ICARUS Chamber Experiment: Hildebrandt Ruiz Lab_20170617_ISOPRENE_Chlorine radical_Ammonium sulfate + Sulfuric acid A7 acidic seed

Goals: To calculate SOA yield from Cl-initiated photooxidation of isoprene at a VOC:Cl2 ratio of 0.98, and using acidic seed.Summary: Acidic seed was injected with an initial seed surface area of 2700 um2/cm3, followed by a Cl2 injection out of a gas cylinder, and the isoprene injection using a heated glass bulb. Temperature was kept at 25C for the whole duration of the experiment, while RH was kept at less than 10%.Organization: Hildebrandt Ruiz Lab Lab Affiliation: University of Texas at Austin, Austin, TX, USA Chamber: LHR ChamberExperiment Category: Gas phase chemical reaction, Volatility and partitioning, Aerosol formation Oxidant: Chlorine radical Reactants: ISOPRENE Reaction Type: Photooxidation Temperature: 25 Seed Name: Ammonium sulfate + Sulfuric acid

研究目标：在挥发性有机化合物（Volatile Organic Compounds, VOC）与Cl₂比例为0.98且使用酸性种子气溶胶的条件下，计算氯自由基引发的异戊二烯光氧化过程的二次有机气溶胶（Secondary Organic Aerosol, SOA）产率。实验概况：先注入初始表面积为2700 μm²/cm³的酸性种子气溶胶，随后通过钢瓶注入Cl₂，再使用加热玻璃球注入异戊二烯。实验全程维持温度为25℃，相对湿度（Relative Humidity, RH）低于10%。依托单位：美国德克萨斯大学奥斯汀分校（University of Texas at Austin）希尔德布兰特·鲁伊斯实验室（Hildebrandt Ruiz Lab）。实验腔室：LHR腔室。实验类别：气相化学反应、挥发性与分配行为、气溶胶生成。氧化剂：氯自由基。反应物：异戊二烯。反应类型：光氧化反应。实验温度：25℃。种子气溶胶名称：硫酸铵+硫酸。