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- 저자 : 오도석 ( Oh Doe Seok ) (검색결과 2 건)
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GCOTC에 의한 알코올류 분리를 위한 시스템 적합성에 관한 연구
오도석 ( Oh Doe Seok ),김성화 ( Kim Sung Hwa ),이슬 ( Lee Seul ),최재구 ( Choi Jae Gu ) 한국산업보건학회 (구 한국산업위생학회) 2017 한국산업보건학회지 Vol.27 No.2
Objectives: The purpose of this study is to enhance the application of analytical method of polar solvents(alcohols) by GCOTC (gas chromatography open tubular column) through the system suitability test(SST) to estimate the whole chromatographic system performance(integral part). Methods: To perform the SST, carried out repeatability(n=6) as analytical method of polar solvents by GCOTC, got the retention time(t<sub>R</sub>), standard deviation(σ<sub>n-1</sub>) of t<sub>R</sub>, baseline width(w<sub>b</sub>=4σ<sub>n-1</sub>) and calculated dead time(t<sub>m</sub>) by v<sub>m</sub>=d<sup>2</sup>πL(f/4) and v<sub>m</sub>=t<sub>m</sub> x flow rate. Results: In this experiment, obtained the basic data, there were t<sub>m</sub>=2 min, methanol(t<sub>R</sub>=3.569, σ<sub>n-1</sub>=0.01, w<sub>b</sub>=0.04), ethanol (t<sub>R</sub>=3.892, σ<sub>n-1</sub>=0.004, w<sub>b</sub>=0.016), isopropanol(t<sub>R</sub>=4.209, σ<sub>n-1</sub>=0.004, w<sub>b</sub>=0.016). By using these data, calculated the corrected retention time(t<sub>R</sub>`), capacity factor(k), separation factor(α), number of theoretical plate(n) and resolution(R<sub>s</sub>) for SST and got the good results. Conclusions: Through the SST, could reconfirm the whole chromatographic performance system(integral part) for analytical method of polar solvents by GCOTC. Therefore, this analytical method expect to be widely applied at the related areas.
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오도석 ( Doe Seok Oh ),김성화 ( Sung Hwa Kim ),이슬 ( Seul Lee ),황경철 ( Kyung Chul Hwang ) 한국산업보건학회 2016 한국산업보건학회지 Vol.26 No.1
Objectives: The purpose of this study is to simplify and standardize analytical method of polar solvents(methanol, isopropanol, n-butanol, acetone, methylene chloride and MIBK) in the working environmental by GC. Because NIOSH methods are various and complicated. Methods: The method is using the same stationary phase(5% phenyl 95% dimethylpolysiloxane), absorbent(silica gel) and desorption solvent(DMSO) for above 6 solvents. For the 6 solvents desorption efficiency, calibration curve, and limit of detection were studied Results: As the results, 6 solvents{2 groups ; first group(methanol/isopropanol/butanol) and second group(acetone/methylene chloride/MIBK)} could be separated and quantified within 10 minutes. Desorption efficiency from silica gell of 6 solvents using dimethylsulfoxide(DMSO) was methanol 86.2%, isopropanol 103.2%, n-butanol 101.8%, acetone 98.2%, methylene chloride 103.9% and MIBK 106.2% in the range of 0.2, 0.5, 2.0 times of TWA, consequently, satisfied NIOSH estimation level(beyond 75%). Correlation coefficient(r)in the range of 0.2~2.0 times of TWA, was above 0.999 for 6 solvent . LOD(mg/DMSO ml) using calibration curve in the range of 0.2~2 times of TWA was methanol 0.11, isopropyl alcohol 0.20, n-butanol 0.03, acetone 0.50, methylene chloride 0.05, MIBK 0.04 respectably. Conclusions: This method can be used at the sampling and analytical method for polar solvents by GC. Also, will be able to be applied with NIOSH methods.
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