CAREER: Developing Cavity Ring-Down Spectroscopy for Laboratory Photochemistry Experiments and Atmospheric Chemical Measurements

职业：开发用于实验室光化学实验和大气化学测量的光腔衰荡光谱

• 批准号: 0094038
• 负责人: William Simpson
• 金额: $ 48.85万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-01 至 2007-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0094038&HistoricalAwards=false
• 关键词: CAREER; Developing; Cavity; Ring; Down

Professor William Simpson of the University of Alaska is funded by the Experimental Physical Chemistry and Atmospheric Chemistry programs to perform experimental laboratory and field studies using the ultrasensitive method, cavity ring down spectroscopy (CRDS). This CAREER proposal seeks to combine instrument development aspects with educational aspects, with the goal of introducing sensitive methods for atmospheric field study of the Alaskan troposphere. Oxidation by nitrates, profiles of methane using near-IR CRDS and photochemistry of organic nitrates are the topics of interest. The PI has a joint appointment at the Geophysical Institute and the Chemistry Department at the University of Alaska. Instrument development for ultrasensitive atmospheric measurements is needed as our understanding of the atmosphere is refined. This information is required for accurate modeling and prediction of global climate changes. Methods such as cavity ring down spectroscopy, developed within the physical chemistry program, should be exploited to the maximum extent possible for these applications. However, further work is needed to understand the limits of these methods in terms of spectral congestion, interferences, etc. Professor Simpson's educational efforts include outreach to Native American students in the Fairbanks area. His education plan incorporates the development of visual exercises for physical chemistry laboratory classes.

阿拉斯加大学的 William Simpson 教授在实验物理化学和大气化学项目的资助下，使用超灵敏方法、腔衰荡光谱 (CRDS) 进行实验实验室和现场研究。 该职业提案旨在将仪器开发方面与教育方面结合起来，目标是引入用于阿拉斯加对流层大气现场研究的敏感方法。 硝酸盐的氧化、使用近红外 CRDS 的甲烷剖面以及有机硝酸盐的光化学是感兴趣的主题。 PI 在阿拉斯加大学地球物理研究所和化学系联合任职。 随着我们对大气的了解不断加深，需要开发用于超灵敏大气测量的仪器。 全球气候变化的准确建模和预测需要这些信息。 在物理化学项目中开发的诸如空腔衰荡光谱之类的方法应该最大限度地用于这些应用。 然而，需要进一步的工作来了解这些方法在频谱拥塞、干扰等方面的局限性。辛普森教授的教育工作包括向费尔班克斯地区的美国原住民学生进行推广。 他的教育计划包括开发物理化学实验室课程的视觉练习。