Acquisition of an ICP-OES and IC to Increase Hydrological and Geochemical Research and Education in the School of Geosciences at the University of Oklahoma

该EAR-IF奖将为购买电感耦合等离子体光学发射光谱仪（ICP-OES）和离子色谱仪（IC）提供资金，以增加俄克拉荷马大学的地球化学和水文研究和教育。这些仪器将通过填补关键分析空白，提高地球科学学院（SoG）的研究能力，并增加教职员工、学生和外部研究人员对水金属和阴离子/阳离子分析的访问。ICP-OES和IC将支持正在进行的研究，重点是溶解有机物-溪流和地下水中的微量金属相互作用、酸性矿井排水地球化学和水文学、土地利用对水质的影响、地球和火星上的化学风化以及盐水地球化学。本科生和研究生的批判性研究训练将通过在课程和研究经验中整合使用这些工具来完成。为以环境化学和水质教育为重点的外联活动提供资金将涉及分水岭团体、公民科学家和代表性不足的URM少数群体，并将包括直接接触仪器。俄克拉荷马大学将使用该合同提供的资金购买Thermo Scientific iCap Pro XP Duo ICP-OES和Dionex Integrion高压离子色谱仪（HPIC）。ICP-OES（附带氢化物系统）将提供敏感的元素和痕量金属分析：1)地下水和地表水；2)卤水和高总溶解固体（TDS）的水溶液样品；3)土壤和沉积物渗滤液；4)被消化的岩石。同时，双视图ICP-OES （Thermo Scientific iCap Pro XP）具有光学灵敏度和分辨率，是广泛的样品元素组成和浓度的理想选择。HPIC系统非常适合分析天然水中的主要阴离子（如Cl-、NO3-、SO42-）和阳离子（如Na+、Ca2+、NH4+），以及盐水地球化学中的高氯酸盐离子（ClO4-）。高压能力的HPIC将允许离子的敏感测定与提高峰分辨率在预期的复杂水性基质。ICP-OES和IC的相对易用性和健壮性非常适合学生、博士后工作人员、教师和支持研究和教育的外部用户动手使用。与公民科学团体（Blue Thumb）和大学预科机构的新合作将利用该仪器作为俄克拉何马大学SoG继续开展的STEAM外展计划的一部分。与琼斯学院和纳瓦霍民族等部落教育机构合作开展环境教育，对于提高美洲原住民对地球科学的参与至关重要。外展资金还包括一名兼职研究生导师，以提供外展支持。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This EAR-IF award will provide funds for the acquisition of an inductively coupled plasma optical emission spectrometer (ICP-OES) and an ion chromatograph (IC) to increase geochemical and hydrological research and education at the University of Oklahoma. The instruments will enhance research capacity in the School of Geosciences (SoG) by filling a critical analytical void and increase access for faculty, students, and external researchers to aqueous metal and anion/cation analyses. The ICP-OES and IC will support on-going research focusing on dissolved organic matter – trace metal interactions in streams and groundwater, acid mine drainage geochemistry and hydrology, land use impacts on water quality, chemical weathering on Earth and Mars, as well as on brine geochemistry. Critical research training of undergraduate and graduate students will be accomplished by integrating the use of the instruments in courses and research experiences. Funding for outreach activities focusing on environmental chemistry and water quality education will involve watershed groups, citizen scientists, and underrepresented minority URM populations and will incorporate direct exposure to the instrumentation.Oklahoma University will use the funds provided by this award to purchase a Thermo Scientific iCap Pro XP Duo ICP-OES and a Dionex Integrion High-Pressure Ion Chromatograph (HPIC). The ICP-OES (with accompanying hydride system) will provide sensitive elemental and trace metal analysis of: 1) Groundwater and surface waters; 2) Brines and high total dissolved solids (TDS) aqueous samples; 3) Soil and sediment leachates; and 4) Digested rocks. The simultaneous, dual view ICP-OES (Thermo Scientific iCap Pro XP) has the optical sensitivity and resolution that is ideal for the wide range of sample elemental composition and concentrations. The HPIC system is ideal for analysis of major anions (i.e., Cl-, NO3-, SO42-) and cations (i.e., Na+, Ca2+, NH4+) in natural waters and perchlorate ion (ClO4-) in brine geochemistry. The high-pressure capability of the HPIC will allow sensitive determination of ions with enhanced peak resolution in expected complex aqueous matrices. The relative ease of use and robustness of ICP-OES and IC is ideal for hands-on use by students, post-doctoral staff, faculty, and outside users in support of research and education. New collaboration with citizen science groups (Blue Thumb) and pre-college institutions will utilize the instrument as part of continuing STEAM outreach initiatives by the SoG at Oklahoma University. Collaborative environmental educational outreach with tribal educational institutions such as the Jones Academy and Navajo Nation is vital to increasing participation of Native Americans in the geosciences. Outreach funding also includes a part-time graduate student mentor to provide outreach support.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.