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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Analytical Science and Technology
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Journal DOI :
The Korean Society of Analytical Science
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Volume & Issues
Volume 25, Issue 6 - Dec 2012
Volume 25, Issue 5 - Oct 2012
Volume 25, Issue 4 - Aug 2012
Volume 25, Issue 3 - Jun 2012
Volume 25, Issue 2 - Apr 2012
Volume 25, Issue 1 - Feb 2012
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Gas chromatographic profiles of rose essential oils: a round-robin test on oil of rose, Chinese Kushui type (Rosa sertata × Rosa rugosa)
Son, Hyun-Hwa ; Lee, Dong-Sun ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 207~213
DOI : 10.5806/AST.2012.25.4.207
Analysis of the aroma constituents present in the rose essential oil of Chinese Kushui type (Rosa sertata
Rosa rugosa) by GC-FID and GC-MS was performed independently as an expert for the inter-laboratory round-robin test to verify reproducibility according to the decision of the preliminary meeting of ISO/TC-54 (Shanghai, Sep. 14-15, 2010). Total 179 peaks (using SPB-1 apolar column), 165 peaks (using DB-624 intermediate polar column), and 162 peaks (using Supelcowax-10 polar column) were separated by GC-FID, respectively. Major constituents (over 5%) by GC-FID were
-citronellol (41.6~46.7%), geraniol (9.7~11.0%), and nerol (3.4~4.5%).
-Citronellol peak was overlapped with nerol peak on SPB-1 and DB-624 columns, whereas the two peaks were separated each other on Supelcowax-10 column. Our results were generally consistent with Chinese data (ISO/DIS 25175); however, a peak of phenethyl alcohol separated by using PEG (Supelco wax) column was found at the quite different retention time. Comparative analysis was conducted using Bulgarian rose (Rosa damascena Miller) oil and perfume. Bulgarian rose oil showed rich amounts of characteristic aroma constituents than the essential oil of Chinese Kushui type.
Analysis of biodiesel quality based on infrared spectroscopy and multivariate statistics
Kim, Hye-Sil ; Cho, Hyun-Woo ; Liu, J. Jay ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 214~222
DOI : 10.5806/AST.2012.25.4.214
ASTM (American Society for Testing and Materials) D6751-10 suggests analytical methods as well as specifications for biodiesel quality. However, it is expensive and time-consuming to follow the ASTM testing methods to analyze biodiesel and various impurities. This paper develops a quantitative analysis system for biodiesel and impurities based on Infrared spectroscopy and a multivariate statistical method, PLS (partial least squares). In addition, four different pre-processing techniques were compared for spectrum correction and noise reduction. Savitzky-Golay pre-processing showed the best performance.
Signal compensation by the light scattering of sample aerosols in ICP-AES
Yeon, Pyung-Hum ; Pak, Yong-Nam ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 223~229
DOI : 10.5806/AST.2012.25.4.223
Analytical signal from ICP was compensated by the light scattering of sample aerosols. Reference scattering signal was generated by a He-Ne or diode laser, monitored for the amount of aerosol producing and used for the compensation of analytical signals. The result showed that significant improvement in precision could be achieved for the short-term signal (within 1 minute) from 3.4% to 0.9% RSD in signal and 14.9% to 4.2% for the long-term (10 minutes) for Be, Pb and Co. This method is very useful not only for the pulse type but for continuous type signals especially when a nebulizer is unstable. To improve long-term precision, higher stability is required in the scattering cell and detector as well as the reduction of noise from the line between a nebulizer and plasma.
The study of quantitative analysis for noxious gases of plastic materials by remote sensing open path FT-IR spectrometer
Cho, Nam-Wook ; Cho, Won-Bo ; Kim, Hyo-Jin ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 230~235
DOI : 10.5806/AST.2012.25.4.230
It is to use many plastic materials as living essential goods. But when the fire is happened, owing to noxious gases, many men should be injured. Therefore as the noxious gases are measured by open path FT-IR spectrometer as remote monitoring, the demage of men could be minimized. Such this system consists of a Fourier transform spectrometer and infrared lamp fitted to long length. The study was to do the quantitative analysis on CO,
, HCl, HF gas by remote monitoring open path FT-IR spectrometer. And the method of it should use MLR (multiple linearity regression) method. As result, It was confirmed to be more than 0.95 as
of MLR. And then Urethane and PVC of plastic materials selected was burned, the concentration of polluted gases were measured by remote monitoring method.
Determination of hazardous semi-volatile organic compounds in industrial wastewater using disk-type solid-phase extraction and GC-MS
Lee, In-Jung ; Lim, Tae-Hyo ; Heo, Seong-Nam ; Nam, Su-Gyeong ; Lee, Jae-Gwan ; Cheon, Se-Uk ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 236~241
DOI : 10.5806/AST.2012.25.4.236
There are many industrial factories in the central Nakdong river basin and have been occurred water pollution accidents by hazardous chemicals such as phenol, 1,4-dioxane and perchlorate. In this study, ten compounds of semi-volatile organic compounds (SVOCs) (dichlorvos, toluene-2,4-diisocyanate, 4,4`-methylenedianiline, 4,4`-methylenebis (2-chloroaniline), diethyl phthalate, di-n-butyl phthalate, butyl benzyl phthaltate, bis (2-ethylhexyl) adipate, benzophenone, 4,4`-bisphenol A) of hazardous chemicals which may be potentially discharged into the Nakdong river, were determined by gas chromatography-mass spectrometry (GC-MS) with disk-type solid-phase extraction. Accuracy and precision were in the range of 75.6~110.5%, and 4.6~12.7%, respectively and recovery was in the range of 72.4~127.9%. Three compounds (bis (2-ethylhexyl)adipate, benzophenone, 4,4`-bisphenol A) were detected in industrial wastewater such as wastewater treatment plants (WWTPs) and wastewater discharge facilities in the Nakdong River basin.
Study on distribution characteristics of brominated flame retardants in sediments
Kim, Tae-Seung ; Shin, Sun-Kyoung ; Oh, Jung-Keun ; Park, Jong-Eun ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 242~249
DOI : 10.5806/AST.2012.25.4.242
Total 11 samples of sediments from the Geum river and the Nakdong river and its estuaries were analyzed to investigate the distribution characteristics of PBDEs and HBCD. Concentration of PBDEs in sediments ranged from 2.19~101.34 (average 30.70, median 20.91) ng/g-dw. The concentration range of PBDEs in river sediments is greater than those of estuary sediments. The HBCD concentration was ranged from N.D.~7.85 (average 1.47, median 0.32) ng/g-dw. HBCD concentrations compared with PBDEs are approximately 1/20 level, which is associated with low domestic usage. Isomer patterns of PBDEs and HBCD suggested that not only the use of commercial products, but the physicochemical properties of these materials, environmental degradation, and environmental behavior could affect the distribution characteristics of these chemicals and their isomers.
Establishment of content criteria of marker compounds through the monitoring of Achyranthis Radix collected from Korea and China
Kim, Dae-Hyun ; Kim, Sang-Hyuk ; Jang, Yu-Seon ; Shin, Min-Chul ; Chu, Van Men ; Lee, Young-Keun ; Woo, Mi-Hee ; Kang, Jong-Seong ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 250~256
DOI : 10.5806/AST.2012.25.4.250
Two marker compounds of Achyranthis Radix, ecdysterone and inokosterone, were analyzed by HPLC on an ODS column (
) with a mobile phase of 15% acetonitrile containing 0.08% formic acid at a flow rate of 1.0 mL/min and a detection wavelength of UV 254 nm. The method was validated by ICH guideline and applied to the monitoring of marker compounds in 93 samples of Achyranthis Radix collected at various areas in Korea and China. The new content criteria of ecdysterone and inokosterone, established using linear regression method were 0.033% and 0.020%, respectively. When the new content criteria were applied to the quality control test of commercial Achyranthis Radix, 95.4% of total samples including 100% of Korean and 92.6% of Chinese samples were passed the test. Application of new content criteria could protect the Korean products and decrease the distribution of Chinese products with lower quality.
Residue analysis of penicillines in livestock and marine products
Song, Ji-Young ; Hu, Soo-Jung ; Joo, Hyun-Jin ; Kim, Mi-Ok ; Hwang, Joung-Boon ; Han, Yoon-Jung ; Kwon, Yu-Jihn ; Kang, Shin-Jung ; Cho, Dae-Hyun ;
Analytical Science and Technology, volume 25, issue 4, 2012, Pages 257~264
DOI : 10.5806/AST.2012.25.4.257
Penicillins belong to the
-lactam class of antibiotics, and are frequently used in human and veterinary medicine. Despite the positive effects of these drugs, improper use of penicillins poses a potential health risk to consumers. This study has been undertaken to determinate multi-residues of penicillins, including amoxicillin, ampicillin, oxacillin, bezylpenicillin, cloxacillin, dicloxacillin, and nafcillin, using liquid chromatographic tandem mass spectrometer (LC-MS/MS). The developed method was validated for specificity, precision, recovery, and linearity in livestock and marine products. The analytes were extracted with 80% acetonitrile and clean-up by a single reversed-phase solid-phase extraction step. Six penicillins presented recoveries higher than 76% with the exception of Amoxicillin. Relative standard deviations (RSDs) were not more than 10%. The method was applied to 225 real samples. Benzylpenicillin was detected in 12 livestock products and 7 marine products. Amoxicillin, ampicillin, cloxacilllin, dicloxacillin, nafcillin and oxacillin were not detected. The detected levels were 0.001~0.009 mg/kg in livestock products excluding eggs and milk. In marine products, the detected levels were under 0.03 mg/kg. They were under the MRL levels. As monitoring results, it is identified to be safe but it is considered that safety management of antibiotics should continue by monitoring.