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MRI: Acquisition of a Raman spectrometer for ocean acidification and marine debris research

MRI：购买拉曼光谱仪用于海洋酸化和海洋碎片研究

基本信息

批准号：
2117987
负责人：
Thomas DeCarlo
金额：
$ 32万
依托单位：
Hawaii Pacific University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-01 至 2023-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2117987&HistoricalAwards=false
关键词：
MRI Acquisition Raman spectrometer ocean

项目摘要

The ocean—and the ecosystem goods and services that it provides—faces a gauntlet of impacts from human activities including climate change caused by carbon emissions and pollution. Ocean acidification and plastic debris are among the two longest-lasting impacts to marine environments, owing to the long retention times of carbon dioxide and non-degradable debris in the ocean. The rates at which human carbon emissions and plastic particles enter the ocean are only increasing, and both are cumulative, meaning that the impacts of these two sources of pollution are also increasing. Marine calcifying organisms are highly sensitive to ocean acidification, and a wide range of marine species from plankton to fish to whales are affected by plastics. One of the most powerful tools available to investigate ocean acidification and marine debris is Raman spectrometry, a technique that uses lasers to probe the structural properties of minerals and polymers. This award provides for the acquisition of a Raman spectrometer at Hawaiʻi Pacific University, in a location uniquely situated adjacent to coral reefs and near the epicenter of plastic accumulation in the Pacific Ocean.The new Raman spectrometer will facilitate a range of studies into the mechanisms by which calcifying organisms build their shells and skeletons. The high spatial and spectral resolution of the instrument, combined with its topography mapping and submersible objectives, will enable quantification of the chemical conditions at the micro-scale site of calcification, visualization of micron-scale banding patterns, and in vivo analysis of corals, coralline algae, and foraminifera. Additionally, the instrument will enable identification of the polymers in debris collected from the ocean and Hawaiian beaches, information that will help understand the source and fate of plastics in the marine environment. With the non-destructive and rapid analysis capabilities of Raman spectrometry, the instrument will be readily available to visiting researchers, and the instrument will be the focal point of new laboratory classes that will substantially improve the training of undergraduate and graduate students at Hawaiʻi Pacific University.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.

海洋及其提供的生态系统产品和服务面临着人类活动的影响，包括由碳排放和污染引起的气候变化。海洋酸化和塑料垃圾是对海洋环境持续时间最长的两种影响之一，因为二氧化碳和不可降解垃圾在海洋中停留的时间很长。人类碳排放和塑料颗粒进入海洋的速度只会增加，而且两者都是累积的，这意味着这两种污染源的影响也在增加。海洋钙化生物对海洋酸化高度敏感，从浮游生物到鱼类再到鲸鱼的各种海洋物种都受到塑料的影响。拉曼光谱法是调查海洋酸化和海洋废弃物的最有力工具之一，这是一种利用激光探测矿物和聚合物结构特性的技术。该合同规定，夏威夷太平洋大学将获得一台拉曼光谱仪，该大学位于珊瑚礁附近，靠近太平洋塑料堆积的中心。新的拉曼光谱仪将有助于对钙化生物建造外壳和骨骼的机制进行一系列研究。该仪器的高空间和光谱分辨率，加上其地形测绘和潜水目标，将能够量化微尺度钙化点的化学条件，可视化微米尺度带型，并对珊瑚、珊瑚藻和有孔虫进行体内分析。此外，该仪器将能够识别从海洋和夏威夷海滩收集的碎片中的聚合物，这些信息将有助于了解海洋环境中塑料的来源和命运。凭借拉曼光谱法的非破坏性和快速分析能力，该仪器将随时提供给来访的研究人员，该仪器将成为新实验室课程的焦点，这将大大改善夏威夷太平洋大学本科生和研究生的培训。该奖项反映了NSF的法定使命，并被认为值得通过使用基金会的智力价值进行评估来支持和更广泛的影响审查标准。