MRI: Acquisition of Two High-Resolution Mass Spectrometers for Gas and Particle Measurements in Collaborative Laboratory Research and Field Studies

MRI：购买两台高分辨率质谱仪，用于实验室协作研究和现场研究中的气体和粒子测量

• 批准号: 0923323
• 负责人: Sergey Nizkorodov
• 金额: $ 68.07万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0923323&HistoricalAwards=false
• 关键词: MRI; Acquisition; Two; Resolution; Mass

This project supports acquisition of two different state-of-the-art high-resolution mass-spectrometers designed for sensitive, real-time analysis of trace gases and airborne particles. They will be used for both field and laboratory applications. The equipment will be used for multiple studies concerning the role of halogens and organics in secondary organic aerosol formation, climate change and urban air pollution. Multiple other applications are foreseen, including using the instruments to better identify the effect of indoor and outdoor aerosols on human respiratory health and how pollutants interact with biological systems. The first instrument is a high-resolution proton-transfer time-of-flight mass spectrometer (PTR-TOF-MS) from Ionicon Analytik designed for gas-phase constituents. The second is a high resolution time-of-flight aerosol mass spectrometer (TOF-AMS) from Aerodyne Research designed for aerosol particles. These instruments will become a multi-user resource for a large number of researchers from AirUCI, a recently established organized research unit at the University of California at Irvine which focuses on use, air quality, and impacts of air pollutants. Intellectual Merit. The acquisition and application of this instrumentation will significantly advance our understanding of atmospheric sources and reactions of air pollutants and atmospheric compounds produced through biological processes, their impacts and how they are affected by new technologies. This equipment will enable significant advances in understanding the role of trace gases, particularly halogen-containing species and oxygenated organics, in the oxidative capacity of the atmosphere and in secondary organic aerosol formation. The studies have direct applications to climate change and urban air pollution. Experiments using the equipment should reveal previously unrecognized pathways for the formation, fate and impacts of heterogeneous chemical reactions in the atmosphere. Results will also be important in assessing the impacts of new energy technologies on these processes. Broader Impacts. The results produced using the acquired instrumentation will be disseminated through research meetings, peer-reviewed publications, the Internet, and public media sources. These data are critical for developing cost-effective control strategies for local and regional air pollution to climate change. This research will also provide training to at least 75 graduate students and postdoctoral fellows as well as a number of undergraduates over the next five years in cutting edge instrumentation and its application to important atmospheric problems. Historically, trainees have come largely from underrepresented groups in science and it is anticipated that this will continue to be the case. In addition, this instrumentation will be used to introduce K-12 teachers to the current state of knowledge and fundamental science behind air pollution and climate change, and to illustrate these to the public as well. Postdoctoral Mentoring. AirUCI faculty have a strong postdoctoral mentoring program in place that not only provides state-of-the-art research training but also improves communications skills through the presentation of their research at regular intervals to the institute as a whole, at annual workshops and at professional meetings such as AGU. In addition, they interact with 7-12 teachers and the public through the AirUCI outreach programs. Confirmation of the success of past mentoring efforts is found in the placement of their postdoctoral fellows in faculty positions in both research and primarily undergraduate universities, in state and federal government agencies (EPA, California Air Resources Board), and industry.

该项目支持采购两种不同的最先进的高分辨率质谱仪，用于对痕量气体和空气中的颗粒进行灵敏的实时分析。 它们将用于现场和实验室应用。 该设备将用于有关卤素和有机物在二次有机气溶胶形成、气候变化和城市空气污染中的作用的多项研究。 预计还有多种其他应用，包括使用这些仪器更好地确定室内和室外气溶胶对人类呼吸系统健康的影响以及污染物如何与生物系统相互作用。 第一台仪器是来自Ionicon Analytik的高分辨率质子转移飞行时间质谱仪（PTR-TOF-MS），专为气相成分设计。 第二个是来自Aerodyne Research的高分辨率飞行时间气溶胶质谱仪（TOF-AMS），专为气溶胶颗粒设计。 这些仪器将成为来自AirUCI的大量研究人员的多用户资源，AirUCI是加州大学欧文分校最近成立的一个有组织的研究单位，专注于使用，空气质量和空气污染物的影响。智力优势。 这种仪器的获得和应用将大大提高我们对大气来源和通过生物过程产生的空气污染物和大气化合物的反应、其影响以及新技术如何影响它们的理解。 这一设备将使我们能够在理解痕量气体，特别是含卤素物质和含氧有机物在大气氧化能力和二次有机气溶胶形成中的作用方面取得重大进展。 这些研究直接应用于气候变化和城市空气污染。 利用该设备进行的实验应能揭示以前未被认识到的大气中多相化学反应的形成、归宿和影响的途径。 在评估新能源技术对这些进程的影响方面，结果也很重要。更广泛的影响。 使用所获得的仪器得出的结果将通过研究会议、同行审查的出版物、互联网和公共媒体来源传播。 这些数据对于制定具有成本效益的控制战略，以控制当地和区域的空气污染和气候变化至关重要。 这项研究还将在未来五年内为至少75名研究生和博士后研究员以及一些本科生提供尖端仪器及其在重要大气问题中的应用方面的培训。 从历史上看，受训人员主要来自科学界代表性不足的群体，预计情况将继续如此。 此外，该仪器将用于向K-12教师介绍空气污染和气候变化背后的知识和基础科学的现状，并向公众说明这些情况。博士后导师。 AirUCI教师有一个强大的博士后指导计划，不仅提供最先进的研究培训，而且通过定期向整个研究所，年度研讨会和专业会议（如AGU）介绍他们的研究来提高沟通技能。 此外，他们通过AirUCI外展计划与7-12名教师和公众互动。 过去的指导工作的成功的确认被发现在他们的博士后研究员在教师职位的研究和主要是本科大学，在州和联邦政府机构（环保署，加州空气资源委员会）和行业的安置。