Real-Time Characterization of the Organic Composition and Size of Individual Diesel Engine Smoke Particles

Autor:	William B. Whitten, R.A. Gieray, John Michael Ramsey, Peter T. A. Reilly
Rok vydání:	1998
Předmět:	Smoke Diesel fuel Chemistry Environmental chemistry Particle-size distribution Analytical chemistry Environmental Chemistry Particle Exhaust gas General Chemistry Particle size Diesel engine Combustion
Zdroj:	Environmental Science & Technology. 32:2672-2679
ISSN:	1520-5851 0013-936X
DOI:	10.1021/es980135t
Popis:	Real-time analysis of individual diesel engine exhaust particles was demonstrated using an ion trap mass spectrometer. Measurements were made on the nebulized engine oil and diesel fuel for comparison with the exhaust particle analysis. Studies were performed on individual exhaust particles to determine composition as a function of aerodynamic size. MS/MS analysis positively identified low-mass PAHs as well as indicated the presence of high mass hydrogenated PAHs (HPAHs). The degree of PAH hydrogenation was found to be mass dependent. The origin of the HPAHs seems to be the diesel fuel. However, the HPAHs underwent some degree of oxidation during the combustion process on average. Indicators were found that might be used to determine combustion efficiency. The capability of the technique for on-line measurement of combustion processes was demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::20f5c9bc4370339a7734e365e279c304 https://doi.org/10.1021/es980135t Zobrazit plný text záznamu