TY - JOUR
T1 - Speciation of iodine (127I and 129I) in lake sediments
AU - Englund, E.
AU - Aldahan, A.
AU - Hou, X. L.
AU - Petersen, R.
AU - Possnert, G.
N1 - Funding Information:
This study was made possible through financial support from Carl Tryggers Foundation for Scientific Research and the Swedish Radiation Protection Authority . The authors (X.L. Hou and R. Petersen) also like to thank the V.K. Rasmussen Foundation for part of the financial support.
PY - 2010/4
Y1 - 2010/4
N2 - Fallout of anthropogenic 129I at northern Europe has been occurring since the early 1950. Nevertheless, it is still unclear where and how this radioactive iodine is incorporated in the surface environment. In order to elucidate part of this problem, we here present an investigation of the occurrence modes of 129I in varved lake sediments, collected in central Sweden and cover the period 1941-2007. Using a sequential extraction method, the results of 129I and 127I indicate that the partitioning of the two isotopes were more or less similar, despite the large gradient of 129I within the sediment. Organic bound iodine was the dominant form over other fractions, while iodine bound to metal oxides was negligible. The leachable part constituted 5-6% of the iodine. Diagenetic influence seems to exert a limited effect on distribution of iodine in the examined sediment section.
AB - Fallout of anthropogenic 129I at northern Europe has been occurring since the early 1950. Nevertheless, it is still unclear where and how this radioactive iodine is incorporated in the surface environment. In order to elucidate part of this problem, we here present an investigation of the occurrence modes of 129I in varved lake sediments, collected in central Sweden and cover the period 1941-2007. Using a sequential extraction method, the results of 129I and 127I indicate that the partitioning of the two isotopes were more or less similar, despite the large gradient of 129I within the sediment. Organic bound iodine was the dominant form over other fractions, while iodine bound to metal oxides was negligible. The leachable part constituted 5-6% of the iodine. Diagenetic influence seems to exert a limited effect on distribution of iodine in the examined sediment section.
KW - Iodine-129
KW - La Hague
KW - Nuclear reprocessing
KW - Sediment
KW - Sellafield
KW - Speciation
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U2 - 10.1016/j.nimb.2009.10.109
DO - 10.1016/j.nimb.2009.10.109
M3 - Article
AN - SCOPUS:77950206377
SN - 0168-583X
VL - 268
SP - 1102
EP - 1105
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 7-8
ER -