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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Improved detection of polycyclic aromatic compounds in complex mixtures by liquid chromatographic fractionation on poly(divinylbenzene) prior to gas chromatography-mass spectrometry Application to the analysis of diesel particulates
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Improved detection of polycyclic aromatic compounds in complex mixtures by liquid chromatographic fractionation on poly(divinylbenzene) prior to gas chromatography-mass spectrometry Application to the analysis of diesel particulates

机译：气相色谱-质谱联用之前在聚二乙烯基苯上进行液相色谱分馏，改善了复杂混合物中多环芳烃化合物的检测方法在柴油颗粒分析中的应用

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摘要

Polycyclic aromatic compounds (PACs) are preferentially retained over other compound classes during high-performance liquid chromatography (HPLC) on poly(divinylbenzene) (PDVB) columns with a dichloromethane mobile phase. PAC retention during HPLC with PDVB/CH_2CI_2 is governed by a multi-mode mechanism that has been previously described. This enhanced retention of PACs makes PDVB columns useful for isolating a PAC fraction from highly complex mixtures such as the emissions from fossil-fuels combustion. The cleaned-up PAC fraction yields a simple chromatogram with easily identified and quantified peaks without significant compound loss or danger of contamination. We illustrate the use of this clean-up method for the isolation of the PAC fraction from a standard reference diesel paniculate sample.
机译：在具有二氯甲烷流动相的聚（二乙烯基苯）（PDVB）色谱柱上进行高效液相色谱（HPLC）时，与其他化合物相比，多环芳族化合物优先保留。用PDVB / CH_2CI_2进行HPLC期间PAC的保留是由先前描述的多模式机制控制的。增强的PAC保留能力使PDVB色谱柱可用于从高度复杂的混合物（例如化石燃料燃烧产生的排放）中分离PAC馏分。纯化后的PAC馏分可得到简单的色谱图，具有易于识别和定量的峰，而没有明显的化合物损失或污染的危险。我们举例说明了这种净化方法从标准参比柴油颗粒样品中分离出PAC级分的方法。

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