Radionuclide particles in ground level air in Sweden during 2017

Authors:

  • Martin Goliath
  • Johan Kastlander
  • Mikael Meister
  • Henrik Olsson
  • Catharina Söderström

Publish date: 2018-10-04

Report number: FOI-R--4621--SE

Pages: 16

Written in: English

Keywords:

  • Airborne radionuclides
  • deposition
  • 7Be
  • 131I
  • 137Cs
  • 106Ru
  • 103Ru

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 combined and pressed into weekly samples and the contents of different radionuclides are measured by gamma spectroscopy. Precipitation samples are collected at four of the stations: Kiruna, Gävle, Kista and Ljungbyhed. These samples are ashed and the contents of radionuclides are measured monthly. Weekly activity concentrations of 7Be and 137Cs during 2017 in air and precipitation are presented for the different stations. Other anthropogenic radionuclides detected are also presented.

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