Cloud Chamber Study of SO2 Oxidation by Combustion Products

本项目的目的是进行云室研究， 通过燃烧产物的非均相SO氧化。 拟议 2 实验试图回答以下问题：（1）如何 燃烧条件影响异相SO氧化？ (2)如何 2 火焰中的颗粒表面的化学改性， 火焰后区域影响它们的云形核特性？(3)如何 水蒸气的相变对SO在室温下的氧化有影响， 2 低于冰点的温度？ 这些问题将在一系列 用实验云室做实验 端口当室联接到 燃烧室，它是云核粒子的来源， 微粒和气态物质。 该腔室可在宽范围内操作， 温度范围，使收集云水间隙， 用于化学分析和实时分析的总（云+间隙）气溶胶 烟尘含量、云和间隙气溶胶的测量

The objective of this project is to perform cloud chamber studies of heterogeneous SO oxidation by combustion products. The proposed 2 experiments seek to provide answers to the following questions: (1) How do combustion conditions influence heterogeneous SO oxidation? (2) How 2 does the chemical modification of particle surfaces in the flame and postflame region influence their cloud nucleation properties? (3) How does phase change of water vapor influence SO oxidation at room and 2 subfreezing temperatures? These questions will be answered in a series of experiments with an experimental cloud chamber. The chamber is coupled to a combustor, which is a source of cloud nucleation particles and reactive particulate and gaseous species. The chamber can be operated in a wide temperature range and enables collection of cloud water interstitial and total (cloud + interstitial) aerosol for chemical analysis and real-time measurement of soot content and cloud and interstitial aerosol