MRI: Acquisition of an Ultrahigh Resolution Mass Spectrometer for Interdisciplinary Research and Education

具有超高质量分辨率和极高灵敏度的质谱仪器特别适合分析复杂的环境样品，例如在大气气溶胶中的有机混合物中发现的样品，以及一系列天然水和水成物。该提案寻求获得并委托一台超高质量分辨率的Thermo Orbitrap Elite质谱仪，其高质量分辨率有助于更准确地测定分子量，并与二维液相色谱相结合，以帮助分离类似化合物的混合物。分子特征和复杂混合物中分子的相对数量最初将用于进一步了解：(1)大气气溶胶过程（例如，云循环和老化）和特性（例如，吸湿性和挥发性）；(2)碳循环对生物群和气候变化的响应；和其他应用如：(3)多相反应室工作；先进的分析仪器也大大扩大了学生、博士后和下一代研究人员/教师的研究机会和训练机会。

Mass spectrometry instruments with ultrahigh mass resolution and extreme sensitivity are especially well suited for the analysis of complex environmental samples, such as found in the organic mixtures in atmospheric aerosols, and a range of natural waters and hydrometeors. The proposal seeks to acquire and commission an ultrahigh mass resolution Thermo Orbitrap Elite MS, with high mass resolution aiding in more accurate molecular weight determination, and interfaced with 2-D liquid chromatography to aid in separation in mixtures of like compounds. Molecular signatures and relative quantities of molecules in complex mixtures will be used initially to further our understanding of: (1) atmospheric aerosol processes (e.g., cloud cycling and aging) and properties (e.g., hygroscopicity and volatility); (2) carbon cycling responses to changes in biota and climate; and additional applications such as: (3) multiphase reaction chamber work; (4) fate of organic contaminants during water treatmentAdvanced analytical instrumentation also significantly expands the research opportunities and training exercises for students, postdocs and the next generation of researchers/teachers.