Acquistion of an Inductively-Coupled Plasma Mass Spectrometer for Earth and Ocean Sciences at Lamont-Doherty Geological Observatory

拉蒙特-多尔蒂地质观测站购买了用于地球和海洋科学的电感耦合等离子体质谱仪

• 批准号: 9117825
• 负责人: Philip Froelich
• 金额: $ 15.5万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-15 至 1993-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117825&HistoricalAwards=false
• 关键词: Acquistion; Inductively; Coupled; Plasma; Mass

The oceanographic instrumentation program supports requests to acquire instrumentation for the collection, processing and analysis of oceanographic data. This proposal from Columbia University's Lamont-Doherty Geological Observatory (LDGO) requests funding for acquisition of an Inductively-Coupled Plasma Mass Spectrometer (ICP/MS). This instrument will be used to support NSF-funded research at LDGO and will be made available for shared use by the oceanographic community. LDGO will supply matching funds for this purchase. The inductively-coupled plasma (ICP) interface effectively lowers the detection limit for mass spectrometer analysis. Samples are aspirated into a high temperature argon plasma, which ionizes elements with ionization potentials lower than Ar with an efficiency of over 90% (for 50 elements; 70% for most others). These ions are then pulled through the ICP interface to the mass spectrometer. The instrument will be used for a wide variety of NSF-funded research efforts that require the accurate detection of elemental composition. The ICP-MS analysis technique allows the use of smaller sample volumes and decreases the amount of time required per sample for analysis.

海洋学仪器方案支持获取用于收集、处理和分析海洋数据的仪器的请求。哥伦比亚大学拉蒙特-多尔蒂地质观测站(LDGO)的这项提案要求为购买电感耦合等离子质谱仪(ICP/MS)提供资金。该仪器将用于支持国家科学基金会资助的LDGO研究，并将供海洋学界共享使用。LDGO将为此次收购提供配套资金。电感耦合等离子体(ICP)接口有效地降低了质谱仪分析的检出限。样品被吸入高温Ar等离子体中，它以高于90%的效率电离电离势低于Ar的元素(对于50种元素，对大多数其他元素是70%)。然后，这些离子通过电感耦合等离子体界面被拉到质谱仪。该仪器将用于NSF资助的各种需要准确检测元素组成的研究工作。电感耦合等离子体质谱分析技术允许使用较小的样品体积，并减少每个样品进行分析所需的时间。