Cloud Chamber Study of SO2 Oxidation by Combustion Products

燃烧产物氧化 SO2 的云室研究

• 批准号: 8713712
• 负责人: Tihomir Novakov
• 金额: $ 25.08万
• 依托单位: Lawrence Berkeley Laboratory
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1989-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713712&HistoricalAwards=false
• 关键词: Cloud; Chamber; Study; SO2; Oxidation

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

本项目的目的是对燃烧产物的非均相SO氧化进行云室研究。提出的两个实验旨在回答以下问题：(1)燃烧条件如何影响非均相SO氧化？(2)粒子表面在火焰和火焰后区域的化学修饰如何影响其云成核性能？(3)常温和低温下水蒸气的相变如何影响SO氧化？这些问题将在实验云室的一系列实验中得到解答。燃烧室与燃烧室耦合，燃烧室是云成核颗粒和反应性颗粒和气态物质的来源。该室可在较宽的温度范围内工作，并可收集云水间隙和总（云+间隙）气溶胶，用于化学分析和实时测量烟尘含量以及云和间隙气溶胶