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首页> 外文期刊>Fuel >Molecular-level characterization of crude oil compounds combining reversed-phase high-performance liquid chromatography with off-line high-resolution mass spectrometry
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Molecular-level characterization of crude oil compounds combining reversed-phase high-performance liquid chromatography with off-line high-resolution mass spectrometry

机译：反相高效液相色谱与离线高分辨率质谱联用对原油化合物的分子水平表征

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摘要

A reversed-phase separation technique was developed in a previous study (Loegel et al., 2012) and successfully applied to the de-asphalted fraction of crude oil. However, to the best of our knowledge, the molecular-level characterization of oil fractions obtained by reversed-phase high-performance liquid chromatography (HPLC) coupled with high-resolution mass spectrometry (MS) has not yet been reported. A detailed characterization of the oil fractions prepared by reversed-phase HPLC was performed in this study. HPLC fractionation was carried out on conventional crude oil and an oil shale pyrolysate. The analyses of the fractions showed that the carbon number of alkyl chains and the double bond equivalent (DBE) value were the major factors determining elution order. The compounds with larger DBE (presumably more condensed aromatic structures) and smaller carbon number (presumably compounds with short side chains) were eluted earlier but those compounds with lower DBE values (presumably less aromatic structures) and higher carbon number (presumably compounds with longer alkyl chains) eluted later in the chromatograms. This separation behavior is in good agreement with that expected from the principles of reversed-phase separation. The data presented in this study show that reversed-phase chromatography is effective in separating crude oil compounds and can be combined with ultrahigh-resolution MS data to better understand natural oils and oil shale pyrolysates.
机译：先前的研究（Loegel等，2012）开发了一种反相分离技术，并将其成功地应用于原油的脱沥青馏分中。然而，据我们所知，尚未报道通过反相高效液相色谱（HPLC）结合高分辨率质谱（MS）获得的油馏分的分子水平表征。在这项研究中，对通过反相HPLC制备的油馏分进行了详细的表征。 HPLC分馏在常规原油和油页岩热解产物上进行。馏分的分析表明，烷基链的碳原子数和双键当量（DBE）值是决定洗脱顺序的主要因素。具有较大DBE（大概是更稠合的芳族结构）和较小碳原子数（可能是具有短侧链的化合物）的化合物被较早地洗脱，但是那些具有较低DBE值（大概具有较少的芳族结构）和较高碳原子数的化合物（可能是具有更长烷基的化合物）链）稍后在色谱图中洗脱。该分离行为与反相分离原理所预期的行为良好一致。本研究中提供的数据表明，反相色谱法可有效分离原油化合物，并可与超高分辨率MS数据结合使用，以更好地了解天然油和油页岩热解产物。

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  • 来源
    《Fuel》 |2015年第15期|717-723|共7页
  • 作者

    Arum Sim; Yunju Cho; Daae Kim; Matthias Witt; Justin E. Birdwell; Byung Ju Kim; Sunghwan Kim;

  • 作者单位

    Kyungpook National University, Department of Chemistry, Daegu, Republic of Korea;

    Kyungpook National University, Department of Chemistry, Daegu, Republic of Korea;

    Kyungpook National University, Department of Chemistry, Daegu, Republic of Korea;

    Bruker Daltonik GmbH, Bremen, Germany;

    United States Geological Survey, Denver Federal Center, Post Office Box 25046, MS 977, Denver, CO 80225, United States;

    Division of Organic Analysis, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea;

    Kyungpook National University, Department of Chemistry, Daegu, Republic of Korea,Green-Nano Materials Research Center, Daegu, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    HPLC; Reverse phase; High resolution mass spectrometry; APPI; Petroleomics;

    机译：HPLC;反相;高分辨率质谱;APPI;石油经济学;

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