SBIR Phase I: Fast field detection of trace fluorocarbon compounds in water

SBIR 第一阶段：水中痕量碳氟化合物的快速现场检测

• 批准号: 2025338
• 负责人: Qingwu Wang
• 金额: $ 25.6万
• 依托单位: 2WITECH SOLUTIONS LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2022-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2025338&HistoricalAwards=false
• 关键词: SBIR; Phase; Fast; field; detection

The broader impact/commercial potential of this SBIR Phase I project is in the development of a low-cost, high sensitivity sensor to measure contaminants in groundwater. These measurements are currently performed using technologies that are relatively expensive ($250-300 per water sample) and have a long turn-around time (10-15 business days). The proposed on-site optical detection technology targets a 10-fold reduction in test price ($20-30 per water sample), and fast detection time (10 minutes). The proposed sensor will possess the following advanced attributes: high sensitivity, high specificity, fast detection, ease of operation, low power consumption, zero chemical release, low operational cost, remote measurements, and long-term stability without the need for recalibration. Moreover, direct use of the sample water will potentially eliminate uncertainties associated with measurement techniques.This Small Business Innovation Research Phase I project is directed toward development of a powerful on-site detection and monitoring system for trace levels of perfluoroalkyl substances (PFAS) in groundwater. The proposed technology uses fluorescence quenching induced phase shift. A fluorescent material with PFAS molecule binding sites will be fabricated and its PFAS-induced fluorescence quenching will be experimentally evaluated. Using phase fluorometry, the phase shift of quenched emissions against excitation pulses will be recorded and correlated to the concentration of PFAS in water. The key technical risks lie in improving sensitivity by three orders of magnitude for a complex aqueous sample.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

SBIR第一阶段项目的更广泛的影响/商业潜力是开发一种低成本，高灵敏度的传感器来测量地下水中的污染物。这些测量目前使用的技术相对昂贵（每个水样250 -300美元），并且周转时间长（10-15个工作日）。拟议的现场光学检测技术的目标是降低10倍的测试价格（每个水样20 -30美元）和快速检测时间（10分钟）。拟议的传感器将具有以下先进的属性：高灵敏度，高特异性，快速检测，易于操作，低功耗，零化学释放，低运营成本，远程测量和长期稳定性，而无需重新校准。此外，直接使用水样还可以消除测量技术带来的不确定性。该小型企业创新研究一期项目旨在开发一种功能强大的地下水中痕量全氟烷基物质（PFAS）的现场检测和监测系统。所提出的技术使用荧光猝灭诱导的相移。制备了具有PFAS分子结合位点的荧光材料，并对其PFAS诱导的荧光猝灭进行了实验研究。使用相位荧光法，猝灭发射对激发脉冲的相移将被记录并与水中PFAS的浓度相关。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。