Speciation of iodine (127I and 129I) in lake sediments

E. Englund; A. Aldahan; X. L. Hou; R. Petersen; G. Possnert

doi:10.1016/j.nimb.2009.10.109

Speciation of iodine (¹²⁷I and ¹²⁹I) in lake sediments

E. Englund, A. Aldahan, X. L. Hou, R. Petersen, G. Possnert

Department of Geoscience

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1102-1105
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	268
Issue number	7-8
DOIs	https://doi.org/10.1016/j.nimb.2009.10.109
Publication status	Published - Apr 2010

Keywords

Iodine-129
La Hague
Nuclear reprocessing
Sediment
Sellafield
Speciation

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/j.nimb.2009.10.109

Cite this

@article{bd321ca5976a42f3a49fa20a00703454,

title = "Speciation of iodine (127I and 129I) in lake sediments",

abstract = "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.",

keywords = "Iodine-129, La Hague, Nuclear reprocessing, Sediment, Sellafield, Speciation",

author = "E. Englund and A. Aldahan and Hou, {X. L.} and R. Petersen and G. Possnert",

note = "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.",

year = "2010",

month = apr,

doi = "10.1016/j.nimb.2009.10.109",

language = "English",

volume = "268",

pages = "1102--1105",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

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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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