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HPLC analysis of aldehydes in automobile exhaust gas: Comparison of exhaust odor and irritation in different types of gasoline and diesel engines

机译:HPLC分析汽车尾气中的醛类:比较不同类型的汽油和柴油发动机的排气气味和刺激性

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摘要

This study investigated high performance liquid chromatography (HPLC) to identify and measure aldehydes from automobile exhaust gas. Four aldehydes: formaldehyde (HCHO), acetaldehyde (CH_3CHO), acrolein (H_2C=CHCHO) and propionaldehyde (CH_3CH_2CHO) and one ketone, acetone (CH_3)_2CO are separated. The other higher aldehydes in exhaust gas are very small and cannot be separated. A new method of gas sampling, hereafter called bag sampling in HPLC is introduced instead of the trapping gas sampling method. The superiority of the bag sampling method is its transient gas checking capability. In the second part of this study, HPLC results are applied to compare exhaust odor and irritation of exhaust gases in different types of gasoline and diesel engines. Exhaust odor, irritation and aldehydes are found worst in direct injection (DI) diesel engines and best in some good multi-point injection (MPI) gasoline and direct injection gasoline (DIG) engines. Indirect injection (IDI) diesel engines showed odor, irritation and aldehydes in between the levels of MPI gasoline, DIG and DI diesel engines.
机译:这项研究调查了高效液相色谱(HPLC),以识别和测量汽车尾气中的醛。分离出四种醛:甲醛(HCHO),乙醛(CH_3CHO),丙烯醛(H_2C = CHCHO)和丙醛(CH_3CH_2CHO)和一种酮,丙酮(CH_3)_2CO。废气中的其他高级醛非常小,无法分离。介绍了一种新的气体采样方法,以下称为HPLC中的袋采样法,而不是捕集气体采样法。袋采样方法的优势在于其瞬态气体检查能力。在本研究的第二部分中,HPLC结果用于比较不同类型的汽油和柴油发动机的废气气味和废气刺激性。排气气味,刺激性和醛类在直喷(DI)柴油发动机中发现最差,在某些良好的多点喷射(MPI)汽油和直喷汽油(DIG)发动机中发现最好。间接喷射(IDI)柴油发动机在MPI汽油,DIG和DI柴油发动机之间显示出异味,刺激性和醛类。

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