Early Career: Acquisition of an Inductively Coupled Plasma - Mass Spectrometer (ICP-MS) for Research in Geochemical, Environmental, and Paleoenvironmental Geoscience

该奖项将资助一种新的电感耦合等离子体质谱仪(ICP-MS)，它将显著提高现有的ICP-OES的灵敏度，并允许与研究所的TIMS机器进行协同分析。新仪器将支持多个教职员工进行的地球化学调查。将在降水、干沉积、空气中的颗粒物、天然水域中的痕量物质、沉积物消化和顺序提取中进行痕量元素浓度测量。所要求的碰撞池技术将有助于从铁和铬等具有多原子干扰的元素获得信号。自动取样器将提高来自多个用户的吞吐量。这项收购将用于确定人类活动的地球化学示踪剂--扩大潜在示踪剂的清单，特别是在地表水文和大气系统中，并促进气态稳定同位素示踪技术与痕量金属/重金属稳定同位素技术之间的交叉比较。匹兹堡大学目前使用TIMS来了解各种感兴趣的同位素系统(B、Fe、Cr、Cd)。新的电感耦合等离子体质谱仪将帮助测量环境样品中的元素，并具有互补性。总体研究目标包括构造结构和解释古记录，特别是那些指示对人类强迫的反应的古记录。通过地球系统的金属和类金属熔剂具有重要的社会意义，并涉及公共卫生问题。此请求支持多个早期职业绩效指标。通过更好地了解宾夕法尼亚州西南部的金属污染物，将加强K-12教育。将向利益攸关方、政策制定者和公众提供环境水样和报告。将向当地更大的科学界提供电感耦合等离子体质谱仪器。该乐器也将被纳入课程。***

0948366BainThis award will fund a new inductively Coupled plasma-mass spectrometer (ICP-MS) which will significantly increase sensitivity over the existing ICP-OES and allow synergistic analyses with the institution's TIMS machine. The new instrument will support geochemical investigations by multiple faculty. Trace elemental concentration measurements will be made in precipitation, dry deposition, airborne particulate matter, trace materials in natural waters, sediment digests and in sequential extractions. The requested collision cell technology will assist in obtaining signals from elements with polyatomic interferences such as iron and chromium. An autosampler will improve throughput from multiple users. The acquisition will be used to define human activity geochemical tracers - expanding the list of potential tracers, particularly in surface hydrologic and atmospheric systems, and facilitate cross-comparison between gaseous stable isotope tracer techniques and trace metal/heavy stable isotope techniques. TIMS is currently used at the University of Pittsburgh in order to understand a variety of isotope systems of interest (B, Fe, Cr, Cd). The new ICP-MS will assist in measuring elements from environmental samples and be complementary. Overall research goals involve tectonic structuring and interpreting paleorecords, especially those indicating responses to human forcings. Metal and metalloid flux through Earth systems is of critical societal importance and touches on public health issues. This request supports several early career PIs. K-12 education will be enhanced through better understanding metal contaminants in Southwestern Pennsylvania. Environmental water sampling and reporting will be made available to stakeholders and policy makers and the general public. The ICP-MS instrumentation will be made available to the larger local scientific community. The instrument will also be incorporated into courses. ***