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

该合同将资助一种新的电感耦合等离子体质谱计（ICP-MS），它将显著提高现有ICP-OES的灵敏度，并允许与该机构的TIMS机器进行协同分析。新仪器将支持多个学院的地球化学研究。微量元素浓度测量将在降水、干沉积、空气中的颗粒物、自然水中的微量物质、沉积物消化和顺序提取中进行。所要求的碰撞电池技术将有助于从具有多原子干扰的元素（如铁和铬）中获取信号。自动进样器将提高多个用户的吞吐量。此次收购将用于定义人类活动地球化学示踪剂，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剂技术和痕量金属/重稳定同位素技术之间的交叉比较。匹兹堡大学目前正在使用TIMS来了解各种感兴趣的同位素系统（B, Fe, Cr, Cd）。新的ICP-MS将有助于测量环境样品中的元素，并具有互补性。总的研究目标包括构造和解释古记录，特别是那些表明对人类强迫的反应的记录。通过地球系统的金属和类金属通量具有关键的社会重要性，并涉及公共卫生问题。该请求支持几个早期职业pi。通过更好地了解宾夕法尼亚州西南部的金属污染物，K-12教育将得到加强。环境水取样和报告将提供给利益相关者、决策者和公众。ICP-MS仪器将提供给更大的当地科学界。该文书也将纳入课程。＊＊＊

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. ***