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Speciation and migration of 129I in soil profiles
Luo, MY (Luo, Maoyi)[ 3 ]; Hou, XL (Hou, Xiaolin)[ 1,2,4 ]; Zhou, WJ (Zhou, Weijian)[ 1,2 ]; He, CH (He, Chaohui)[ 3 ]; Chen, N (Chen, Ning)[ 1,2 ]; Liu, Q (Liu, Qi)[ 1,2 ]; Zhang, LY (Zhang, Luoyuan)[ 1,2,4 ]
Source PublicationJournal of Environmental Radioactivity

A method has been developed for speciation analysis of ultra low level I-129 in soil using sequential extraction combined with coprecipitation for separation of carrier free iodine and AMS measurement of I-129. Two loess profiles collected from northwest China were analyzed for species of I-129 and I-127. Similar partitioning of I-129 and I-122 was observed in the loess profiles, the distribution of iodine isotopes followed an order of organic > leachable > reducible > residue. The I-129 concentrations and I-129/I-127 ratios decreased exponentially with the depth, and 2 orders of magnitude lower in the deepest layer (60 and 90 cm) compared with the top layer, indicating a significant contribution of anthropogenic input in the upper layer, and high retention of I-129 in soil. The mobility of I-129 in different fractions decreased in an order of leachable > organic > oxides > residue. The results suggest that migration of iodine downwards in the soil profile is a slow process; the oxides and residue are the less mobile fractions of iodine.

KeywordIodine-129 Fractionation Ams Speciation Analysis Loess Mobility
Indexed BySCI ; EI
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Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHou, XL (Hou, Xiaolin)[ 1,2,4 ]
Affiliation1.Xi’an AMS Center and KLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China;
3.Center for Nuclear Technologies, Technical University of Denmark, Risø Campus, DK-4000 Roskilde, Denmark
Recommended Citation
GB/T 7714
Luo, MY ,Hou, XL ,Zhou, WJ ,et al. Speciation and migration of 129I in soil profiles[J]. Journal of Environmental Radioactivity,2013,118:30-39.
APA Luo, MY .,Hou, XL .,Zhou, WJ .,He, CH .,Chen, N .,...&Zhang, LY .(2013).Speciation and migration of 129I in soil profiles.Journal of Environmental Radioactivity,118,30-39.
MLA Luo, MY ,et al."Speciation and migration of 129I in soil profiles".Journal of Environmental Radioactivity 118(2013):30-39.
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