FN Archimer Export Format
PT J
TI Nuclear field shift effect in isotope fractionation of thallium
BT 
AF FUJII, Toshiyuki
   MOYNIER, Frederic
   AGRANIER, Arnaud
   PONZEVERA, Emmanuel
   ABE, Minori
   UEHARA, Akihiro
   YAMANA, Hajimu
AS 1:1;2:2,3;3:4;4:5;5:6;6:1;7:1;
FF 1:;2:;3:;4:PDG-REM-GM-LGM;5:;6:;7:;
C1 Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan.
   Washington Univ, Dept Earth & Planetary Sci, St Louis, MO 63130 USA.
   Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA.
   IUEM, UMR 6538, F-29820 Plouzane, France.
   IFREMER, Dept Marine Geosci, Lab Geochim & Metallogenie, F-29280 Plouzane, France.
   Tokyo Metropolitan Univ, Grad Sch Sci & Engn, Dept Chem, Hachioji, Tokyo 1920397, Japan.
C2 UNIV KYOTO, JAPAN
   UNIV WASHINGTON, USA
   UNIV WASHINGTON, USA
   UBO, FRANCE
   IFREMER, FRANCE
   UNIV TOKYO METROPOLITAN, JAPAN
SI BREST
SE PDG-REM-GM-LGM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
IF 1.415
TC 12
UR https://archimer.ifremer.fr/doc/00135/24624/22691.pdf
LA English
DT Article
DE ;Thallium;Isotope fractionation;Redox;Ligand exchange;Nuclear field shift;Ab initio calculation
AB Environmental transport of Tl is affected by redox reaction between Tl(I) and Tl(III) and ligand exchange reactions of them. In order to deepen the knowledge of Tl chemistry, we investigated fractionation of Tl stable isotopes (Tl-203 and Tl-205) in a chemical exchange system. Tl isotopes were fractionated in a liquid-liquid extraction system, in which aqueous and organic phases are hydrochloric acid solution and dichloroethane including a crown ether, respectively. After purification by ion-exchange chemistry, the isotope ratio of Tl-205/Tl-203 in equilibrated aqueous phase was measured precisely by multiple-collector-inductively-coupled-plasma-mass-spectrometry. A large isotope fractionation > 1 aEuro degrees was found. Electronic structures of possible Tl species (hydrated Tl+, Tl3+, and Tl chlorides) were calculated by ab initio methods, and the isotope fractionation factor was theoretically obtained. The isotope fractionation via intramolecular vibrations was calculated to be much smaller than the experimental result. The isotope fractionation via isotopic change in nuclear volume, named the nuclear field shift effect, was calculated to be > 1 aEuro degrees in Tl(I)-Tl(III) redox systems and/or ligand exchange systems of Tl(III). The nuclear field shift effect was found to be the major origin of Tl isotope fractionation.
PY 2013
PD APR
SO Journal Of Radioanalytical And Nuclear Chemistry
SN 0236-5731
PU Springer
VL 296
IS 1
UT 000316569600042
BP 261
EP 265
DI 10.1007/s10967-012-2181-4
ID 24624
ER

EF