Influence of oxygen content of the certain types of biodiesels on particulate oxidative potential

Hedayat, Farzaneh, Stevanovic, Svetlana, Milic, Andelija, Miljevic, Branka, Nabi, Md Nurun, Zare, Ali, Bottle, Steven, Brown, Richard J., & Ristovski, Zoran D. (2016) Influence of oxygen content of the certain types of biodiesels on particulate oxidative potential. Science of the Total Environment, 545–546, pp. 381-388.

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Oxidative potential (OP) is related to the organic phase, specifically to its oxygenated organic fraction (OOA). Furthermore, the oxygen content of fuel molecules has significant influence on particulate OP. Thus, this study aimed to explore the actual dependency of the OOA and ROS to the oxygen content of the fuel. In order to reach the goal, different biodiesels blends, with various ranges of oxygen content; have been employed. The compact time of flight aerosol mass spectrometer (c-ToF AMS) enabled better identification of OOA. ROS monitored by using two assays: DTT and BPEA-nit. Despite emitting lower mass, both assays agreed that oxygen content of a biodiesel is directly correlated with its OOA, and highly related to its OP. Hence, the more oxygen included in the considered biodiesels, the higher the OP of PM emissions. This highlights the importance of taking oxygen content into account while assessing emissions from new fuel types, which is relevant from a health effects standpoint.

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ID Code: 92436
Item Type: Journal Article
Refereed: Yes
Keywords: Particulate matter, ROS, BPEA-nit, DTT, Oxygenated organic aerosol, profluorescent nitroxides, biodiesel, oxidative potential
DOI: 10.1016/j.scitotenv.2015.12.036
ISSN: 0048-9697
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Facilities: Science and Engineering Centre
Copyright Owner: Copyright 2015 Elsevier B.V.
Copyright Statement: This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Deposited On: 28 Jan 2016 23:54
Last Modified: 15 Feb 2016 18:19

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