Fig 1.
10 cities were selected from north part of Zhitomir region, Ukraine, southwest from Chernobyl. In Ukraine, a classification of 4 contamination zones was established. The zones were defined according to soil contamination levels of 137Cs as zone I (> 1480 kBq/m2), zone II (555 kBq/m2–1480 kBq/m2), zone III (185 kBq/m2–555 kBq/m2) and zone IV (37 kBq/m2–185 kBq/m2). The 10 cities we chosen were classified to zone II-IV as shown in the table. This map was modified from copyright free maps provided by DesignExchange Co. Ltd and Ministry of Emergency and Protection of Chernobyl-affected people, Ukraine.
Table 1.
Population, age and outcome of 137Cs screening from 2009 to 2012.
Fig 2.
Seasonal difference of Cs-137 body burden in residents.
The end of the box indicate the positions of the 75th percentiles of the data. The median Cs-137 body burden was below the detectable level in each season however significantly higher in autumn than other seasons (p<0.001).
Table 2.
Total population and outcome of 137Cs screening in 10 chosen cities from 2009 to 2012.
Fig 3.
Cs-137 body burden in the residents living in each zone.
The end of the box indicate the positions of the 75th percentiles of the data. The Cs-137 body burden was significantly higher in more contaminated zone.
Table 3.
Log(137Cs body burden + 1) of each zone adjusted by age category, sex, and year of examination.
Table 4.
Seasonal differences in the 137Cs body burdens of each zone: the highly contaminated area and the not highly contaminated area.
Fig 4.
Correlation between mean 137Cs concentration of soil samples and rate of population with dose of >0.1mSv/year of each city.