SBIR Phase I: Total Organic Carbon Analysis for On-Site Monitoring

SBIR 第一阶段：用于现场监测的总有机碳分析

• 批准号: 9660634
• 负责人: Michael Carter
• 金额: $ 7.5万
• 依托单位: Eltron Research, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9660634&HistoricalAwards=false
• 关键词: SBIR; Phase; Total; Organic; Carbon

*** 96-60634 Vreeke This Small Business Innovation Research (SBIR) Phase I Project will develop a total organic carbon (TOC) analyzer suitable for long term, on-site monitoring. The analytical technique relies on the quantitative oxidation of dissolved and suspended organics to carbon dioxide by the photocatalytic action of titanium dioxide. The rapid equilibrium of the resulting carbon dioxide with carbonate species allows it to be detected by a conductivity measurement. The presence of preexisting, conducting inorganic carbon species and dissolved ionic species will be accounted for using an additional conductivity measurement before the titanium dioxide-catalyzed photooxidation. The sensing strategy will require a differential conductivity measurement. The benefit to this analytical approach is the absence of consumables. Size of the analyzer will be minimized by integrating the fluid handling and conductivity electrodes onto a silicon wafer. This will be accomplished using a microlithography-created flow system and titanium dioxide reaction chamber. The flow system's small dimensions and therefore small fluid volumes will drastically reduce the power requirements and allow the entire device to be contained in a portable unit. Commercial applications are expected for sensors that enable rapid on-site determination of total organic carbon. Such uses will be made in real-time monitoring in effluent streams from waste treatment sites, power generation facilities, and chemical processing plants. ***

*** 96-60634 Vreeke 该小型企业创新研究 (SBIR) 第一阶段项目将开发一款适合长期现场监测的总有机碳 (TOC) 分析仪。 该分析技术依赖于二氧化钛的光催化作用将溶解和悬浮的有机物定量氧化为二氧化碳。 产生的二氧化碳与碳酸盐物质的快速平衡使其可以通过电导率测量来检测。 在二氧化钛催化光氧化之前，将使用额外的电导率测量来解释预先存在的导电无机碳物质和溶解的离子物质的存在。 传感策略需要微分电导率测量。 这种分析方法的好处是无需消耗品。 通过将流体处理和电导电极集成到硅片上，可以最大限度地减小分析仪的尺寸。 这将使用微光刻创建的流动系统和二氧化钛反应室来完成。 该流动系统尺寸小，因此流体体积小，将大大降低电力需求，并允许整个设备包含在便携式装置中。 能够快速现场测定总有机碳的传感器有望实现商业应用。 此类用途将用于实时监测废物处理场、发电设施和化学加工厂的废水流。 ***