Alpha muti-RI source, uranium metal particles and boron standard solution were used for alpha emission. In this study, four solid track detectors(CN-85, LR-115, Lexan and CR-39) were characterized under various etching conditions as well as neutron irradiation conditions. As a result, the CN-85 was turned out to be best to provide good efficiency among the four detectors. The selected solid track detector was utilized for the determination of trace amount of boron in aqueous sample and its results were discussed in the text.
Raman Spectra of Nitrophenol Molecules Included in Cyclodextrin Polymers Cross-linked with Epichlohydrine
Choi, Seong-Ho ; Kim, Su-Yeon ; Zhang, Yu-Ping ; Lee, Kwang-Pill ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 16~22
Inclusion complexes of the p-nitrophenol with
-cyclodextrin (CD), sulfated
-CD polymer cross-linked with epichlorohydrine (EP) were prepared and characterized by Raman spectroscopy. The intensity of vibration peaks of the C-O and C-N at 1284 and
of the p-nitrophenol in the presence of EP-linked CD polymer was remarkably increased, respectively. The vibration modes at 1284 and
are assigned to the out-of phase C-C-O stretching mode and the C-N stretching mode, respectively. The vibration peaks at 1284 and
increased with increasing the content of EP-linked CD polymers, while decreased with increasing the p-nitrophenol content. Furthermore, the vibration mode of the
symmetric stretch at
enhanced with increasing the content of p-nitrophenol.
Determination of Uranyl Nitrate with Several Ligands by Spectrophotometry
Showkat, Ali Md. ; Zhang, Yu-Ping ; Kim, Min Seok ; Kim, Sang-Ho ; Choi, Seong-Ho ; Lee, Kwang-Pill ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 23~28
Trace amount of uranyl (II) has been determined spectrophotometrically by measuring the optical density of the light blue yellowish coloured solutions formed by reaction between the metal ion and nicotinohydroxamic acid (NHx) in presence of different secondary ligands in strong isoamyl alcohol alkaline medium. The absorption maxima for both aqueous and extracted systems measured at their respective optimum pH were found to be 360 and 559 nm (DETA), 375 and 358 nm (EDA), 369 and 362 nm (piperidine), 354 and 341 nm (pyridine) and 363 and 336 nm (3 piperidine), 354 and 341 nm (pyridine) and 363 and 336 nm (3 - picoline), respectively at which Beer's law was obeyed. Effect of pH, reagent concentration, order of addition of reagent, time, temperature and solvent media on the absorption spectra have also been studied. Among the different systems studied, the shortest concentration range of uranyl(II) adhering to Beer's Law was 2.4 - 10.5 ppm observed for
- NHx - DETA system in aqueous medium and also for iso amyl alcohol(IAA) extracted
- NHx - pyridine system was 2.4 - 7.8.
Determination of Polybrominated Diphenyl Ethers(PBDEs) in Soil using Gas Chromatography/Isotope Dilution Mass Spectrometry
Na, Yuncheol ; Chang, Yoon-Seok ; Kim, Hai-Dong ; Hong, Jongki ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 29~36
An analytical method of polybrominated diphenyl ethers in soil samples by isotope dilution method using gas chromatography/mass spectrometry (GC/MS)-selected ion monitoring (SIM) was described. PBDEs in soil were extracted with soxhlet extractor and then silica and florisil solid phase extraction (SPE) methods as purification of extract were compared. After clean-up, the extractions were analyzed by GC/MS with SIM mode. Quantitation was performed isotope dilution method using four
isotopically labeled PBDEs as internal standards. This developed method was validated for eight congeners of PBDEs in the concentration range 0.04~4 ng/g in soil and the average recovery of the analytes ranged 30.8~110.8% for florisil and 44.4~110.7% for silica, respectively. The method detection limits of PBDEs were 0.04~0.3 ng/g.
Analysis on the Substrate Specificity and Stability of Hansenula polymorpha Alcohol Oxidase
Jegal, Hyang ; Cho, Hyun-Young ; Kim, Eun-Ho ; Kong, Kwang-Hoon ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 37~44
An alcohol oxidase from Hansenula polymorpha was strongly induced when cells were grown with 0.5% methanol supplementation as the carbon source. The induced Hansenula polymorpha alcohol oxidase was purified to electrophoretic homogeneity by using DEAE-Sephacel and Mono Q column chromatographys. The enzyme oxidized mainly primary aliphatic alcohols and exhibited high substrate specificity towards ethanol and methanol. The activity of the enzyme optimally proceeded at pH 8.5 and
. The midpoint of the temperature-stability curve for the enzyme was approximately
and the enzyme was not completely inactivated even at
temperature. The enzyme showed resistance toward detergents and highly stable over 7 weeks of storage condition. This Hansenula polymorpha alcohol oxidase may be useful for the enzymatic determination of alcohol and for the industrial production of alcohols and aldehydes.
Synchronous determination of polycyclic aromatic hydrocarbons(PAHs) in sediment of Ulsan Bay by synchronous 2nd derivative fluorescence spectrophotometry
Yoo, Kwang-Sik ; Jyoung, Jy-Young ; Jeong, Seon-Yi ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 45~52
Determination of some PAHs in sediments at Ulsan bay has been carried out by extraction of the components into n-hexane followed by synchronous spectrofluorimetric technique. 11 PAHs, such as acenaphthene (Ace), anthracene (Anth), benz(a)anthracene (BaA), benzo(b)fluoranthene (BbFt), benzo(k)fluoranthene (BkFt) benzo(a)pyrene (BaP), chrysene (Chry), phenanthrene (Phen), fluoranthene(Ft), perlyrene (Per), and pyrene (Pyr) in sediment samples were able to determine separately by synchronous spectrofluorimetry. Calibration curves for those components were linear for the concentration range of 0.15~166 ppb PAHs with the correlation factor of 0.9985~0.9999. The total amount of PAHs in sediments varied from 68.8 to 324.4 ng/g. The PAHs concentration was shown a tendency to increase from the outer bay to the inner basin as well the predominant contributors to the aromatic ring groups of the PAHs was 4-ring group.
Mutation Analysis in β
-Adrenergic Receptor Gene by Single Strand Conformation Polymorphism (SSCP) and Denaturing High Performance Liquid Chromatography (DHPLC)
Park, Sang-Bum ; Han, Sang-Man ; Nam, Youn-Hyoung ; Jang, Won-Cheoul ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 53~59
Up to now, methods for the detection of genetic alterations as single strand conformation polymorphism (SSCP) or denaturing gradient gel electrophoresis (DGGE) have been used. It is too labor-intensive and expensive to serve for routine analysis. Moreover, lower in its sensitivity and specificity being also strongly dependent on the experience of the investigater. To improve these problems, we analysed mutation of
-adrenergic receptor gene that controls bronchial asthma by denaturing high performance liquid chromatography (DHPLC) according to ion-pair reversed phase chromatography (IP-RPC). We extracted genomic DNA from 80 asthma patients and then amplified DNA using PCR and analysed PCR product by SSCP and DHPLC. As a result, we analysed mutation frequency is 19 (23.75%) on SSCP and 25 (31.25%) on DHPLC in
-adrenergic receptor gene. We conclude that DHPLC is a fast and simple screening method rather than SSCP analysis.
Electrochemical Properties of Core-Shell Polyolefin Nonwoven Fabric Modified with Sulfonic Acid Group
Choi, Seong-Ho ; Zhang, Yu-Ping ; Shon, Sang-Ho ; Lee, Kwang-Pill ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 60~68
The core-shell polyolefin nonwovon fabric (PNF), wherein the PNF comprises at least about 60% of polyethylene having a melting temperature at
and no more than about 40% of second polypropylene having a lower melting temperature at
. The sulfonic acid group for battery separators were prepared by radiation-induced grafting of styrene onto PNF and by the subsequent sulfonation of polystyrene graft chains. The sulfonated PNF was characterized by XPS, SEM, DSC, TGA and porosimeter. The electrochemical properties such as electrolyte retension, electrical resistance, and transport number of the
were evaluated after sulfonation. It was found that the electrolyte retension increased, whereas the electrical resistance decreased with increasing sulfonic acid content. The transport number of
in PNF with sulfonic acid of 0.22 ~ 3.60 mmol/g was to be 0.90 ~ 0.93.
A Study on Formation Pattern of DBPs by Disinfection of Drinking Raw Water II
Lee, Kang Jin ; Hong, Jee Eun ; Pyo, Heesoo ; Park, Song-Ja ; Yoo, Je Kang ; Lee, Dae Woon ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 69~81
The formation pattern of DBPs (disinfection by-products) in raw water treated with hypochlorite, chlorine disinfectant was studied. TOC (total organic carbon), residual chlorine, turbidity and 14 DBPs in raw water from Han-river and Nakdong river during 1 ~ 14 days were determined. Total DBPs in Han river was 101.3 ng/mL (789.6 nM) after 7days and THMs (trihalomethanes) are the dominant portion of 68%. HAAs (haloacetic acids) and chloral hydrate were determined 19% and 10% respectively. In Nakdong river total DBPs was 98.4 ng/mL (678.6 nM) and dominant class was HAAs. (55.8 ng/mL, 57%) THMs(34%) and N-compounds like HANs (haloacetonitriles, 5%) and chloropicrin were increased. It may be explained that high concentration of NH4-N in Nakdong river react with chlorine produced chloramine and this formed different pattern of DBPs. As a result, total DBPs formation pattern depends on raw water and disinfectant and in generally the initial concentration of acidic HAAs was high and THMs was increased gradually.
The Adsorption Effect of Filter Paper on the Results of Trace Analysis
Lim, Heon-Sung ; Lee, Sueg-Geun ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 82~84
The quantitative trace analysis of ions could be deteriorated by filter papers because of the effect of adsorption. Generally the adsorption of anions on filter paper did not occurred. Instead,
ions were extracted from the filter papers. However, most metal ions were adsorbed on the filter papers by the formation of hydroxide in neutral solution. The adsorption of metal ions except
ion could be avoided depend on the acid concentrations.
Characterization of Fragrances from Lilac Blossom by Gas Chromatography-Mass Spectrometry
Kim, Nam-Sun ; Lee, Dong-Sun ;
Analytical Science and Technology, volume 17, issue 1, 2004, Pages 85~89
Fragrance components of lilac (Syringa vulgaris) blossom have been characterized in this paper. The accurate characterization of fragrances collected from lilac blossom was carried out by solid-phase trapping-solvent extraction and gas chromatography-ion trap mass spectrometry. According to lilac species, the chemical compositions were significantly different. Benzaldehyde, phenylacetaldehyde, and
-farnesene were found as the predominant component of white lilac blossom whereas benzaldehyde,
-pinene, and ocimene were those of pale purple lilac. The enantiomeric analysis of
-pinene in lilac blossom was found in the form of ( ).