RUI: Solid/Liquid Phase Diagrams of Stratospheric and Upper Tropospheric Importance

RUI：平流层和对流层上层重要性的固相/液相图

• 批准号: 9911451
• 负责人: Keith Beyer
• 金额: $ 13.43万
• 依托单位: Wisconsin Lutheran College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-15 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9911451&HistoricalAwards=false
• 关键词: RUI; Solid; Liquid; Phase; Diagrams

This RUI project is an investigation of the thermodynamics of polar stratospheric clouds (PSC's). There is strong evidence that PSC's play an important role in the annual depletion of stratospheric ozone at the poles. The chemical activity of PSC particles changes as a function of their physical state (solid or liquid) and their chemical composition. This research project will investigate the solid/liquid phase diagrams of aqueous chemical systems that make up PSC's using differential scanning calorimetry and infrared spectroscopy. The systems to be investigated include the nitric acid/water binary system and the nitric acid/sulfuric acid/water ternary system. The results will have implications for understanding and modeling heterogeneous reactions that affect stratospheric ozone.

这个RUI项目是对极地平流层云（PSC）热力学的研究。 有强有力的证据表明，PSC在极地平流层臭氧的年度消耗中发挥着重要作用。 PSC颗粒的化学活性随其物理状态（固体或液体）和化学组成而变化。 本研究计画将利用差示扫描量热法及红外线光谱法，探讨组成PSC的水化学系统的固/液相相图。 所研究的体系包括硝酸/水二元体系和硝酸/硫酸/水三元体系。 这些结果将对理解和模拟影响平流层臭氧的非均相反应产生影响。