The preliminary results of soil gas radon concentrations and permeability in
situ measurements carried out in 39 primary schoolyards infour neighbouring municipalities
of Eastern Macedonia are presented in this paper. At each location,
the radon was sampled at 80 cm depth and measured by ionization chamber. Using
the RADON-JOK equipment the measurement of permeability was performed
in the same point. The infield campaigns were conducted in January and June
2016. Radon concentrations and permeability ranged: from 7 to 84 kBq/m
and
from 1:7 � 10
13
to 7:8 � 10
12
m
2
in January; and from 8 to 60 kBq/m
and from
2:5 � 10
14
to 1:9 � 10
11
m
2
in June. Spatial variations within investigated area
expressed by the coefficient of variation were lower for radon concentrations than
for permeability in both sets of measurements. The variations of radon were: 61%
in January and 56% in June whereas 102% in January and 149% for permeability
were obtained. The resulting radon potential of the measuring sites varied from
3 to 49 in January and from 2 to 38 in June. The correlation between observed
values and its relation with lithostratigraphy was confirmed.
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