Overview of strontium-89,90 deposition measurements in Finland 1963–2005

Paatero, Jussi; Saxén, R; Buyukay, Murat; Outola, Iisa

doi:10.1016/j.jenvrad.2010.01.004

Cited by 17 publications

(9 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The activity ratio 90 Sr/ 137 Cs had the lowest value in April–June 1986, 0.0040±0.0008. This ratio value is extremely low and it confirms the earlier discussed existence of Chernobyl-derived 137 Cs and absence of Chernobyl-derived 90 Sr in Rovaniemi, as well as previously suggested occurrence of 90 Sr and plutonium in the same contamination plumes from the exploded Chernobyl nuclear reactor to Finland (Paatero et al 2010a). About 85 PBq of 137 Cs and 10 PBq of 90 Sr were released during the Chernobyl accident (UNSCEAR 2000), producing 90 Sr/ 137 Cs activity ratio of 0.118 for Chernobyl-derived 90 Sr and 137 Cs contamination, assuming similar atmospheric migration of both isotopes.…”

Section: Resultssupporting

confidence: 90%

See 1 more Smart Citation

Nuclear contamination sources in surface air of Finnish Lapland in 1965–2011 studied by means of 137Cs, 90Sr, and total beta activity

Salminen‐Paatero

Thölix

Kivi

et al. 2019

Environ Sci Pollut Res

Self Cite

View full text Add to dashboard Cite

Radionuclides 137 Cs and 90 Sr and total beta activity were determined from air filters collected in Rovaniemi (Finnish Lapland) in 1965–2011. Nuclear contamination sources present in the air filter samples as well as temporal changes in radionuclide concentrations were examined. Ozone observations and meteorological modeling were used in combination with radionuclide analyses to study the reasons behind the observed seasonal concentration variation. In general, the magnitude and variation in activity concentrations of 137 Cs and 90 Sr and total beta activity in the surface air of Rovaniemi in 1965–2011 corresponded well with values from other countries. However, the obtained results prove in practice that hardly any refractory or intermediate radionuclides from the destroyed Chernobyl reactor fuel were introduced to Finnish Lapland. The main source of 137 Cs and 90 Sr and total beta activity in the surface air of Rovaniemi in 1965–2011 has been intense atmospheric nuclear weapon testing in 1950s–1960s and later tests performed in 1965–1980, as well as leakages from underground nuclear tests in Semipalatinsk, 1966, and Novaya Zemlya, 1987. For 137 Cs and total beta activity, the influence of Chernobyl and Fukushima accidents was detected.

show abstract

Section: Resultssupporting

confidence: 90%

“…A frontal zone over Central Finland route first hindered the emission plume to reach Northern Finland. The emissions arrived at Northern Finland a few days later but the activity concentrations in the ground-level air were only a few per mille of those observed in Southern Finland (Paatero et al 2010a).…”

Section: Resultsmentioning

confidence: 91%

Nuclear contamination sources in surface air of Finnish Lapland in 1965–2011 studied by means of 137Cs, 90Sr, and total beta activity

Salminen‐Paatero

Thölix

Kivi

et al. 2019

Environ Sci Pollut Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…While many studies have reported 134 Cs and 137 Cs concentrations in soils and vegetation across Europe [Paatero et al, 2007;Mietelski et al, 2008;Duff and Ramsey, 2008;Lehto et al, 2008;Khrushchinskii et al, 2014], to date only one study of soil samples within the Chernobyl exclusion zone has reported 135 Cs/ 137 Cs ratios [Taylor et al, 2008]. As several different anthropogenic emission source terms in Europe exist, characterization of the general 135 Cs/ 137 Cs ratio distribution across Europe could be of great value to future contamination source term analyses and environmental transport studies in this region.…”

Section: Introductionmentioning

confidence: 99%

135Cs/137Cs isotopic composition of environmental samples across Europe: Environmental transport and source term emission applications

Snow

Snyder

2016

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

(135)Cs/(137)Cs isotopic analyses represent an important tool for studying the fate and transport of radiocesium in the environment; in this work the (135)Cs/(137)Cs isotopic composition in environmental samples taken from across Europe is reported. Surface soil and vegetation samples from western Russia, Ukraine, Austria, and Hungary show consistent aged thermal fission product (135)Cs/(137)Cs isotope ratios of 0.58 ± 0.01 (age corrected to 1/1/15), with the exception of one sample of soil-moss from Hungary which shows an elevated (135)Cs/(137)Cs ratio of 1.78 ± 0.12. With the exception of the outlier sample from Hungary, surface soil/vegetation data are in quantitative agreement with values previously reported for soils within the Chernobyl exclusion zone, suggesting that radiocesium at these locations is primarily composed of homogenous airborne deposition from Chernobyl. Seawater samples taken from the Irish Sea show (135)Cs/(137)Cs isotope ratios of 1.22 ± 0.11 (age corrected to 1/1/15), suggesting aged thermal fission product Cs discharged from Sellafield. The differences in (135)Cs/(137)Cs isotope ratios between Sellafield, Chernobyl, and global nuclear weapons testing fallout indicate that (135)Cs/(137)Cs isotope ratios can be utilized to discriminate between and track radiocesium transport from different nuclear production source terms, including major emission sources in Europe.

show abstract

“…90 Sr and 137 Cs depositions originating from the nuclear weapons tests were rather evenly distributed over the country unlike the Chernobyl deposition. The accumulated average 90 Sr deposition in 2010 was about 0.7 kBq m −2 , of which a minor part originates from the Chernobyl accident (Paatero et al 2010). The accumulated 137 Cs deposition in 1985 has been estimated at 1.79 kBq m −2 (STUK-A54 1987).…”

Section: Introductionmentioning

confidence: 99%

Artificial radioactivity of Finnish vegetables in the 2000s

Kostiainen

Turtiainen

2013

Food Additives & Contaminants: Part A

View full text Add to dashboard Cite

A survey on long-lived artificial radionuclides (137)Cs and (90)Sr in vegetables produced in Finland was carried out in 2009-2010. The mean (137)Cs concentrations of all the outdoor vegetables were well below 0.5 Bq kg(-1), ranging from <0.01 to 8.15 Bq kg(-1) (fresh weight). The highest (137)Cs contents were found in potato and root vegetables. The uneven distribution of the (137)Cs deposition after the Chernobyl accident in 1986 was still seen in the (137)Cs contents of outdoor vegetables. The (137)Cs contents of greenhouse vegetables varied from <0.01 to 9.3 Bq kg(-1), and the highest concentrations were found in organic lettuce grown in peat pots. The concentrations of (90)Sr in the vegetables varied from 0.0087 to 0.17 Bq kg(-1) fresh weight. The mean effective dose resulting from (137)Cs and (90)Sr in vegetables in 2009-2010 was <0.3 µSv a(-1) and poses no health risk to the consumers.

show abstract

Overview of strontium-89,90 deposition measurements in Finland 1963–2005

Cited by 17 publications

References 15 publications

Nuclear contamination sources in surface air of Finnish Lapland in 1965–2011 studied by means of 137Cs, 90Sr, and total beta activity

Nuclear contamination sources in surface air of Finnish Lapland in 1965–2011 studied by means of 137Cs, 90Sr, and total beta activity

135Cs/137Cs isotopic composition of environmental samples across Europe: Environmental transport and source term emission applications

Artificial radioactivity of Finnish vegetables in the 2000s

Contact Info

Product

Resources

About