title: Influence of oxygen content of the certain types of biodiesels on particulate oxidative potential.
abstract: 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.
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: F
authors.initials: F
authors.lastname: Hedayat
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia; ARC (Centre of Excellence for Free Radical Chemistry and Biotechnology), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia. Electronic address: s.stevanovic@qut.edu.au.
authors.forename: S
authors.initials: S
authors.lastname: Stevanovic
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Milic
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: B
authors.initials: B
authors.lastname: Miljevic
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia; BERF (Biofuel Engine Research Facility), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: M N
authors.initials: MN
authors.lastname: Nabi
authors.affiliation: BERF (Biofuel Engine Research Facility), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Zare
authors.affiliation: ARC (Centre of Excellence for Free Radical Chemistry and Biotechnology), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: S E
authors.initials: SE
authors.lastname: Bottle
authors.affiliation: BERF (Biofuel Engine Research Facility), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: R J
authors.initials: RJ
authors.lastname: Brown
authors.affiliation: ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia; BERF (Biofuel Engine Research Facility), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Ristovski
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D056804:Biofuels / Q000032:analysis*; D004784:Environmental Monitoring; D010084:Oxidation-Reduction; D010100:Oxygen / Q000032:analysis*; D052638:Particulate Matter / Q000032:analysis*; D001335:Vehicle Emissions / Q000032:analysis
chemical_list: D000393:Air Pollutants; D056804:Biofuels; D052638:Particulate Matter; D001335:Vehicle Emissions; D010100:Oxygen
keywords: BPEA-nit; DTT; Oxygenated organic aerosol; Particulate matter; ROS