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

被引：29

作者：

Englund, E. ^{[1
]}

Aldahan, A. ^{[2
,5
]}

Hou, X. L. ^{[3
,4
]}

Petersen, R. ^{[3
]}

Possnert, G. ^{[1
]}

机构：

[1] Uppsala Univ, Tandem Lab, SE-75120 Uppsala, Sweden

[2] Uppsala Univ, Dept Earth Sci, SE-75236 Uppsala, Sweden

[3] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark

[4] CAS, Inst Earth Environm, SKLLQG, Xian, Peoples R China

[5] United Arab Emirates Univ, Dept Geol, Al Ain, U Arab Emirates

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2010年 / 268卷 / 7-8期

关键词：

Iodine-129; Speciation; Sediment; Nuclear reprocessing; Sellafield; La Hague; TRANSFORMATIONS; SEAWATER; SOIL;

D O I：

10.1016/j.nimb.2009.10.109

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Fallout of anthropogenic I-129 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 I-129 in varved lake sediments, collected in central Sweden and cover the period 1941-2007. Using a sequential extraction method, the results of I-129 and I-127 indicate that the partitioning of the two isotopes were more or less similar, despite the large gradient of I-129 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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1102 / 1105

页数：4

共 16 条

[1] 129I anthropogenic budget:: Major sources and sinks [J].