Real Time Analyzers for Gases, Particles and Metals

气体、颗粒和金属实时分析仪

• 批准号: 0731792
• 负责人: Purnendu Dasgupta
• 金额: $ 31.72万
• 依托单位: University of Texas at Arlington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-01-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0731792&HistoricalAwards=false
• 关键词: Real; Time; Analyzers; Gases; Particles

With support from the Chemistry Research Instrumentation and Facilities - Instrument Development (CRIF-ID) Program, Purnendu Dasgupta in the Departments of Chemistry at Texas Tech University will develop miniaturized instrumentation for real time analysis of gases, particles and metals in ambient air. The instrument modules consists of (a) a miniature membrane-based denuder that collects and removes soluble gases, coupled with a novel self-filtering particle collecter where the collected gas and particle extracts are separately analyzed by a capillary scale anion chromatograph and a ammonia/ammonium detector; (b) a capillary scale anion chromatograph and a capillary scale cation chromatograph; (c) a metal determination system; and (d) a spectroscopic absorption based particle sensor in which deposition of particles occur according to their size. This instrumentation will have a significant impact in the areas of atmospheric chemistry and national security. For example, it will allow communities to rapidly and easily determine local sources of air pollution. The highly sensitive protein aerosol detector can provide an early warning system in the event of a bioterrorism attack.

在化学研究仪器和设施-仪器开发（CRIF-ID）项目的支持下，德克萨斯理工大学化学系的Purnendu Dasgupta将开发用于实时分析环境空气中气体、颗粒和金属的小型化仪器。该仪器模块包括(a)一个微型膜基光度计，用于收集和去除可溶性气体，以及一个新型的自过滤颗粒收集器，其中收集的气体和颗粒提取物分别由毛细管阴离子色谱仪和氨/铵检测器进行分析；(b)毛细管尺度阴离子色谱仪和毛细管尺度阳离子色谱仪；(c)金属测定系统；(d)基于光谱吸收的颗粒传感器，其中颗粒根据其大小发生沉积。该仪器将对大气化学和国家安全领域产生重大影响。例如，它将使社区能够快速、轻松地确定当地的空气污染源。高灵敏度的蛋白质气溶胶探测器可以在发生生物恐怖袭击时提供早期预警系统。