@book{9ae71524e3d64603a2012ce9008fcd9b,
title = "Radioactivity in the Ris{\o} District July-December 2011",
abstract = "The environmental surveillance of the Ris{\o} environment was continued in July - December 2011. The mean concentrations in air were: 0.25±0.19 μBq m–3 of 137Cs, 2.81±1.71 mBq m–3 of 7Be and 0.23±0.18 mBq m–3 of 210Pb (±1 S.D.; N = 26). The depositions by precipitation at Ris{\o} in the second half of 2010 were: 0.102 Bq m–2 of 137Cs, 757 Bq m–2 of 7Be, 75.1 Bq m–2 of 210Pb and < 0.8 kBq m–2 of 3H. The average background dose rate (TLD) at Ris{\o} (Zone I) was 67 nSv h–1 compared with 66 ± 14 nSv h–1 (±1 S.D.; N = 3) in the four zones around Ris{\o}.",
keywords = "DTU-Nutech-R-0001(EN), DTU-Nutech-R-0001, DTU Nutech R",
author = "Nielsen, {Sven Poul} and Andersson, {Kasper Grann} and Arne Miller",
year = "2012",
language = "English",
isbn = "978-87-995321-0-0",
series = "DTU-Nutech-R",
publisher = "DTU Nutech",
number = "1",
}