Radionuclide particles in ground level air in Sweden during 2014

Authors:

  • Catharina Söderström
  • Johan Kastlander
  • Mikael Meister
  • Neda Tooloutalaie

Publish date: 2015-03-18

Report number: FOI-R--4064--SE

Pages: 15

Written in: English

Keywords:

  • Airborne radionuclides
  • deposition
  • 7Be
  • 131I
  • 137Cs

Abstract

Filtering of ground level air is performed continuously at six different locations in Sweden: Kiruna, Umeå, Gävle, Kista, Visby and Ljungbyhed. The filters are pressed into weekly samples and the contents of different radionuclides are measured by gamma spectroscopy. Precipitation is collected at four of the stations: Kiruna, Gävle, Kista and Ljungbyhed. These samples are ashed and the contents of radionuclides are measured. Weekly activity concentrations of 7Be and 137Cs during 2014 in air and precipitation are presented for the different stations.