Acquisition of a Laser Diffraction Particle Size Analyzer for Research in Sedimentology and Biogeochemistry

购买激光衍射粒度分析仪用于沉积学和生物地球化学研究

• 批准号: 0733234
• 负责人: Elana Leithold
• 金额: $ 6.26万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0733234&HistoricalAwards=false
• 关键词: Acquisition; Laser; Diffraction; Particle; Size

This grant provides support for the acquisition of a laser diffraction particle size analyzer for the Department of Marine, Earth, and Atmospheric Sciences (MEAS) at North Carolina State University. A Beckman Coulter laser diffractometer with the capability for rapid and repeatable determination of grain size distributions in suspensions of sand to clay sized fractions will be acquired. A group of five PIs and their students will use the laser diffractometer for grain size analysis in support of a range of research in sedimentology, carbon cycling, marine stratigraphy, animal-sediment interactions, hydrology and geochemistry. Marine and lacustrine sediments and soils provide a record of past environmental conditions, are important reservoirs in the global carbon cycle, and host a great variety of life forms from bacteria to macrofauna, whose biogeochemical activity controls the fate and transport of naturally occurring and anthropogenic organic and inorganic species. Grain size distributions can reveal a great deal about transport processes and when coupled with other geochemical proxies, provide insight to provenance, paleoenvironmental conditions and diagenetic processes. The laser diffractometer will support improved educational opportunities for undergraduate and graduate students at NCSU. Faculty and student biogeochemical and paleoenvironmental research at NCSU has implications for understanding and reacting to global climate change and for pollutant remediation.

该赠款为北卡罗来纳州立大学海洋，地球和大气科学系（MES）的激光衍射粒径分析仪提供了支持。 贝克曼·库尔特激光衍射仪具有快速和可重复的确定粒度悬浮液到粘土尺寸分数的晶粒尺寸分布的能力。一组五个PI及其学生将使用激光衍射仪进行晶粒尺寸分析，以支持沉积学，碳循环，海洋地层，动物 - 补充相互作用，水文学和地球化学方面的一系列研究。 海洋和湖泊的沉积物和土壤提供了过去的环境条件的记录，是全球碳循环中的重要储层，并拥有从细菌到大氟纳州的各种生命形式，其生物地球化学活性控制着自然出现的和人类典型的有机和无机物质和有机物质和人性化的有机和有机物质的命运和运输。 晶粒尺寸的分布可以揭示有关运输过程以及与其他地球化学代理相结合时的大量信息，为出处，古环境条件和成岩过程提供见解。激光衍射仪将为NCSU的本科和研究生提供改善的教育机会。 NCSU的教师和学生生物地球化学和古环境研究对理解和对全球气候变化和污染物修复的反应具有影响。