An expanded porphyrin approach toward transactinium chelation and the development of porphyrin-coated optical fibers as potential actinide sensors
- Lawrence Berkeley Lab., CA (United States)
- Lawrence Livermore National Lab., CA (United States)
Characterization of the contamination at DOE waste sites and facilities is necessary during environmental restoration. Characterization of toxic waste in containers and storage tanks is needed for effective waste management. Therefore, analytical and monitoring systems are needed for real-time analysis and feedback. The development of in-situ methods to measure chemical properties by specialized instrumentation capable of real-time analysis, without sacrificing sensitivity, has been identified as an area of needed development. Absorption spectroscopy is widely used and considered to be one of the most reliable techniques available for the qualitative and quantitative determination of sample composition. With the advancements in fiber optic technology, using light for remote in-situ sensing of groundwater contaminants has become practical. Significant progress has been made in the area of fiber-optic chemical sensors as can be seen by the number of recent review articles. The objective of this work is to develop a remote sensor for real-time measurement of actinides and concentrations in environmental or process waters based on absorption spectroscopy using internal reflection spectroscopy. Porphyrin coated silica wafers were prepared and the sensitivity and selectivity to actinides was determined.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 86912
- Report Number(s):
- UCRL-ID-119254; ON: DE95015847; TRN: 95:005576
- Resource Relation:
- Other Information: PBD: Dec 1994
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chemical Sensing Using Infrared Cavity Enhanced Spectroscopy: Short Wave Infrared Cavity Ring Down Spectroscopy (SWIR CRDS) Sensor
Feasibility of using fiber optics for monitoring groundwater contaminants. II. Organic chloride optrode
Related Subjects
INCLUDING NUCLEAR AND PARTICLE DETECTORS
54 ENVIRONMENTAL SCIENCES
40 CHEMISTRY
MONITORS
DESIGN
GROUND WATER
MONITORING
WASTE WATER
ACTINIDES
CHEMICAL ANALYSIS
OPTICAL FIBERS
PORPHYRINS
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
NEODYMIUM
COMPLEXES
ACTINIDE COMPLEXES
CHELATING AGENTS
SILICA
COATINGS
REAL TIME SYSTEMS