Chemical characterization of size-selected nanoparticles emitted by a gasoline direct injection engine: Impact of a catalytic stripper

Duca, Dumitru and Rahman, Mostafiz and Carpentier, Yvain and Pirim, Claire and Boies, Adam and Focsa, Cristian (2021) Chemical characterization of size-selected nanoparticles emitted by a gasoline direct injection engine: Impact of a catalytic stripper. Fuel, 294. p. 120317. ISSN 0016-2361

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Abstract

This work combines laser desorption/ionization mass spectrometry (L2MS) and advanced statistical techniques to reveal the impact of a catalytic stripper (CS) on the chemical composition (at the molecular level) of a gasoline direct injection engine exhaust, and follow the evolution of size-dependent chemical characteristics over the whole particles size range (10–560 nm). The gas phase and polydisperse particles making up the exhaust are separated and sampled on distinct substrates using an original homebuilt two-filter system, while size-selected particles are collected using a cascade impactor and separated into 13 different size bins (smallest diameters 10–18 nm). We demonstrate that a fine molecular-level characterization of the exhaust particulate matter is necessary to assess the effect of the CS, especially for the smallest ultra-fine particles carrying the largest volatile fraction.

Item Type:	Article
Identification Number:	10.1016/j.fuel.2021.120317
Dates:	Date Event 24 January 2021 Accepted 8 March 2021 Published Online
Uncontrolled Keywords:	Nanoparticles, Carbonaceous aerosols, Size-selective chemical characterization, Internal combustion engine, Catalytic stripper
Subjects:	CAH00 - multidisciplinary > CAH00-00 - multidisciplinary > CAH00-00-00 - multidisciplinary CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-02 - mechanical engineering CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-10 - others in engineering
Divisions:	Faculty of Computing, Engineering and the Built Environment > College of Engineering
Depositing User:	Dr Mostafiz Rahman
Date Deposited:	05 Sep 2022 13:54
Last Modified:	20 Jun 2024 11:50
URI:	https://www.open-access.bcu.ac.uk/id/eprint/13519

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