Primary aerosol emissions from wood combustion and shipping engines and their potentials for formation of secondary aerosols.

木材燃烧和船舶排放是造成严重健康和环境影响的初级和次级有机气溶胶（POA和SOA）的两个鲜为人知的来源。气体/粒子相互作用及其对粒子组成的影响将使用一套全面的在线和离线分析技术进行研究。重要目标包括一次有机气溶胶和二次有机气溶胶的定量和化学表征，通过测量活性氧（ROS）来估计健康影响，以及评估单个有机标记物的稳定性。由于深海航行排放的研究才刚刚开始，直接颗粒排放的物理化学性质的测量本身就有价值，而移动雾霾室的控制老化实验则是全新的。对于木材燃烧实验，目的是定量表征在冬季家用木材燃烧相关条件下产生的总气溶胶。以前的木材燃烧研究没有在较低的温度（即~0°C）下进行，预计这将影响SOA的形成、SOA和POA的分配以及ROS等组件的老化过程。在这些温度下的实验，由移动烟雾室实现，将导致更现实的结果，这对于准确描述影响有机分子的重要分配效应至关重要。

Wood burning and shipping emissions represent two poorly understood sources of primary and secondary organic aerosol (POA and SOA) responsible for serious health and environmental effects. The gas/particle interactions and their effect on particle composition will be studied using a comprehensive set of on-line and off-line analytical techniques. Important aims include the quantification and chemical characterization of primary organic aerosols and secondary organic aerosols, estimation of health effects via measurement of reactive oxygen species (ROS), and assessment of the stability of individual organic markers. As research on emissions form deep-sea navigation is only just beginning, measurement of the physicochemical properties of the direct particle emissions are value of themselves, while the controlled aging experiments in a mobile smog chamber are completely new. For the wood combustion experiments, the purpose is the quantitative characterization of the total aerosol produced under conditions relevant for wintertime domestic wood combustion. Previous wood combustion studies have not been conducted at lower temperatures (i.e. ~0 °C), which is expected to influence SOA formation, portioning of SOA and POA, and the ageing processes of components such as ROS. Experiments at these temperatures, enabled by the mobile smog chamber, will lead to more realistic results that are crucial for accurate description of the important partitioning effects affecting organic molecules.