Aerodyne Research, Inc., Billerica, Massachusetts 01821, United States.
Environ Sci Technol. 2010 Dec 15;44(24):9530-4. doi: 10.1021/es102145z. Epub 2010 Nov 19.
In this first ever study, particulate matter (PM) emitted from the lubrication system overboard breather vent for two different models of aircraft engines has been systematically characterized. Lubrication oil was confirmed as the predominant component of the emitted particulate matter based upon the characteristic mass spectrum of the pure oil. Total particulate mass and size distributions of the emitted oil are also investigated by several high-sensitivity aerosol characterization instruments. The emission index (EI) of lubrication oil at engine idle is in the range of 2-12 mg kg(-1) and increases with engine power. The chemical composition of the oil droplets is essentially independent of engine thrust, suggesting that engine oil does not undergo thermally driven chemical transformations during the ∼4 h test window. Volumetric mean diameter is around 250-350 nm for all engine power conditions with a slight power dependence.
在这项首次研究中，对两种不同型号飞机发动机的润滑油系统通舱呼吸口排放的颗粒物（PM）进行了系统的特性描述。基于纯油的特征质谱，确认润滑油是排放颗粒物的主要成分。通过几种高灵敏度气溶胶特性仪器，还研究了排放油的总颗粒物质量和粒径分布。发动机怠速时的润滑油排放指数（EI）在 2-12mgkg(-1)范围内，并随发动机功率增加而增加。油滴的化学成分基本与发动机推力无关，这表明发动机油在约 4 小时的测试窗口内没有经历热驱动的化学转化。在所有发动机功率条件下，体积平均直径约为 250-350nm，略有功率依赖性。
