Acquisition of a tunable diode laser absorption spectroscopic isotope analyzer and peripheral induction furnace

购置可调谐二极管激光吸收光谱同位素分析仪和外围感应炉

• 批准号: 0929398
• 负责人: Zachary Sharp
• 金额: $ 6.91万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0929398&HistoricalAwards=false
• 关键词: Acquisition; tunable; diode; laser; absorption

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This award will fund the acquisition of a new tunable diode laser absorption spectroscopy isotope analyzer (TDLAS) and a tabletop induction furnace. We intend to: 1) Calibration the system in a controlled glove box, followed by a continuation of atmospheric water vapor studies in New Mexico and at the Mauna Loa site; 2) undertake controlled laboratory studies of evaporation and condensation in order to better understand controls on the composition of atmospheric water vapor, particularly the deuterium-excess parameter; 3) Develop an extraction procedure for analysis of H and O isotopes from fluid inclusions; 4) Develop an extraction procedure for H isotope analysis for hydrous minerals, nominally anhydrous minerals and extraterrestrial materials; 5) Develop a step-heating extraction procedure for H and O isotopes from clay minerals; 6) Study H and O isotope ratios related to evapo-transpiration in the Rio Grande Valley ecosystem; and 7) Measure H and O isotope values of soil gas (soil water). In the course of this work, we will provide an accurate calibration of the system at low atmospheric p(H2O), and develop analytical procedures that will benefit the overall geological community by providing novel 'front-end' applications to the TDLAS system.The TDLAS will become an integral part of research and teaching at the University of New Mexico (UNM). UNM is one of only three Universities in the country that is designated as both a Hispanic-serving institution and a Carnegie Doctoral/Research Extensive University, and this laboratory routinely hires minority and/or women undergraduate students to work in the laboratory or as part of a undergraduate honors research project. The TDLAS will be an important part of our ongoing program to involve undergraduates in research because it is easy to use, and they can be active participants in the projects outlined in this proposal. The instrument will also be used for teaching in environmental studies and stable isotope courses, as it can be used with only minimal instruction.

该奖项根据 2009 年美国复苏和再投资法案（公法 111-5）提供资金。 该奖项将资助购买新型可调谐二极管激光吸收光谱同位素分析仪（TDLAS）和台式感应炉。 我们打算：1）在受控手套箱中校准系统，然后继续在新墨西哥州和莫纳罗亚遗址进行大气水蒸气研究； 2) 进行蒸发和冷凝的受控实验室研究，以便更好地了解对大气水蒸气成分的控制，特别是氘过量参数； 3) 开发从流体包裹体中分析 H 和 O 同位素的提取程序； 4) 开发含水矿物、名义无水矿物和外星物质的 H 同位素分析提取程序； 5) 开发从粘土矿物中分步加热提取H和O同位素的工艺； 6) 研究与里奥格兰德河谷生态系统蒸发蒸腾相关的H和O同位素比率； 7) 测量土壤气体（土壤水）的H、O同位素值。 在这项工作过程中，我们将在低大气 p(H2O) 下对系统进行精确校准，并开发分析程序，通过为 TDLAS 系统提供新颖的“前端”应用程序，使整个地质界受益。TDLAS 将成为新墨西哥大学 (UNM) 研究和教学的一个组成部分。新墨西哥大学是美国仅有的三所被指定为拉美裔服务机构和卡内基博士/研究型广泛大学的大学之一，该实验室通常雇用少数族裔和/或女本科生在实验室工作或作为本科生荣誉研究项目的一部分。 TDLAS 将成为我们正在进行的让本科生参与研究的计划的重要组成部分，因为它易于使用，而且他们可以积极参与本提案中概述的项目。该仪器还将用于环境研究和稳定同位素课程的教学，因为只需最少的指导即可使用。