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- W2349275637 abstract "It is difficult to analyze polycyclic aromatic hydrocarbons(PAHs) in particulate matter(PM) from diesel engine due to two reasons.One is the difficulty to completely extract PAHs due to carbon surrounding them,another is a large part of soluble organic fraction(SOF) in diesel PM emissions.In this paper,solvent and ultrasonic extraction methods were used to distill the SOF from PM emissions in state stage 3 and 4 diesel engines.By optimization of gas chromatography mass spectrometry equipment in-line sampling methods,ion source and chromatography temperature,a method which could analyse 16 kinds polycyclic aromatic hydrocarbons in diesel particulate matter was set up through utilization of full-scan mode for qualitative analysis and selected ion scan mode for quantitative analysis.The result showed that SOF fraction of PM emission in stage 4 diesel engine is lower than that of stage 3 engine under ESC test.The volume concentration of 16 PAHs in stage 4 engine is 10%-30% of stage 3 diesel engine.Under ETC test,the percent of PAHs is 14%-22%.There is little difference for PAHs emission between different emission control strategies for diesel engines under comparable emission level at the same operating condition.Total PAHs emission concentrations of stage 3 and 4 diesel engines under ETC test are 2 or 3 times to that of ESC test." @default.
- W2349275637 created "2016-06-24" @default.
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- W2349275637 date "2009-01-01" @default.
- W2349275637 modified "2023-09-22" @default.
- W2349275637 title "Analysis of PAHs in Particulate Matter of a Diesel Engine by Gas Chromatography-Mass Spectrometry" @default.
- W2349275637 hasPublicationYear "2009" @default.
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