Zobrazeno 1 - 10 of 103 pro vyhledávání: '"G. R. CHOPPIN"'
1
Effects of pH, Ionic Strength, Temperature, and Complexing Anions on the Sorption Behavior of Cobalt on Hydrous Silica
Autor: P. N. Pathak, G. R. Choppin
Publikováno v: Soil and Sediment Contamination: An International Journal. 18:590-602
Sorption of Co(II) on SiO2.xH2O (silica gel) has been investigated as a function of time, amount of silica gel (0.10–1.00g), cobalt concentration (5.00 × 10−5–1.20 × 10−3 M), ionic strength (0.20–1.40 M NaClO4), pH (∼6.80–10.80), and
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d4a6a7d848a89e2a1da4c91410957c9
https://doi.org/10.1080/15320380903085709
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2
Thermodynamic and Spectroscopic Studies of Lanthanides(III) Complexation with Polyamines in Dimethyl Sulfoxide
Autor: G. R. Choppin, Zhiguo Wang, M. Tolazzi, Andrea Melchior, P. Di Bernardo, R. Portanova, Pier Luigi Zanonato
Publikováno v: Inorganic Chemistry. 47:1155-1164
The thermodynamic parameters of complexation of Ln(III) cations with tris(2-aminoethyl)amine (tren) and tetraethylenepentamine (tetren) were determined in dimethyl sulfoxide (DMSO) by potentiometry and calorimetry. The excitation and emission spectra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec8061c4fabc73d4130d9c8f7421a3cc
https://doi.org/10.1021/ic701337u
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5
Extraction of HNO3 with solutions of zirconium salt of dibutyl hydrogen phosphate in 30% tributyl phosphate and in xylene
Autor: O. V. Shmidt, E. N. Mishin, L. G. Mashirov, G. R. Choppin, D.N. Suglobov, B. Ya. Zilberman, Yu. V. Palenik, Yu. S. Fedorov
Publikováno v: Radiochemistry. 48:267-271
Zirconium salt of dibutyl hydrogen phosphate (ZS HDBP) dissolved in xylene or 30% tributyl phosphate (TBP) + xylene mixture extracts noticeable amounts of HNO3 at its low concentrations in the aqueous phase, when extraction of HNO3 with straight HDBP
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ba58593f21e507d14b7843819eea8bb
https://doi.org/10.1134/s1066362206030118
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6
Complexation/speciation studies of Ni2+ion with ortho silicic acid in perchlorate media
Autor: P. N. Pathak, G. R. Choppin
Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 267:309-314
The complexation behavior of Ni2+with ortho-silicic acid (o-SA) has been studied as a function of ionic strength (I) from 0.20 to 1.00M (NaClO4) at pcH 4.55±0.05 and 25 °C by a solvent extraction technique with bis(2-ethylhexyl) phosphoric acid (HD
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e37c65841aa951d710a00e949c8c806a
https://doi.org/10.1007/s10967-006-0049-1
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7
Manpower Requirements and Education in Nuclear Science: An International Perspective
Autor: R. Zeisler, S. B. Clark, S. J. Parry, G. R. Choppin, P. R. Danesi, M. Rossbach, C. Williamson, Zhifang Chai, S. F. Heller- Zeisler
Publikováno v: Journal of Radioanalytical and Nuclear Chemistry. 263:103-106
Since the 1970's, concern about the training of radiochemists in the US has been increasing along with the age of nuclear work force, while the number of academic institutions offering undergraduate courses and the number of radiochemistry faculty ha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8fc75e9a0068327ddfc0a8ce3e5f1362
https://doi.org/10.1007/s10967-005-0020-6
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