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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Application of 2D-NMR (HSQC-DEPT) Spectroscopy and Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for Separation of Crude Oil by Normal Phase HPLC

2014년 8월 27일 16시 48분 20초
ANAL.P-521 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 15일 (수요일) 16:00~19:00
저자 및
김다애, 조윤주*, 김성환*
경북대학교 화학과, Korea
Crude oil is mixture of various compounds and its complexity makes it difficult to be analyzed at a molecular level. Therefore, it is advantageous to separate crude oils into ring-type groups for understanding details about crude oil sample. For this reason, the separation of crude oil is regarded as important part in petroleum industry. Compounds in crude oils were separated into five different groups (saturates and 1-ring, 2-rings, 3rings, 4-rings and polar compounds) according to aromatic ring number. Normal phase HPLC, two six port valves and two columns (PAC column and DNAP column) were used for separation. Five different groups were collected by using fraction collector and these samples were purged and dried using nitrogen. After this step, oil samples were further characterized by 2D NMR and 15T FT-ICR MS coupled to atmospheric pressure photo ionization (APPI). Carbon number and DBE distribution plots generated from FT-ICR MS data showed that ring type separation was successfully performed. The conclusion was further confirmed by application of NMR. Generally, NMR could determining molecular structure when analyzing complicate and large sample. In this characterization step, we used Heteronuclear single-quantum correlation spectroscopy (HSQC)-DEPT which is one of 2D NMR methods. Additionally, 1H-13C HSQC-DEPT spectra agrees with the FT-ICR MS data very well.