MRI: Acquisition of a Mass Spectrometric System for Determination of Biogeochemical Fluxes Between the Atmospheric and Marine Environment

知识产权PI正在申请资金，以获得扫描迁移率粒度仪，质子转移飞行时间质谱仪（PRToFMS）和同位素比质谱仪。 这套仪器将允许PI检查海洋地球化学性质和反应机制，并允许对海洋和大气环境之间有机气体和冷凝物交换的过程进行建模。 拟议的仪器所促成的研究工作包括调查：初级海洋气溶胶的有机部分;海洋生物成因的挥发性有机化合物排放;区分海洋和陆地排放的特定化合物同位素组成;冰芯中捕获的一氧化碳同位素组成;有机气溶胶颗粒的化学转化;化学老化对冰成核的影响;这些研究包括：矿物表面的多氯联苯转化;开发将二氧化碳光催化还原为碳氢化合物的新型催化剂;沉积成岩过程和海底通量;以及在浅封闭海湾重建食物网结构。 更广泛的影响拟议的仪器将提供扩大的分析能力，为海洋和大气科学学院，以及整个斯托尼布鲁克大学和布鲁克海文国家实验室。 此外，拟议的仪器将被纳入现有的REU计划在该机构，以及进入科学和技术进入夏季住宅计划，为本科生和中学生提供实践培训机会。

Intellectual MeritThe PIs are requesting funds to acquire a scanning mobility particle sizer, a Proton Transfer Time of Flight mass spectrometer (PRToFMS), and an isotope ratio mass spectrometer. This suite of instrumentation will allow the PIs to examine biogeochemical properties and reaction mechanisms, and allow modeling of processes that govern the exchange of organic gaseous and condensed matter between the marine and atmospheric environments. Research efforts enabled by the proposed instrumentation include investigations into: the organic fraction of primary marine aerosols; marine biogenically driven volatile organic compound (VOC) emissions; compound-specific isotopic composition to differentiate between marine and terrestrial emissions; isotopic composition of carbon monoxide trapped in ice cores; chemical transformation of organic aerosol particles; effect of chemical aging on ice nucleation; polychlorinated biphenyl transformations on mineral surfaces; development of novel catalysts for photocatalytic reduction of carbon dioxide into hydrocarbons; sedimentary diagenetic processes and seabed fluxes; and reconstructing food web structure in shallow enclosed bays. Broader ImpactsThe proposed instrumentation will provide expanded analytical capability for the School of Marine and Atmospheric Sciences, as well as across Stony Brook University and Brookhaven National Laboratory. Additionally, the proposed instrumentation will be incorporated into the existing REU program at the institution, as well as into the Science and Technology Entry summer residential program, providing hands-on training opportunities for both undergraduates and secondary school students.