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Mobile compact H-1 NMR spectrometer promises fast quality control of diesel fuel

机译:移动式紧凑型H-1 NMR光谱仪有望对柴油进行快速质量控制

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摘要

To address the need for fast quality control of diesel fuel, this study introduces a compact H-1 NMR spectrometer to develop Partial Least Squares (PLS) regression models for rapidly determining several quality parameters of diesel fuel such as specific gravity, cetane number, flash point, and distillation temperatures to 10% and 50% of recovery. For all these quality parameters, the developed models showed margins of error better or comparable than reference analytical techniques. The compact NMR spectrometer was also applied for determining biodiesel content (methyl-and ethyl esters) in diesel fuel by using a univariate calibration curve. For all tested commercial diesel fuel samples, this new tool generated comparable results, within the tolerable margin of error, to those obtained with Mid-IR as a reference technique. Operation of the compact low-field NMR spectrometer is simple and fast: no sample pre-treatment or dilution in deuterated solvents is required, and the single-scan measurements take only 15 s per spectrum. (C) 2017 Elsevier Ltd. All rights reserved.
机译:为了满足对柴油燃料进行快速质量控制的需求,本研究引入了紧凑型H-1 NMR光谱仪,以开发偏最小二乘(PLS)回归模型,以快速确定柴油的几种质量参数,例如比重,十六烷值,闪蒸蒸馏温度达到回收率的10%和50%。对于所有这些质量参数,已开发的模型显示出的误差幅度比参考分析技术更好或具有可比性。紧凑型NMR光谱仪还用于通过单变量校准曲线确定柴油中生物柴油的含量(甲基和乙基酯)。对于所有测试的商用柴油样品,该新工具在可容忍的误差范围内产生了与以中红外作为参考技术所获得的结果相当的结果。紧凑型低场NMR光谱仪的操作既简单又快速:不需要样品预处理或在氘代溶剂中稀释,并且单扫描测量每个光谱仅需15 s。 (C)2017 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Fuel》 |2017年第1期|171-178|共8页
  • 作者单位

    Univ Estadual Campinas, Inst Quim, CP 6154, BR-13084971 Campinas, SP, Brazil|Univ Estadual Londrina, BR-86051990 Londrina, Brazil;

    Rhein Westfal TH Aachen, Inst Tech Chem & Makromol Chem, Worringerweg 1, D-52074 Aachen, Germany;

    Magritek GmbH, Philipstr 8, D-52068 Aachen, Germany;

    Univ Estadual Campinas, Inst Quim, CP 6154, BR-13084971 Campinas, SP, Brazil;

    Rhein Westfal TH Aachen, Inst Tech Chem & Makromol Chem, Worringerweg 1, D-52074 Aachen, Germany;

  • 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

    Compact NMR spectroscopy; Chemometrics; PLS; Diesel fuels;

    机译:紧凑型NMR光谱;化学计量学;PLS;柴油;

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