An expanded porphyrin approach toward transactinium chelation and the development of porphyrin-coated optical fibers as potential actinide sensors

Technical Report · Thu Dec 01 04:00:00 EST 1994

DOI:https://doi.org/10.2172/86912· OSTI ID:86912

Klunder, G ^[1]; Silva, R ^[2]

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1. Lawrence Berkeley Lab., CA (United States)
2. 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., 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
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ACTINIDE COMPLEXES
ACTINIDES
CHELATING AGENTS
CHEMICAL ANALYSIS
COATINGS
COMPLEXES
DESIGN
GROUND WATER
MONITORING
MONITORS
NEODYMIUM
OPTICAL FIBERS
PORPHYRINS
REAL TIME SYSTEMS
SILICA
WASTE WATER