Acquisition Of A Laser Particle Analyzer

购买激光颗粒分析仪

• 批准号: 0111510
• 负责人: Thomas Dewers
• 金额: $ 4.76万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-15 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0111510&HistoricalAwards=false
• 关键词: Acquisition; Laser; Particle; Analyzer

0111510DewersParticle size distribution of aggregates influences many material properties, such as strength, friction, porosity and permeability. Grain-size distributions of fine-grained sediment yield important paleoclimate proxy data. Temporal and spatial resolution of particle size distributions can be used to infer growth and nucleation rates in crystallite suspensions, and sediment sorption properties, as well as aridity and wind strength from sediment cores to name a few applications. In contrast to more traditional methods, e.g. sieving, settling, or optical microscopy, laser light scattering has emerged as an efficient, accurate, and rapid method for particle size and volume distribution of aggregates and suspensions. We propose to purchase a state-of-the-art Coulter LS230 Laser Particle Analyzer, which has an unparalleled sensitivity over the range of 0.04 to 2000 microns in a single analysis. We will use two different sample introduction modules, allowing measurements in water, organic solvents, oils, or as a dry aggregate. This instrument will be used in sedimentological, geochemical, rock mechanics, and reservoir characterization studies that include: strength and permeability evolution in fault gouge, microbial influenced nucleation and growth of carbonate and sulfate minerals, calibration and quantification of grain-size distribution information from borehole image well logs, climate interpretations of lacustrine sediment and loessite, and "sanding potential" of seafloor boreholes among others.***

0111510 Dewers骨料的粒度分布影响许多材料特性，如强度、摩擦力、孔隙率和渗透率。细粒沉积物的粒度分布是重要的古气候代用资料。 粒度分布的时间和空间分辨率可用于推断微晶悬浮液中的生长和成核速率、沉积物吸附特性以及沉积物芯的干燥度和风力等应用。 与更传统的方法，例如筛分，沉降或光学显微镜相比，激光散射已成为一种有效，准确和快速的方法，用于测量聚集体和悬浮液的粒度和体积分布。 我们建议购买一台最先进的Coulter LS 230激光颗粒分析仪，它在单次分析中具有无与伦比的灵敏度，范围为0.04至2000微米。 我们将使用两种不同的样品引入模块，允许在水、有机溶剂、油或干聚集体中进行测量。 该仪器将用于沉积学、地球化学、岩石力学和储层表征研究，包括：断层泥中强度和渗透性演变，微生物影响碳酸盐和硫酸盐矿物的成核和生长，来自钻孔成像测井的粒度分布信息的校准和量化，湖泊沉积物和黄土的气候解释，以及海底钻孔的“出砂潜力”等。