A5026077273- Radioactive element chemistry and processing
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Lanthanide and Transition Metal Complexes
- Nuclear and radioactivity studies
- Analytical chemistry methods development
- Chemical and Physical Properties in Aqueous Solutions
- Chemical Synthesis and Characterization
- Inorganic and Organometallic Chemistry
- Graphite, nuclear technology, radiation studies
- Magnetism in coordination complexes
- Atmospheric and Environmental Gas Dynamics
- Metal complexes synthesis and properties
- Extraction and Separation Processes
- Nuclear Physics and Applications
- Analytical Chemistry and Chromatography
- Radiopharmaceutical Chemistry and Applications
- Radiation Detection and Scintillator Technologies
- Ferroelectric and Piezoelectric Materials
- Chemical Thermodynamics and Molecular Structure
- Electrochemical Analysis and Applications
- Chemical Synthesis and Reactions
- Nuclear Materials and Properties
- Quantum Dots Synthesis And Properties
- Oxidative Organic Chemistry Reactions
Oak Ridge National Laboratory
2024
New Mexico State University Carlsbad
2013-2023
Nagpur Institute of Technology
2018
Florida State University
2006-2015
Bhabha Atomic Research Centre
1996-2008
Utkal University
1996-1999
The release of radioactivity into the atmosphere from damaged Fukushima Daiichi nuclear power plant started on March 12th, 2011. Among various radionuclides released, iodine -131 (131I) and cesium isotopes (137Cs 134Cs) were transported across Pacific Ocean reached United States 17–18 Consequently, an elevated level fission products 131I, 132I, 132Te, 134Cs 137Cs detected in air, water, milk samples collected between 17 April 4, continuous monitoring activities over a period 25 days spatial...
The formation and the structure of ternary complexes trivalent Am, Cm, Eu with mixtures EDTA+NTA (ethylenediamine tetraacetate nitrilotriacetate) have been studied by time-resolved laser fluorescence spectroscopy, 13C NMR, extended X-ray absorption fine structure, two-phase metal ion equilibrium distribution at 6.60 m (NaClO4) a hydrogen concentration value (pcH) between 3.60 11.50. In complexes, EDTA binds via four carboxylates two nitrogens, while binding NTA varies concentration, pcH,...
Abstract The protonation constants of DTPA (diethylenetriaminepentaacetic acid) and two derivatives DTPA, 1-R(4,4-diphenyl cyclohexyl-phosphonyl-methyl diethylenentriaminepentaacetic acid (MS-325) (R)-hydroxymethyl-diethylenentriaminepentaacetic (HMDTPA) were determined by potentiometric titration in 0.1 M NaClO 4 . formation 1 : complexes Am 3+ , Cm Ln cations with these three ligands investigated competition ethylenediaminetetraacetic (EDTA) the solvent extraction method aqueous solutions...
Spectroscopy has been used to determine the number of coordinated water molecules bound Eu(III) and Cm(III) in a series binary complexes polyaminocarboxylate their ternary with dicarboxylates as well similar ligands additional O-, N-, S-donors. Complexes alone contain ca. 2.5–3.0 waters hydration. Increasing steric requirement by increasing groups ligand backbone does not appreciably change hydration these cations. The stability constants Cm(III), Am(III), were measured solvent extraction...
Abstract Solvent extraction and potentiometric titration methods have been used to measure the stability constants of Cm(III), Am(III), Eu(III) with both linear cyclic carboxylates polyaminocarboxylates in an ionic strength 0.1 mol L−1 (NaClO4). Luminescence lifetime measurements Cm(III) were study change hydration upon complexation over a range concentrations pH values. Aromatic carboxylates, phthalate (1,2 benzene dicarboxylates, PHA), trimesate (1,3,5 tricarboxylates, TSA), pyromellitate...