Acquisition of X-Ray Flourescence Instrumentation for Archaeological, Geological, and Environmental Research and Training

采购 X 射线荧光仪器用于考古、地质和环境研究与培训

• 批准号: 9601715
• 负责人: Nicholas Pingitore
• 金额: $ 11.11万
• 依托单位: University of Texas at El Paso
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 1999-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9601715&HistoricalAwards=false
• 关键词: Acquisition; Ray; Flourescence; Instrumentation; Archaeological

9601715 Pingitore This grant provides $111,126 as partial support of the costs of acquiring an X-ray microfluorescence (XRMF) spectrometer. This instrument is comparable to an energy dispersive XRF but has a very narrow collimated X-ray beam which allows non- destructive elemental analyses of geological and archaeological samples at relatively high spatial resolutions (~ 30 microns). Although this instrument is also comparable to an electron microprobe (EMP) in many of its capabilities, the XRMF can handle much larger samples and little to no sample preparation is required making XRMF analyses relatively simple to learn and therefore amenable to undergraduate student involvement. This instrument will be used for a variety of interdisciplinary research topics at this largest Hispanic-majority institution in the U.S. including, non-destructive compositional analyses of rare archaeological artifacts such as pottery shards and bone as indicators of source material locations and thus settlement patterns and dietary habits of ancient civilizations, analyses of the Sr/Ca ratio in growth banded corals as proxies for paleo sea surface temperatures and the analyses of plant tissues for toxic metals in environmental studies. ***

这笔赠款提供111,126美元，作为购买x射线微荧光光谱仪的部分费用支持。该仪器与能量色散XRF相当，但具有非常窄的准直x射线束，允许以相对较高的空间分辨率（~ 30微米）对地质和考古样品进行非破坏性元素分析。虽然该仪器在许多功能上也可以与电子微探针（EMP）相媲美，但XRMF可以处理更大的样品，并且几乎不需要样品制备，这使得XRMF分析相对容易学习，因此适合本科生参与。这台仪器将用于这个美国最大的西班牙裔占多数的机构的各种跨学科研究课题，包括对稀有考古文物（如陶器碎片和骨头）的非破坏性成分分析，作为材料来源位置的指标，从而确定古代文明的定居模式和饮食习惯，分析生长带状珊瑚的Sr/Ca比值作为古海面温度的代表，以及分析环境研究中植物组织中的有毒金属。＊＊＊