Use of 129I and 137Cs in soils for the estimation of 131I deposition in Belarus as a result of the Chernobyl accident

Mironov, V.P.; Kudrjashov, V. P.; Yiou, F.; Raisbeck, G. M.

doi:10.1016/s0265-931x(01)00080-7

Cited by 58 publications

(41 citation statements)

References 14 publications

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“…For 137 Cs, the pre-Chernobyl inventories can also be calculated from data given in reports by UNSCEAR (1982UNSCEAR ( , 1993UNSCEAR ( , 2000. From these data one expects for a geographical latitude of 51 N a decay corrected 137 Cs fall-out for the 1980s between 4.6 kBq m À2 and 5.2 kBq m À2 , much closer to our estimates than to those by Mironov et al (1999Mironov et al ( , 2002 and Straume et al (2006). However, the preChernobyl fall-out of 137 Cs does not affect the conclusions regarding the fall-out due to the Chernobyl accident, the latter being much higher than the former.…”

Section: Resultssupporting

confidence: 85%

“…Here, we repeat some of this discussion regarding the works of Mironov et al (1999Mironov et al ( , 2002 and Straume et al (1996) and extend the discussion to the work of Straume et al (2006). Mironov et al (1999Mironov et al ( , 2002 Straume et al (2006). Two arguments were used.…”

Section: Resultsmentioning

confidence: 85%

“…Thus, it turns out that also in Eastern Europe a substantial amount of 129 I from emissions from reprocessing plants has been deposited. For Eastern Europe just a few other estimates of the preChernobyl inventories exist (Straume et al, 1996;Reithmeier et al, 2002;Mironov et al, 1999Mironov et al, , 2002. Robl et al (1997) and Pietrzak-Flis et al (2003) assumed the same pre-Chernobyl contribution to 129 I as Straume et al (1996).…”

Section: Resultsmentioning

confidence: 99%

“…(4) is surely within the uncertainty of the slope of the correlation line according to Equation (3) and shows that the so-called Western Cloud which contaminated the region investigated contained widely unfractionated Chernobyl debris. Mironov et al (2002) reported a value of 2.75 Â 10 À7 for the 129 I/ 137 Cs activity ratio at the time of the explosion of the Chernobyl Block 4. In that part of Northern Ukraine which was affected by the Western Cloud we find a significantly lower ratio of 1.8 Â 10 À7 .…”

Section: Resultsmentioning

confidence: 99%

“…Straume et al (1996Straume et al ( , 2006, Robl et al (1997), and Mironov et al (1999Mironov et al ( , 2002 investigated the situation in Belarus, Pietrzak-Flis et al (2003) in Poland. Endo et al (2008) used 129 I for the retrospective dosimetry of the inhabitants of Dolon near Semipalatinsk in Kazakhstan.…”

Section: Introductionmentioning

confidence: 99%

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Retrospective dosimetry of Iodine-131 exposures using Iodine-129 and Caesium-137 inventories in soils – A critical evaluation of the consequences of the Chernobyl accident in parts of Northern Ukraine

Michel

Daraoui

Górny

et al. 2015

Journal of Environmental Radioactivity

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a b s t r a c tThe radiation exposure of thyroid glands due to 131 I as a consequence of the Chernobyl accident was investigated retrospectively based on 129 I and 137 Cs inventories in soils in Northern Ukraine. To this end, soil samples from 60 settlements were investigated for 129 I, 127 I, and 137 Cs by AMS, ICP-MS and gammaspectrometry, respectively. Sampling was performed between 2004 und 2007.In those parts of Northern Ukraine investigated here the 129 I and 137 Cs inventories are well correlated, the variability of the individual 129 I/ 137 Cs ratios being, however, high. Both the 129 I and 137 Cs inventories in the individual 5 samples for each settlement allowed estimating the uncertainties of the inventories due to the variability of the radionuclide deposition and consequently of the retrospective dosimetry.Thyroid equivalent doses were calculated from the 129 I and the 137 Cs inventories using aggregated dose coefficients for 5-year old and 10-year-old children as well as for adults. The highest thyroid equivalent doses (calculated from 129 I inventories) were calculated for Wladimirowka with 30 Gy for 5-years-old children and 7 Gy for adults. In 35 settlements of contamination zone II the geometric mean of the thyroid equivalent doses was 2.0 Gy for 5-years-old children with a geometric standard deviation (GSD) of 3.0. For adults the geometric mean was 0.47 Gy also with a GSD of 3.0. In more than 25 settlements of contamination zone III the geometric means were 0.82 Gy for 5-years old children with a GSD of 1.8 and 0.21 Gy for adults (GSD 1.8).For 45 settlements, the results of the retrospective dosimetry could be compared with thyroid equivalent doses calculated using time-integrated 131 I activities of thyroids which were measured in 1986. Thus, a critical evaluation of the results was possible which demonstrated the general feasibility of the method, but also the associated uncertainties and limitations.

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Section: Resultssupporting

confidence: 85%