Thesis for the Degree of Doctor of Philosophy - DTU Orbit

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Paper VI Hansen Violeta. 2011. Iodine ( 129 I and 127 I) speciation in freshwater samples from Denmark and Sweden, Manuscript
Iodine ( 129 I and 127 I) speciation in lakes from Denmark and Sweden Violeta Hansen Risø National Laboratory for Sustainable Energy NUK-202, Technical University of Denmark, DK-4000 Roskilde, Denmark Abstract We here present the first data on the abundance of the iodide and iodate and organic iodine species of the 129 I and 127 I isotopes in lakes located in south Jutland (Denmark) and southeast Sweden. Excepting the Skærsø Lake, were the organic iodine – 127 accounts for 50% of the total iodine, the iodide (both 129 I and 127 I) is the predominant species form in surface water of the studied lakes. Iodine-129 concentrations in the lakes ranged from 1.3 – 12.8 ×10 9 at/L and show elevated concentrations in lakes located in southwest Jutland (Denmark), near the North Sea. Further the 129 I concentration in the studied lakes may be dominated by the continuous supply to the marine environment from the nuclear fuel reprocessing plants (La Hague (France) and Sellafield (U.K.)) and subsequent redistribution through precipitation and to a lesser extent to atmospheric releases from reprocessing plants, volatilization from soils and plants and release for lakes sediments. Key words: 129 I, 127 I, chemical speciation, lake, AMS, ICP-MS 1. Introduction In nature iodine – 129 occurs naturally, but mainly originates from anthropogenic nuclear activities such as nuclear reprocessing facilities, nuclear weapons testing and accidents associated with nuclear power plants. Its concentration has been and is still increasing in the environment since the beginning 1
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Chemical Speciation Analysis and En
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Thesis for the Degree of Doctor of
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Abstract This thesis deals with che
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environment since they reflect the
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organiske jodformer. Adsorption af
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None of this would have been possib
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Abbreviations and acronyms b+ - pos
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3.1 Analytical Development………
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Table 1 Some properties of iodine P
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In soils/sediments iodine occurs as
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Table 2 Nuclear properties of iodin
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Liquid scintillation counting (LSC)
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The bioavailability of radioactive
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data (Englund et al., 2010; Hou et
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2. Analytical procedures used in th
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2.3 Quantification of total iodine
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Fig. 5 Quantification of total iodi
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iodate were measured by counting 12
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Fig. 6 Sequential extraction proced
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a Fig. 8 Calibration curve for (a)
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experiment was subjected to combust
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Table 7 Adsorption of iodine specie
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numbers 11-14), which is about the
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marine environment from nuclear fue
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127 I - (ppb) 127 IO3 - (ppb) a b 1
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Although the oxygen concentration d
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129 I TBq 2,00E+00 1,80E+00 1,60E+0
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• Adsorption of iodine species on
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Reference Aldahan A, Kekli A, Possn
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Fuge R& Johnson C. 1986. The geoche
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Lo´pez-Gutie´rrez JM, Garcı ´a-
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Shinohara K. 2004. Measurement and
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http://www.irsn.fr/EN/news/Document
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Review Analytica Chimica Acta 632 (
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Table 1 Nuclear properties and prod
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Fig. 2. Liquid discharges of 129 I
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Fig. 5. Schematic diagram and pictu
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129 I in iodide and iodate is then
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Fig. 8. Diagram of air sampler for
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Fig. 10. Iodine L3-edge (a) and K-e
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analysis of 129 I in water sample a
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Yi P, Aldahan A, Hansen V, Possnert
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FIGURE 1. Sampling sites (the red s
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FIGURE 3. Horizontal distribution o
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FIGURE 5. Time series data of 129 I
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Environmental Science & Technology
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prepared using KI and KIO3. No diff
Page 95 and 96: of their contribution to the Baltic
Page 97 and 98: Fig. S-1 Sampling sites (the red so
Page 99 and 100: Fig. S-3 Vertical distribution of I
Page 101 and 102: Fig. S-5 Marine discharges function
Page 103 and 104: Fig.S-7 Relationship between I-129
Page 105 and 106: Table S-1 Results of I-129 and I-12
Page 107 and 108: S17
Page 109 and 110: Paper III Hansen,V., Yi, P., Hou, X
Page 111 and 112: conversion process between iodide a
Page 113 and 114: Table 1 Analytical results of 129 I
Page 115 and 116: August April I-129 iodide ( 10 8 at
Page 117 and 118: References Aldahan A, Kekli A, Poss
Page 119 and 120: Partition of iodine ( 129 I and 127
Page 121 and 122: Norway (Table 1). CTD-casts with ox
Page 123 and 124: 5. Discussion 5.1. Separation of hu
Page 125 and 126: In the present study 40e60% of 129
Page 127 and 128: Hutta, M., Gora, R., 2003. Novel st
Page 129 and 130: Analysis of 129 I and 127 I in arch
Page 131 and 132: et al., 2002). Due to the fact that
Page 133 and 134: espectively. The iodine was leached
Page 135 and 136: salinities in the same area. Apart
Page 137 and 138: North Sea. 129 I/ 127 I ratios in w
Page 139 and 140: Table 2 Analytical results of 129-I
Page 141 and 142: 129 I/ 127 I 1,40E-07 1,20E-07 1,00
Page 143 and 144: References Aldahan A, Englund E, Po
Page 145: O’Dowd, C.; Jimenez, J. L.; Bahre
Page 149 and 150: water in winter by molecular oxygen
Page 151 and 152: 0.2 M KNO3. The effluent and the wa
Page 153 and 154: maximum values is at 0.03-0.06×10
Page 155 and 156: into the English Channel from the L
Page 157 and 158: References Aldahan A, Kekli A, Poss
Page 160 and 161: Risø-PhD-81(EN)
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Thesis for the Degree of Doctor of Philosophy - DTU Orbit

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