FN Archimer Export Format
PT J
TI Measurement of the isotopic composition of dissolved iron in the open ocean
BT 
AF LACAN, F.
   RADIC, A.
   JEANDEL, C.
   POITRASSON, F.
   SARTHOU, Geraldine
   PRADOUX, C.
   FREYDIER, R.
AS 1:1,2;2:1;3:1,2;4:3;5:4,5;6:1,2;7:3;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 LEGOS, Observatoire Midi-Pyrenees, Universite de Toulouse, Toulouse, France.
   LEGOS, CNRS, Toulouse, France.
   LMTG, CNRS, Toulouse, France.
   LEMAR, Universite´ Europe´enne de Bretagne, Rennes, France
   LEMAR, CNRS, Plouzane, France.
C2 UNIV TOULOUSE, FRANCE
   CNRS, FRANCE
   CNRS, FRANCE
   UEB, FRANCE
   CNRS, FRANCE
IF 2.959
TC 59
UR https://archimer.ifremer.fr/doc/00202/31374/29781.pdf
LA English
DT Article
CR AMANDES I
   MD 166 / BONUS-GOODHOPE
   MD 168 / AMOCINT (IMAGES XVII)
BO Unknown
   Marion Dufresne
DE ;MC ICP MS;chelating resin;southern ocean;fractionation;seawater;earth;separation;accuracy;pacific;FE(III)
AB This work demonstrates for the first time the feasibility of the measurement of the isotopic composition of dissolved iron in seawater for a typical open ocean Fe concentration range (0.1-1 nM). It also presents the first data of this kind. Iron is preconcentrated using a Nitriloacetic Acid Superflow resin and purified using an AG1x4 anion exchange resin. The isotopic ratios are measured with a MC-ICPMS Neptune, coupled with a desolvator (Aridus II), using a Fe-57-Fe-58 double spike mass bias correction. Measurement precision (0.13%, 2SD) allows resolving small iron isotopic composition variations within the water column, in the Atlantic sector of the Southern Ocean (from delta Fe-57 = -0.19 to +0.32 parts per thousand). Isotopically light iron found in the Upper Circumpolar Deep Water is hypothesized to result from organic matter remineralization. Shallow samples suggest that, if occurring, an iron isotopic fractionation during iron uptake by phytoplankton is characterized by a fractionation factor, such as: vertical bar Delta Fe-57((plankton-seawater))vertical bar < 0.48 parts per thousand.
PY 2008
PD DEC
SO Geophysical Research Letters
SN 0094-8276
PU Amer Geophysical Union
VL 35
IS L24610
UT 000262168300003
BP 1
EP 5
DI 10.1029/2008GL035841
ID 31374
ER

EF