Search Results - "Choppin, G.R"

Thermodynamics and dissociation constants of carboxylic acids at high ionic strength and temperature by Thakur, P., Mathur, J.N., Moore, R.C., Choppin, G.R.

“…Thermodynamic parameters and dissociation constants of carboxylic acids at high ionic strength and temperature were determined by the potentiometric titration…”
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Complexation thermodynamics and structural aspects of actinide–aminopolycarboxylates by Choppin, G.R., Thakur, P., Mathur, J.N.

“…The interaction of trivalent actinides with aminopolycarboxylate ligands in aqueous solution is reviewed. The strength of complexation to form binary and…”
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Complexation thermodynamics and the formation of the binary and the ternary complexes of tetravalent plutonium with carboxylate and aminocarboxylate ligands in aqueous solution of high ionic strength by Thakur, P., Pathak, P.N., Choppin, G.R.

“…The stability constants of the binary and the ternary complexes of Pu 4+ have been measured for certain carboxylate and aminocarboxylate ligands in aqueous…”
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Thermodynamics and laser luminescence spectroscopy of binary and ternary complexation of Am3+, Cm3+ and Eu3+ with citric acid, and citric acid+EDTA at high ionic strength by Mathur, J.N., Cernochova, K., Choppin, G.R.

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Complexation thermodynamics and the structure of the binary and the ternary complexes of Am 3+, Cm 3+ and Eu 3+ with IDA and EDTA + IDA by Choppin, G.R., Thakur, P., Mathur, J.N.

“…The formation and the structure of the ternary complex, M(EDTA)(IDA) 3− of Am 3+, Cm 3+ and Eu 3+ with mixtures of EDTA + IDA were studied by TRLFS, NMR ( 1H…”
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Complexation thermodynamics and the structure of the binary and the ternary complexes of Am 3+, Cm 3+ and Eu 3+ with CDTA and CDTA + IDA by Thakur, P., Mathur, J.N., Choppin, G.R.

“…The structures of the ternary complexes, M(CDTA)(IDA) 3− and M(CDTA)(IDA)(H 2O) 3− of Am 3+, Cm 3+ and Eu 3+ have been established by TRLFS, NMR ( 1H and 13C)…”
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Thermodynamics and laser luminescence spectroscopy of binary and ternary complexation of Am 3+, Cm 3+ and Eu 3+ with citric acid, and citric acid + EDTA at high ionic strength by Mathur, J.N., Cernochova, K., Choppin, G.R.

“…Am 3+, Cm 3+ and Eu 3+ with citric acid formed MCit and MCit 2 3 - and with EDTA + citric acid, M(EDTA)(Cit) 4− complexes at 6.60 m (NaClO 4). Positive…”
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Complexation thermodynamics and the structure of the binary and the ternary complexes of Am3+, Cm3+ and Eu3+ with IDA and EDTA+IDA by Choppin, G.R., Thakur, P., Mathur, J.N.

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Rocky Flats Closure: the Role of Models in Facilitating Scientific Communication With Stakeholder Groups by Clark, D.L., Choppin, G.R., Dayton, C.S., Janecky, D.R., Lane, L.J., Paton, I.

“…The Rocky Flats Environmental Technology Site (RFETS) was a U.S. Department of Energy (DOE) environmental cleanup site for a previous manufacturing plant that…”
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Polymerization study of o-Si(OH) 4 and complexation with Am(III), Eu(III) and Cm(III) by Thakur, P., Singh, D.K., Choppin, G.R.

“…Am 3+, Cm 3+ and Eu 3+ at pH 3.50 formed 1:1 complexes with OSi ( OH ) 3 - with stability constant value of 8.02 ± 0.10, 7.78 ± 0.08 and 7.81 ± 0.11,…”
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Complexation and the laser luminescence studies of Eu(III), Am(III), and Cm(III) with EDTA, CDTA, and PDTA and their ternary complexation with dicarboxylates by Thakur, P., Conca, J.L., Van De Burgt, L.J., Choppin, G.R.

“…Spectroscopy has been used to determine the number of coordinated water molecules bound to Eu(III) and Cm(III) in a series of binary complexes of…”
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Radionuclide separations in radioactive waste disposal by Choppin, G R, Morgenstern, A

“…Radionuclide separation processes that have been used successfully in the past as well as recent developments in separation techniques are discussed with…”
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Complexation thermodynamics and the structure of the binary and the ternary complexes of Am3+, Cm3+ and Eu3+ with CDTA and CDTA+IDA by Thakur, P., Mathur, J.N., Choppin, G.R.

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Spectroscopic study of lanthanide(III) complexes with carboxylic acids by Wang, Z.-M., van de Burgt, L.J., Choppin, G.R.

“…The complexation of trivalent lanthanides with aromatic (mellitic, pyromellitic, hemimellitic, trimellitic, trimesic, phthalic, isophthalic, terephthalic and…”
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Spectroscopic study of lanthanide(III) complexes with aliphatic dicarboxylic acids by Wang, Z.-M, van de Burgt, L.J, Choppin, G.R

“…The complexation of trivalent lanthanides with aliphatic dicarboxylic acids (malonic, succinic, glutaric and adipic) were studied at 25°C and 0.1 M (NaClO 4)…”
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Separations Chemistry for Actinide Elements: Recent Developments and Historical Perspective by Nash, Kenneth L., Choppin, Gregory R.

“…With the end of the cold war, the principal mission in actinide separations has changed from production of plutonium to cleanup of the immense volume of…”
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Carbon-13 NMR spectroscopic studies on chemically modified and unmodified synthetic and natural humic acids by Sachs, S, Bubner, M, Schmeide, K, Choppin, G.R, Heise, K.H, Bernhard, G

“…Carbon-13 cross-polarization magic-angle spinning nuclear magnetic resonance spectroscopy ( 13C-CP/MAS-NMR) was applied to study the chemical modification…”
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Complexation of NpO 2+ by aromatic polycarboxylates by Choppin, G.R., Stout, B.E., Pagès, M.

“…The complexation of Np(V) with aromatic polycarboxylic acids was studied by spectrophotometry at 1 M ionic strength (NaClO 4) and 23°C. The stability constants…”
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Luminescence study of complexation of europium and dicarboxylic acids by Barthelemy, Pierre P, Choppin, Gregory R

“…Luminescence lifetime measurements of Eu(III) have been used to study the hdration of Eu(III) when complexed by alkane-dicarboxylate ligands. In its…”
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Interaction of metal cations with heteropolytungstate ions SiW sub 12 O sub 40 sup 4 minus and P sub 2 W sub 18 O sub 62 sup 6 minus by Saito, Akira, Choppin, G.R.

“…The stability constants for the binding of the metal cations Ca{sup 2+}, Eu{sup 3+}, Th{sup 4+}, and UO{sub 2}{sup 2+} to two heteropolytungstates, SiW{sub…”
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