Protable Analyzer Based on Microfluidic/Nanoengineered electrochemical Sensors for in Situ Characterization of Mixed Wastes [report]

PhD Joseph Wang
2007 unpublished
This project aimed on the development of compact microchip sensing devices for on-site monitoring of pollutants in contaminated DOE sites. As described in this report, we have made a substantial progress, and introduced effective routes for improving the on-site detection of toxic metals and for interfacing microfluidic (Lab-on-Chip) sensing devices with the real world. This activity has been very productive and has already been described in 12 research papers (published in major international
more » ... ajor international journals). The resulting microchip sensor technology should allow testing for toxic metals and other major pollutants to be performed more rapidly, inexpensively, and reliably in a field setting. These new analytical capabilities resulted from the generous DOE support will facilitate the characterization and remediation of mixed waste contaminated sites. ACCOMPLISHMENTS: This project resulted in several major accomplishments that will facilitate the characterization of contaminated nuclear energy sites. In accordance to our original objectives our studies have focused on various fundamental and practical aspects of sensing and microchip devices for monitoring metal contaminants. We have made a substantial progress, and introduced effective routes for improving the on-site detection of toxic metals and for interfacing microchip sensors with the real world. In particular, we introduced highly sensitive electrochemical stripping protocols for ultrasensitive detection of uranium, beryllium or chromium, replaced the toxic mercury electrodes with environmentally-friendly 'green' bismuth sensors, and developed a simple sample introduction for microfluidic analytical devices. This activity has already resulted in 12
doi:10.2172/950865 fatcat:grj637n5ajd4dgi7dpggmomu6a