Research Technician Support

0091771 Derry该基金为康奈尔大学地球与大气科学系的热电离质谱和电感耦合等离子体质谱设施的运行提供技术支持。 NSF的资金和康奈尔大学的资金将用于支持实验室经理琳达戈弗雷博士的工资。 戈弗雷博士主要负责监督仪器和相关洁净实验室设施的操作和维护。目前采用的分析技术包括利用TIMS进行的锶、钕和铅同位素分析，以及利用ICP-MS进行的各种微量元素分析，包括氢化物发生。 除了支持一系列由NSF和其他来源资助的正在进行的项目外，戈弗雷博士还将改进或开发用于铅同位素分析的新型高分辨率磁性部门ICP-MS的分析方案（目前的应用包括追踪土壤中Pb的人为和气溶胶输入），Ca同位素稀释分析（目前的应用包括追踪怀孕哺乳动物胎盘中的钙转移）和铀同位素分析（目前的应用包括了解土壤中铀的风化过程和质量平衡）。目前将获得资助的研究项目包括：1）应用微量元素和Sr、Nd和Pb同位素数据描绘大气（包括人为）与风化对夏威夷生态系统的输入; 2）尼泊尔中央冲断层沿线地热和河水的化学和同位素研究，研究地热循环在从构造活动地壳提取热量和挥发物方面的作用及其对水流通量的影响; 3）利用Ge/Si比值估算全球海洋中SiO2气溶胶通量，4）Ge/Si比值作为风化通量和植物-土壤相互作用的示踪剂，5）巴塔哥尼亚与俯冲有关的火山作用的Sr、Nd和Pb同位素数据; 6）古木材中微量元素的分布作为地中海东部火山爆发年代学的一个指标; 7）泥炭地土壤中金属（Cu、Zn、Ag）的归宿和迁移; 8）热带土壤中溶解铝的形态和行为。9)早期成岩作用期间硅酸盐相的自生作用; 10）同位素（Sr，Nd，Pb）对羽状火山作用来源的限制，加拉帕戈斯热点。*

0091771DerryThis grant provides technical support for operations of the thermal ionization mass spectrometry and inductively coupled plasma mass spectrometry facilities in the Department of Earth and atmospheric sciences, Cornell University. NSF funds and Cornell University funds will be used to support the salary of Dr. Linda Godfrey, laboratory manager. Dr. Godfrey has the primary responsibility for overseeing the operation and maintenance of the instrumentation and associated clean laboratory facilities. Currently implemented analytical techniques include strontium, neodymium and lead isotope analysis by TIMS, and a variety of trace element analyses by ICP-MS, including hydride generation. In addition to supporting a range of ongoing projects funded by NSF and other sources, Dr. Godfrey will be improving or developing analytical protocols for the new high resolution magnetic sector ICP-MS for Pb isotope analyses (current applications include tracing anthropogenic and aerosol inputs of Pb in soils), Ca isotope dilution analysis (current applications include tracing Ca transfer across the placenta in pregnant mammals), and U isotope analysis (current applications include understanding weathering processes and mass balance for U in soils). Current research projects (funded) that will be supported include 1) application of trace element and Sr, Nd and Pb isotope data to delineate atmospheric(including anthropogenic) vs. weathering inputs to Hawaiian ecosystems; 2) chemical and isotopic study of geothermal and stream waters along the Main Central Thrust, Nepal, to study role of geothermal circulation in extracting heat and volatiles from tectonically active crust and their impact on stream fluxes; 3) use of Ge/Si ratios to estimate aerosol fluxes of silica to the global oceans; 4) Ge/Si ratios as a tracer of weathering fluxes and plant-soil interactions; 5) Sr, Nd and Pb isotopic data on subduction-related volcanism in Patagonia; 6) trace element distributions in archaeological wood as an indicator of eruptive chronology in the eastern Mediterranean; 7) fate and transport of metals (Cu, Zn, Ag) in peatland soils; 8) speciation and behavior of dissolved Al in tropical soils.; 9) authigenesis of silicate phases during early diagenesis; 10) isotopic (Sr, Nd, Pb) constraints on sources of plume volcanism, Galapagos hot spot.***