ILAQH (International Laboratory of Air Quality and Health), Queensland University of Technology, 2 George St, Brisbane, 4000 QLD, Australia.
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.
Sci Total Environ. 2016 Mar 1;545-546:381-8. doi: 10.1016/j.scitotenv.2015.12.036. Epub 2015 Dec 31.
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.
氧化潜力（OP）与有机相有关，特别是与其中的含氧有机部分（OOA）有关。此外，燃料分子的含氧量对颗粒物 OP 有显著影响。因此，本研究旨在探索 OOA 和 ROS 与燃料含氧量的实际关系。为了达到这一目标，使用了不同的生物柴油混合物，其含氧量范围不同。紧凑时间飞行气溶胶质谱仪（c-ToF AMS）能够更好地识别 OOA。ROS 通过使用两种测定方法进行监测：DTT 和 BPEA-nit。尽管排放量较低，但两种测定方法都表明，生物柴油的含氧量与其 OOA 直接相关，并且与 OP 高度相关。因此，在所考虑的生物柴油中包含的氧越多，PM 排放的 OP 就越高。这凸显了在评估新型燃料类型的排放物时考虑含氧量的重要性，从健康影响的角度来看，这是相关的。
