Radiological impact in Korea following the Fukushima nuclear accident

The pathway and radiological impact of the radioactive plume released at the Fukushima nuclear accident site on the Korean Peninsula has been studied. On March 28, 2011, only 131I was first observed at all 12 regional monitoring stations in Korea, and the highest activity concentrations in aerosol were 3.12 mBq/m3 for 131I at Gunsan, 1.19 mBq/m3 for 134Cs and 1.25 mBq/m3 for 137Cs at Busan on April 7, 2011. These radionuclides were also detected in dry and wet deposition samples, while the significant increase of 131I, 134Cs and 137Cs activity concentrations were not observed in seawater and marine biota samples.