Thesis for the Degree of Doctor of Philosophy - DTU Orbit

More documents

Recommendations

Info

°C, and then ground to powder. After mixing with Niobium powder, the AgI samples were pressed into a copper holder and the measurement of 129 I/ 127 I ratios was carried out using the AMS system at the Tandem Laboratory, Uppsala University (5MV Pelletron, National Electrostatic Corporation, USA) at a terminal voltage of 3.5 MV. The 129 I NIST-SRM 4949C standard with 129 I/ 127 I ratio of 1.1×10 -11 was used (Alfimov 2005). Blank samples were prepared using the same procedure as for samples for total iodine, iodide and iodate. The measured 129 I/ 127 I ratio in blank samples (1.5±0.5×10 -13 ) was two orders of magnitude lower than that in samples (0.5-15×10 -11 ), and was subtracted from the measured value in the samples. Instrumental background for the AMS system was controlled by measurement of natural AgI (iodargyrite), which gave a 129 I/ 127 I ratio of 4×10 -14 . 2.11 127 I preparation for ICP-MS measurements. For 127 I determination, around 2 mL of the solutions from various fractions was diluted to 20 mL with 1% NH3, and Cs (as CsCl) was added as internal standard. The concentration of 127 I was determined using an X Series II ICP MS (Thermo Electron Corporation). 34
Fig. 6 Sequential extraction procedure applied for 129 I and 127 I partition in soil and sediment TMAH- tetramethylammonium hydroxide; RT-room temperature 35
Page 1 and 2: Chemical Speciation Analysis and En
Page 3 and 4: Thesis for the Degree of Doctor of
Page 5 and 6: Abstract This thesis deals with che
Page 7 and 8: environment since they reflect the
Page 9 and 10: organiske jodformer. Adsorption af
Page 11 and 12: None of this would have been possib
Page 13 and 14: Abbreviations and acronyms b+ - pos
Page 15 and 16: 3.1 Analytical Development………
Page 17 and 18: Table 1 Some properties of iodine P
Page 19 and 20: In soils/sediments iodine occurs as
Page 21 and 22: Table 2 Nuclear properties of iodin
Page 23 and 24: Liquid scintillation counting (LSC)
Page 25 and 26: The bioavailability of radioactive
Page 27 and 28: data (Englund et al., 2010; Hou et
Page 29 and 30: 2. Analytical procedures used in th
Page 31 and 32: 2.3 Quantification of total iodine
Page 33 and 34: Fig. 5 Quantification of total iodi
Page 35: iodate were measured by counting 12
Page 39 and 40: a Fig. 8 Calibration curve for (a)
Page 41 and 42: experiment was subjected to combust
Page 43 and 44: Table 7 Adsorption of iodine specie
Page 45 and 46: numbers 11-14), which is about the
Page 47 and 48: marine environment from nuclear fue
Page 49 and 50: 127 I - (ppb) 127 IO3 - (ppb) a b 1
Page 51 and 52: Although the oxygen concentration d
Page 53 and 54: 129 I TBq 2,00E+00 1,80E+00 1,60E+0
Page 55 and 56: • Adsorption of iodine species on
Page 57 and 58: Reference Aldahan A, Kekli A, Possn
Page 59 and 60: Fuge R& Johnson C. 1986. The geoche
Page 61 and 62: Lo´pez-Gutie´rrez JM, Garcı ´a-
Page 63 and 64: Shinohara K. 2004. Measurement and
Page 65 and 66: http://www.irsn.fr/EN/news/Document
Page 67 and 68: Review Analytica Chimica Acta 632 (
Page 69 and 70: Table 1 Nuclear properties and prod
Page 71 and 72: Fig. 2. Liquid discharges of 129 I
Page 73 and 74: Fig. 5. Schematic diagram and pictu
Page 75 and 76: 129 I in iodide and iodate is then
Page 77 and 78: Fig. 8. Diagram of air sampler for
Page 79 and 80: Fig. 10. Iodine L3-edge (a) and K-e
Page 81 and 82: analysis of 129 I in water sample a
Page 83 and 84: Yi P, Aldahan A, Hansen V, Possnert
Page 85 and 86: FIGURE 1. Sampling sites (the red s
Page 87 and 88:
FIGURE 3. Horizontal distribution o
Page 89 and 90:
FIGURE 5. Time series data of 129 I
Page 91 and 92:
Environmental Science & Technology
Page 93 and 94:
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 and 146:
O’Dowd, C.; Jimenez, J. L.; Bahre
Page 147 and 148:
Iodine ( 129 I and 127 I) speciatio
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)
show all

Thesis for the Degree of Doctor of Philosophy - DTU Orbit

Create successful ePaper yourself

Delete template?

Save as template?