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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 23, Issue 6 - Dec 2010
Volume 23, Issue 5 - Oct 2010
Volume 23, Issue 4 - Aug 2010
Volume 23, Issue 3 - Jun 2010
Volume 23, Issue 2 - Apr 2010
Volume 23, Issue 1 - Feb 2010
Selecting the target year
Characterization of Fe-ACF/TiO
composite and photocatalytic activity for MB Solution under visible light
Zhang, Kan ; Meng, Ze-Da ; Oh, Won-Chun ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 225~232
DOI : 10.5806/AST.2010.23.3.225
In present study, a conventional sol-gel method was used to prepare Fe-ACF/
composites, a kind of composite photocatalysts, whose capability was evaluated by degrading methylene blue (MB) solution. The particle size, surface structure, crystal phase and elemental identification of the composites prepared were characterized by BET, SEM, XRD and EDX, respectively. The spectra of MB concentration degraded under visible light were obtained by UV/Vis spectrophotometer. These obtained spectra demonstrated the photocaltalytic activity from removal concentrations of MB. It was considered that these photonic activities are induced by a strong synergetic reaction among ACF,
and Fe in the composite photocatalysts under visible light.
Fabrication of ordered porous nanocomposite materials using templating
Lim, Chang-Sung ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 233~239
DOI : 10.5806/AST.2010.23.3.233
Pure macroporous silica matrix using a template of polystyrene (PS) was prepared by the sol-gel method. Macroporous Ag-
composite materials, which were homogeneously dispersed with Ag particles in the macropores, were successfully fabricated. The pure porous silica had ordered pore sizes of 100 nm and 200 nm, which was adjusted under consideration of the template size. The macroporous Ag-
composite showed the ideal ordered distribution of the pore in case of the adding of 3 wt%
under consideration of controlling of the pore size as well as microstructural observation of
concentration. The macroporous Ag-
composites had ordered 100 nm and 200 nm pores, and the Ag particles within the matrix showed the size of 15~20 nm.
Determination and preconcentration of Cu(II) using microcrystalline p-Dichlorobenzene loaded with salicylaldoxime
Lee, Ha-Na ; Choi, Hee-Seon ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 240~246
DOI : 10.5806/AST.2010.23.3.240
A technique for the determination of trace Cu(II) in various real samples by FAAS after the column preconcentration onto p-dichlorobenzene-SA adsorbent, which is microcrystalline p-dichlorobenzene loaded with salicylaldoxime (SA) has been developed. Several experimental conditions such as pH of the sample solution, the amount of chelating agent salicylaldoxime, the amount of adsorbent p-dichlorobenzene-SA, and flow rate of sample solution were optimized. The interfering effects of various concomitant ions were investigated.
interfered more seriously than any other ions. However, the interference by
could be overcome completely by controlling the concentration of Ni(II) to
. The linear range, correlation coefficient (
) and detection limit obtained by this technique were
, 0.9901, and
, respectively. For validating this technique, the aqueous samples (wastewater, reservoir water and stream water) and the food samples (orange juice, fresh egg and skim milk) were used. Recovery yields of 93~104% were obtained. These measured mean values were not differents from ICP-MS data at 95% confidence level. The good results were obtained from the experiments using the rice flour certified reference material (CRM) sample. Based on the experimental results, it was found that this technique could be applied to the preconcentration and determination of Cu(II) for various real samples.
Estimation on the application of Reference Materials for PCBs Proficiency Testing from the transformer oil
Kim, Woo-Il ; Kwon, Myung-Hee ; Jeon, Tae-Wan ; Kim, Dong-Hoon ; Chun, Jin-Won ; Sim, Ki-Tae ; Yeon, Jin-Mo ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 247~254
DOI : 10.5806/AST.2010.23.3.247
This study was carried out to produce Reference Materials (RMs) for Proficiency Testing (PT) of PCBs in waste analytical laboratories. Two RMs were prepared from used transformer oil samples and PCB free transformer oil by spiking PCBs standard solutions. The spiked PCB RMs were homogenized by mixing and settling up to 90 days. Homogenized concentration of PCBs with Arochlor 1254 (6 ppm), 1254:1260 (1:1) (5 ppm) were observed in 60 days stationary phase but Arochlor 1260 (3.5 mg/L) were observed in 90 days stationary phase. One-way ANOVA test were carried out and showed that the RMs were suitably homogenized, which can be used for proficiency testing. The Relative Standard Deviations (RSDs) of analytical results were 3.51~5.01% for the PCBs RMs in 10 replicates. The expanded uncertainty of PCBs analytical procedure were 0.26~0.49.
The TVOC management level evaluation of adhesive product following to simultaneous revision of indoor air quality testing methods and standards
Yoo, Ji-Ho ; Park, Joon-Man ; Kim, Man-Goo ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 255~260
DOI : 10.5806/AST.2010.23.3.255
The Ministry of Environment simultaneously revised testing methods and emission standards of adhesives product on the "Law of indoor air quality management" for the effective management of the building materials releasing pollutants in great quantities. Accordingly, it is impossible to compare original standards with revised standards directly. The influences of each factor of the revised testing methods of adhesive product on the emission rate of pollutants are reviewed through comparing with the original testing method. Through this study, revised pollutant emission control standards were assessed. With the result that it is found that emission rate of adhesives product is weakened two and half times by changing test period and the emission rate resulting from changing drying time has little difference. As a result of comparing TVOC emission standards with the original testing method considering the modification of testing methods, it is found that the emission standard through this revision is strengthened about 2.1 times more than that of present testing method.
Assessment of PCBs-containing solid wastes using official wastes test method
Kim, Kyeo-Keun ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 261~268
DOI : 10.5806/AST.2010.23.3.261
This study was performed to evaluate the PCBs-containing wastes using official test method. Ninety samples of transformer oil and various solid waste were collected to assess the analytical results. In the analysis of PCBs-containing wastes, the PCBs levels were detected in the range of 7.6 mg/kg to 23.8 mg/kg for transformer oils,
for plat solid wastes, and 0.01~0.071 mg/kg for amorphous solid waste. In the cupper wire waste of the transformer with oil concentration level of 23 mg/kg, the analytical result exceed PCBs regulation level of 0.04 mg/kg. The new proposed analytical method for PCBs containing waste can be forced to effective management of the wastes.
Distribution and emission source of PAHs in ambient air of Seoul
Park, Jin-Soo ; Yoon, Seong-Kyu ; Bae, Woo-Keun ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 269~277
DOI : 10.5806/AST.2010.23.3.269
Air samples were collected and analyzed to investigate regional level of PAHs and its emission sources. The average concentrations of PAHs in the suburban (Gwanak) and in the urban (Seodaemun) area were
, respectively. Phenanthrene, fluoranthene, pyrene, and fluorene were predominant PAHs species, as their sum contributed to 55.6% and 60.8% of the total PAHs, respectively. The possible major source of PAHs was suspect to be the combustion of diesel fueled vehicles in both areas, particularly for Seodaemun.
Comparison of three analytical methods for PCBs-containing liquid wastes
Kim, Kyeo-Keun ; Yoon, Seong-Kyu ; Bae, Woo-Keun ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 278~283
DOI : 10.5806/AST.2010.23.3.278
This study was performed to compare the analytical results among L2000DX and two GC/ECD methods (rapid and conventional). 15 samples of transformer oils were collected to compare the analytical results. In the analytical results of PCBs-containing transformer oil, the PCBs concentrations were in the range of 4.4 mg/L to 182.8 mg/L with L2000DX, N.D. to 14.63 mg/L with conventional GC/ECD, and N.D. to 13.03 mg/L using rapid GC/ECD. The PCB concentrations detected with the L2000DX showed a large difference to those detected with GC/ECD methods. Otherwise, little difference was shown between the two GC/ECD methods at a concentration range lower than 4 mg/L, although the rapid GC/ECD method tended to detect a slightly lower concentration near the regulation criteria of Korea for 2 mg/L.
Evaluation of the proficiency testing results using river water-based reference materials for heavy metal analysis
Song, Ko-Bong ; Kim, Young-Hee ; Shin, Sun-Kyoung ; Lee, Su-Yeong ; Kim, Hyun-Jung ; Kang, Hak-Gu ; Kim, Il-Gyu ; An, Hee-Ju ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 284~294
DOI : 10.5806/AST.2010.23.3.284
In this study, river water-based reference materials (RMs), NIER-I08RW and NIER-I09, for trace metal analysis were prepared and certified for Pb, Cd, Cr and Cu with evaluation of uncertainties. The RMs were confirmed to be homogeneous enough to be used as proficiency testing materials since within-bottle homogenieties of the RMs were lower than 0.3 times of targeted standard deviation of proficiency testing. The RMs were distributed to environmental testing laboratories for the proficiency testing and the variation of Z scores of the proficiency testing results were compared for different assigned values. The relative bias,
, deviations between reference values and consensus values, were lower than
1 except for cadmium of NIERI08RW. The results showed both values were in a good agreement and only 2.9% of Z scores changed by using a different assigned values such as consensus and reference values.
Preparation of wastewater-based reference materials for heavy metal analysis and interlaboratory study
Kim, Young-Hee ; Song, Ki-Bong ; Shin, Sun-Kyoung ; Lee, Jung-Sub ; Jeong, Gi-Taeg ; Hong, Eun-Jin ; Park, Jin-Ju ; Yu, Suk-Min ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 295~303
DOI : 10.5806/AST.2010.23.3.295
In this study, the wastewater-based reference material (RM) was prepared and certified for 7 trace metal elements with evaluation of uncertainties. The RM was distributed to 25 laboratories for the interlaboratory comparison testing. The certified values and expanded uncertainties were derived using ISO guideline 35 and the standard uncertainties for homogenieties were 0.43~2.67% of certified values. The analytical results from the interlaboratory comparison testing showed normal distributions and the robust means from the interlaboratory comparison testing were higher than the certified values of the RM for all analytes.
The study of nondestructive evaluation method of paper records materials by NIR spectroscopy
Han, Yoon-Hee ; Shin, Yong-Min ; Park, Soung-Be ; Nam, Sung-Un ; Kim, Hyo-Jin ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 304~311
DOI : 10.5806/AST.2010.23.3.304
Near Infrared Spectroscopy (NIRs) has been applied for rapid and nondestructive paper measurement by replacing the current destructive method to the property of paper. Current standard methods for the property of paper were pH, moisture, breaking length, and folding endurance, which data were compared with spectrum of FT-NIR spectrometer. Various paper products such as copy, envelope, white, newspaper, as well as old paper produced around 1960~1980 were used as the sample. The correlation (
) and standard error of prediction (SEP) results for breaking length, folding endurance, moisture and pH are
=0.941, SEP=0.931, pH
=0.949, SEP= -0.0631, respectively. This result show that NIRs can be applied to practical application for nondestructive analysis of paper records materials.
Distribution and exposure assessment of indicator PCBs in Food
Oh, Keum-Soon ; Suh, Jung-Hyuck ; Paek, Ok-Jin ; Park, Seong-Soo ; Na, Young-Joon ; An, Yeong-Sun ; Kim, Mee-Hye ; Lee, Kwang-Ho ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 312~321
DOI : 10.5806/AST.2010.23.3.312
Seven indicator PCBs (IUPAC nos 28, 52, 101, 118, 138, 153, 180 congeners) concentrations were measured in food samples including cereal (polished rice), meats, eggs, milk and dairy products, and fisheries and products as representation for the general Korean populations during 2006-2007, and was analyzed using isotopic dilution method. Fishes had the highest average level as 39.8 ng/g, 1.4 ng/g for milk and dairy products, and 0.9 ng/g for meats. The hairtail out of fishes was contaminated at the level of 15.4 ng/g, 5.4 ng/g for pacific mackerel and spanish mackerel, and 4.5 ng/g for yellow croaker. The ratio for indicator PCBs in overall food was contributed as follows; 35.8% for PCB-153, 16.2% for PCB-138, 16.1% for PCB-101, 13.4% for PCB-118, 8.8% for PCB-180, 6.9% for PCB-52, and 2.9% for PCB-28. The hexa-CBs including PCB-153 and 138 were more predominated, and the next was penta-CBs including PCB-101 and 118 in food. For estimated daily intake (EDI) in average and
percentile, fishes and products out of overall food were taken to represent over 50%. However, it was estimated that there was no adverse health effect for Korean.
Analysis of rifle and pistol primer gunshot residue using SEM-EDX
Jeon, Chung-Hyun ; Park, Sung-Woo ;
Analytical Science and Technology, volume 23, issue 3, 2010, Pages 322~329
DOI : 10.5806/AST.2010.23.3.322
Primer gunsot residues (GSR) obtained from K1A and K2 rifles, and K5 pistol were analysed with scanning electron microscopy/energy dispersive X-ray spectrometry (SEM-EDX) as basic data in firearm accidents. Ammunition of 5.56 mm is employed for K1A and K2 rifles and 9.0 mm for a K5 pistol. The analyses of morphology, size, particle number, elemental ratio were performed for primer GSR prepared after shooting 3 times. The detected content was Ba>Pb>Sb in most GSR particles but Sb>Pb>Ba or Pb>Sb>Ba in some particles. In the statistical result of composition ratio of elements, the particles with more Sb than Ba were detected in most primer GSR from a K5 pistol, 3~8 times more than K1A and K2 rifles. This results can be employed to discriminate gun type between rifles and pistols. Furthermore, the size and the number of particles can be applied to access the type of guns.