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Evaluation of the Relationship between Current Internal 137Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine.

Kimura Y, Okubo Y, Hayashida N, Takahashi J, Gutevich A, Chorniy S, Kudo T, Takamura N - PLoS ONE (2015)

Bottom Line: After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents.The 137Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001).In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to 137Cs soil contamination.

View Article: PubMed Central - PubMed

Affiliation: Department of Global Health, Medicine and Welfare, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

ABSTRACT
After the Chernobyl Nuclear Power Plant accident, the residents living around the Chernobyl were revealed to have been internally exposed to 137Cs through the intake of contaminated local foods. To evaluate the current situation of internal 137Cs exposure and the relationship between the 137Cs soil contamination and internal exposure in residents, we investigated the 137Cs body burden in residents who were living in 10 selected cities from the northern part of the Zhitomir region, Ukraine, and collected soil samples from three family farms and wild forests of each city to measured 137Cs concentrations. The total number of study participants was 36,862, of which 68.9% of them were female. After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents. The 137Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001). We also found a significant correlation between the proportion of residents in each city with an estimated annual exposure dose exceeding 0.1 mSv and 137Cs concentration of soil samples from family farms (r = 0.828, p = 0.003). In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to 137Cs soil contamination. Furthermore, the consumption of local foods is considered to be the cause of internal exposure.

No MeSH data available.


Related in: MedlinePlus

Correlation between mean 137Cs concentration of soil samples and rate of population with dose of >0.1mSv/year of each city.
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pone.0139007.g004: Correlation between mean 137Cs concentration of soil samples and rate of population with dose of >0.1mSv/year of each city.

Mentions: Fig 4 shows the relationship between mean 137Cs concentrations of soil samples collected at forest and family farms, and the proportion of residents with estimated annual exposure dose exceeded 0.1 mSv in each city. Concentrations of 137Cs tended to be higher in soil samples from contaminated areas. There was a significant correlation between 137Cs concentration in soil samples from family farms and the proportion of residents with estimated annual exposure dose that exceeded 0.1 mSv in each city (r = 0.828, p = 0.003). On the other hand, we found the tendency of increase of prevalence of estimated annual exposure dose that exceeded 0.1 mSv in each city in proportion as increasing the 137Cs concentrations in soil samples from forests, but the relationship not significant (r = 0.40, p = 0.242).


Evaluation of the Relationship between Current Internal 137Cs Exposure in Residents and Soil Contamination West of Chernobyl in Northern Ukraine.

Kimura Y, Okubo Y, Hayashida N, Takahashi J, Gutevich A, Chorniy S, Kudo T, Takamura N - PLoS ONE (2015)

Correlation between mean 137Cs concentration of soil samples and rate of population with dose of >0.1mSv/year of each city.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4581839&req=5

pone.0139007.g004: Correlation between mean 137Cs concentration of soil samples and rate of population with dose of >0.1mSv/year of each city.
Mentions: Fig 4 shows the relationship between mean 137Cs concentrations of soil samples collected at forest and family farms, and the proportion of residents with estimated annual exposure dose exceeded 0.1 mSv in each city. Concentrations of 137Cs tended to be higher in soil samples from contaminated areas. There was a significant correlation between 137Cs concentration in soil samples from family farms and the proportion of residents with estimated annual exposure dose that exceeded 0.1 mSv in each city (r = 0.828, p = 0.003). On the other hand, we found the tendency of increase of prevalence of estimated annual exposure dose that exceeded 0.1 mSv in each city in proportion as increasing the 137Cs concentrations in soil samples from forests, but the relationship not significant (r = 0.40, p = 0.242).

Bottom Line: After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents.The 137Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001).In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to 137Cs soil contamination.

View Article: PubMed Central - PubMed

Affiliation: Department of Global Health, Medicine and Welfare, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

ABSTRACT
After the Chernobyl Nuclear Power Plant accident, the residents living around the Chernobyl were revealed to have been internally exposed to 137Cs through the intake of contaminated local foods. To evaluate the current situation of internal 137Cs exposure and the relationship between the 137Cs soil contamination and internal exposure in residents, we investigated the 137Cs body burden in residents who were living in 10 selected cities from the northern part of the Zhitomir region, Ukraine, and collected soil samples from three family farms and wild forests of each city to measured 137Cs concentrations. The total number of study participants was 36,862, of which 68.9% of them were female. After 2010, the annual effective doses were less than 0.1 mSv in over 90% of the residents. The 137Cs body burden was significantly higher in autumn than other seasons (p < 0.001) and in residents living in more contaminated areas (p < 0.001). We also found a significant correlation between the proportion of residents in each city with an estimated annual exposure dose exceeding 0.1 mSv and 137Cs concentration of soil samples from family farms (r = 0.828, p = 0.003). In conclusion, more than 25 years after the Chernobyl accident, the internal exposure doses to residents living in contaminated areas of northern Ukraine is limited but still related to 137Cs soil contamination. Furthermore, the consumption of local foods is considered to be the cause of internal exposure.

No MeSH data available.


Related in: MedlinePlus