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Express method for total content assessment of aromatic hydrocarbons and oxygen in finished gasolines by refractometry and densimetry

机译:折光法和密度法评估成品汽油中芳烃和氧气总量的快速方法。

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摘要

This paper presents routine refracto-densimetric indicators which may be used to identify unbalanced automobile gasoline and falsifications (surrogates). These criteria are supposed to reduce considerably the amount of testing via standard chromatographic and spectroscopic methods. Refracto-densimetric method for controlling the limiting weight content of oxygen is based on substantial difference between specific refractions of oxygenates and hydrocarbon gasoline components. Application of the refractive intercept which is additive in the volume fractions of components and constant for different homologous series of hydrocarbons allowed to establish its maximum value, the excess of which identifies a gasoline with a high content of aromatic hydrocarbons. In addition, the excess of refractive intercept of certain limit value can also indicate the possible presence of conjugated diolefins in gasoline and bicyclic arenes. (C) 2014 Elsevier Ltd. All rights reserved.
机译:本文介绍了常规折光密度仪,可用于识别不平衡的汽车汽油和伪造(替代品)。这些标准被认为可以大大减少通过标准色谱和光谱法进行的测试量。控制氧的极限重量含量的折光密度法是基于含氧化合物和烃汽油组分的比折射之间的实质差异。折射截距的应用是添加剂的组分体积分数,并且对于不同的同源碳氢化合物系列而言是常数,因此可以确定其最大值,该值超过该值可识别出芳烃含量高的汽油。另外,超过一定极限值的折射截距也可以表明在汽油和双环芳烃中可能存在共轭二烯烃。 (C)2014 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Fuel》 |2015年第15期|94-101|共8页
  • 作者单位

    Russian Acad Sci, Kazan Sci Ctr, AE Arbuzov Inst Organ & Phys Chem, Lab Chem & Petr Geochem, Kazan 420088, Russia|Kazan Natl Res Technol Univ, Dept Technol Basic Organ & Petrochem Synth, Kazan 420045, Russia;

    Kazan Natl Res Technol Univ, Dept Technol Basic Organ & Petrochem Synth, Kazan 420045, Russia;

    Cent Design Bur Photon, Dept Analyt Instruments, Kazan 420075, Russia;

    Kazan Natl Res Technol Univ, Dept Technol Basic Organ & Petrochem Synth, Kazan 420045, Russia;

  • 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

    Index of refraction; Density; Oxygenate; Cotton-Mouton effect; Adulteration;

    机译:折射率密度氧合剂棉木顿效应掺杂;

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