Acquisition of a High Resolution ICP-MS to Expand Continuous Ultra-Trace Ice Core and Other Environmental Analyses

购买高分辨率 ICP-MS 以扩展连续超痕量冰芯和其他环境分析

• 批准号: 0421412
• 负责人: Joseph McConnell
• 金额: $ 27.51万
• 依托单位: Nevada System of Higher Education, Desert Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0421412&HistoricalAwards=false
• 关键词: Acquisition; Resolution; ICP; MS; Expand

3This MRI award supports the acquisition of an Element2, double-focusing HR-ICPMS and additional equipment to be operated in parallel with the existing ICP instruments. Given the high cost of collecting and storing ice cores -and their potential to provide highly detailed information on past atmospheric chemistry, atmospheric and oceanic circulation, and anthropogenic pollution across a wide range of temporal and spatial scale - it is clear that the best possible analytical procedures and instrumentation for ice core analyses are warranted, particularly for deep cores such as the upcoming Inland bedrock ice core in West Antarctica where sample availability is very limited. The scientific merit of this project is that two parallel HR-ICP-MS instruments operating in real time would allow improved, targeted measurements of a more comprehensive suite of elements on a single ice core sample than is possible with one HR-ICP-MS. It would also allow for additional analyses (e.g., soluble iron [Fe] and Fe speciation) since the HR-ICP-MS requires only 40% as much sample volume as the ICP-OES. NSF support for the proposed instrument acquisition will result in significant advances in the study of past climates, oceanic and atmospheric circulation, atmospheric chemistry, and anthropogenic pollution using glaciochemistry. The availability of a second HR-ICP-MS will further improve and expand research capabilities for DRI and University and Community College System of Nevada (UCCSN) faculty working in various fields (e.g., pollution aerosols in precipitation, groundwater fingerprinting, determination of sources of colloidal material in surface waters, trace element/tree ring analysis with implications for environmental health, trace element analysis in archeology). A related broader impact is that this will allow the institution to attract new faculty (with a goal of increasing diversity). This will also improve and expand opportunities for graduate and undergraduate students throughout the state.

3该MRI奖项支持购买Element 2、双聚焦HR-ICPMS和与现有ICP仪器并行操作的其他设备。鉴于收集和储存冰芯的成本很高-而且它们有可能提供关于过去大气化学、大气和海洋环流以及各种时空尺度的人为污染的非常详细的信息-显然，有必要为冰芯分析提供尽可能最好的分析程序和仪器，特别是对于深芯，例如即将在南极洲西部的内陆基岩冰芯，其中样品的可用性非常有限。 该项目的科学价值在于，两台平行的高分辨电感耦合等离子体质谱仪在真实的时间内运行，与一台高分辨电感耦合等离子体质谱仪相比，可以对单个冰芯样品上的一套更全面的元素进行改进的、有针对性的测量。可溶性铁[Fe]和Fe形态），因为HR-ICP-MS仅需要ICP-OES的40%的样品体积。美国国家科学基金会对拟议仪器采购的支持将使利用冰川化学研究过去气候、海洋和大气环流、大气化学和人为污染取得重大进展。 第二个HR-ICP-MS的可用性将进一步提高和扩大DRI和内华达州大学和社区学院系统（UCCSN）教师在各个领域工作的研究能力（例如，降水中的污染气溶胶、地下水指纹、确定地表沃茨中胶体物质的来源、对环境健康有影响的微量元素/树木年轮分析、考古学中的微量元素分析）。 一个相关的更广泛的影响是，这将使该机构能够吸引新的教师（以增加多样性的目标）。 这也将改善和扩大全州研究生和本科生的机会。