Microsensors for in-situ chemical, physical, and radiological characterization of mixed waste. 1998 annual progress report

Technical Report · Mon Jun 01 04:00:00 EDT 1998

DOI:https://doi.org/10.2172/13459· OSTI ID:13459

Thundat, T G; Warmack, R J; Dabestani, R; Britt, P; Bonnesen, P V; Brown, G M

'A widespread need exists for portable, real-time, in-situ chemical, physical, and radiological sensors for characterization of mixed wastes, groundwater, contaminated solids, and process streams. None of the currently available technologies offer a clear path to the development of sensors that are miniature, cost-effective, selective, highly sensitive with a wide dynamic range, and have the ability to work in air or liquid while providing chemical, physical, and radiological information. The objective of this research program is to conduct the fundamental research necessary to develop microcantilever-based micromechanical sensors for in-situ characterization of groundwater, sediments, and mixed wastes. Chemical selectivity will be achieved by coupling surface modification chemistry with molecular recognition agents. Physical measurements of adsorption (absorption) induced deflection (bending) and resonance frequency variation of microcantilevers can be achieved with extreme precision resulting in ppb-ppt sensitivity. Good progress has been made in the first nine months of this project. Progress has been made in three focus areas: radiation detection, detection of heavy metals in water, modification of microcantilever surfaces for chemical selectivity, and pH measurement.'

• Research Organization: Oak Ridge National Lab., TN (US)
• Sponsoring Organization: USDOE Office of Environmental Management (EM), Office of Science and Risk Policy
• OSTI ID: 13459
• Report Number(s): EMSP-60197--98; ON: DE00013459
• Country of Publication: United States
• Language: English

Related Subjects

05
44
54 ENVIRONMENTAL SCIENCES
CHEMICAL WASTES
Chemical Wastes
HIGH-LEVEL RADIOACTIVE WASTES
High-Level Radioactive Wastes
MEASURING INSTRUMENTS
MEASURING METHODS
Measuring Instruments
Measuring Methods
PROGRESS REPORT
Progress Report
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
REMEDIAL ACTION
Radioactive Materials
Radioactive Wastes
Remedial Action