Pre- and post-Chernobyl accident levels of 129I and 137Cs in the Southern Baltic Sea by brown seaweed Fucus vesiculosus

Gómez-Guzmán, J.M.; Holm, E.; Enamorado-Báez, S.M.; Abril, J. A.; Pinto-Gómez, A.R.; López-Gutiérrez, J. M.; García-León, M.

doi:10.1016/j.jenvrad.2012.08.007

Cited by 7 publications

(4 citation statements)

References 46 publications

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“…The pre-anthropogenic 129 I/ 127 I ratio in marine iodine has typically been reported to be (1.50 ± 0.15) × 10 −12 , which could be considered the initial input value for 129 I groundwater dating 15 , 16 . Information on past variations in isotopic ratios in seawater is stored in coral 17 , 18 and algae samples 15 , 19 , 20 . Moran et al 16 reported the iodine isotopic ratio of old seawater from deep marine sediments.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of 129I groundwater dating calibrated by both 81Kr and 4He for the assessment of deep geological repositories in Japan

Ohta,

Hasegawa,

Jiang

et al. 2024

Sci Rep

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Iodine-129, which is a promising tracer for dating old groundwater, has been used as a tracer for deep upwelling groundwater. The nuclide is expected to be one of the key factors for site selection for high-level radioactive waste disposal, which is a global societal issue. The pre-anthropogenic 129I/127I ratio for marine iodine is (1.50 ± 0.15) × 10−12, which could be considered the initial value for 129I dating. This study identifies the challenges in groundwater age dating using 129I/127I. We measured the ratios of 129I/127I and 81Kr/Kr and concentration of 4He in groundwater from boreholes on the northern coast of Japan. The 129I dating results were not coincident with the other groundwater dating results. The iodine in the groundwater was inferred to be released in situ from marine organisms in sediments of various ages. We estimated that the primordial iodine ratio originating from seawater was ~ 1 × 10–13 (8 × 10–14 ~ 2 × 10–13). The groundwater age deduced from the 129I/127I ratio using this value agrees with other groundwater dating results.

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Section: Introductionmentioning

confidence: 99%

Feasibility of 129I groundwater dating calibrated by both 81Kr and 4He for the assessment of deep geological repositories in Japan

Ohta,

Hasegawa,

Jiang

et al. 2024

Sci Rep

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“…[5], [34], [41], [42]. Predominant wind in Lithuania is mostly westwards, meaning that gaseous 129 I re-emitted from the Baltic Sea and North Sea can be transported from the Baltic Sea and deposit to the terrestrial system in Lithuania [36], [43].…”

Section: Distribution and Sources Of Iodine Isotopesmentioning

confidence: 99%

“…The activity and atomic ratios of long-lived radionuclides are useful parameters for identifying their origin because their values depend on the sources and generation processes [1][2][3][4][5]. Among them 129 I,…”

Section: Introductionmentioning

confidence: 99%

Distribution and source of 129 I, 239 ,240 Pu, 137 Cs in the environment of Lithuania

Ežerinskis

Hou

Druteikienė

et al. 2016

Journal of Environmental Radioactivity

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“…The long-lived artificial radioisotope 137 Cs (half life 30.2 years) is the main hazardous radionuclide of several produced in nuclear fission processes [1] and has become a focus of serious attention in addition to 90 Sr and 239,240 Pu, since they are the most abundant anthropogenic radionuclides in the marine environment and can lead to the highest radiation doses to humans and marine biota, such as fish and  Corresponding author. E-mail address: muslim.ir@undip.ac.id DOI: http://dx.doi.org/10.17146/aij.2017.588 algae [2][3][4].…”

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confidence: 99%

Behavior of <sup>137</sup>Cs Activity in the Sayung Waters, Demak, Indonesia

2017

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The behavior of anthropogenic radionuclide 137 Cs in the water and sediment has been examined with regard to particle size, organic sediment, and other physical conditions in the Sayung estuarine waters of Demak. Previously, this estuary was used as shrimp culture brackish water ponds that were affected by serious erosion and intrusion. Furthermore, this regency rapidly industrialized over the last three decades. The activities of 137 Cs in the six stations in water and sediment were in the 0.0116-0.4509 mBq/L and 0.3747-1.2442 Bq/kg ranges with mean activities of 0.2278 mBq/L and 0.8594 Bq/kg, respectively, depending on the prevailing physicochemical regime at the sampling station. The highest activities of aqueous 137 Cs occurred in station 2 but the highest in sediment occurred in station 6 located closed to the main land of Sayung. Fast current effectively diluted 137 Cs as a conservative radionuclide in seawater, thus the activity of 137 Cs in seawater decreased when the current speed increased. This effect was caused in part by industrial pollutants that adsorbed 137 Cs and precipitated onto the surface sediment. Organic matters and clay materials in sediment were not significantly effective at binding 137 Cs in Sayung waters in the industrial coastal area, but the correlation increased in open areas separated by a breakwater (second group stations) and the location further from the beach or in open sea. This indicates that industrial pollutants are more effective at binding 137 Cs than organic matters and clay materials. Fine grain size sediment is also more ineffective at binding 137 Cs; it may be caused by the sediment's high total organic matter content.

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Pre- and post-Chernobyl accident levels of 129I and 137Cs in the Southern Baltic Sea by brown seaweed Fucus vesiculosus

Cited by 7 publications

References 46 publications

Feasibility of 129I groundwater dating calibrated by both 81Kr and 4He for the assessment of deep geological repositories in Japan

Feasibility of 129I groundwater dating calibrated by both 81Kr and 4He for the assessment of deep geological repositories in Japan

Distribution and source of 129 I, 239 ,240 Pu, 137 Cs in the environment of Lithuania

Behavior of <sup>137</sup>Cs Activity in the Sayung Waters, Demak, Indonesia

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