Activity measurement of gamma-ray emitters in aerosol filters exposed in Lithuania, in March-April 2011.

Abstract Two aerosol sampling stations in Lithuania were simultaneously used for assessing consequences of the accident at the Fukushima Dai-ichi nuclear power plant. The maximum activity concentrations of 129m Te, 131 I, 134 Cs and 137 Cs were 0.59±0.06, 3.5±0.3, 0.90±0.08, 0.90±0.07 mBq m −3 at station #1 in Vilnius, and 0.29±0.03, 1.0±0.1, 0.41±0.04, 0.41±0.04 mBq m −3 at station #2 in northeastern part of Lithuania, respectively.