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

FUEL

卷:203

Article

Killner, M. H. M.^1,2  Danieli, E.³  Casanova, F.⁴  Rohwedder, J. J. R.¹  Bluemich, B.³ 

[1] Univ Estadual Campinas, Inst Quim, CP 6154, BR-13084971 Campinas, SP, Brazil

[2] Univ Estadual Londrina, BR-86051990 Londrina, Brazil

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

[4] Magritek GmbH, Philipstr 8, D-52068 Aachen, Germany

关键词: Compact NMR spectroscopy;    Chemometrics;    PLS;    Diesel fuels;   

DOI  :  10.1016/j.fuel.2017.04.081

来源: Elsevier

【 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.

【 授权许可】

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