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Chege, M.W.* ; Hashim, N.* ; Merenga, A.* ; Meisenberg, O. ; Tschiersch, J.

Thoron exhalation rate and 232Th content in traditional building materials used in the coastal region of Kenya.

In: (Proceedings of the 14th International Congress of the International Radiation Protection Association, 9–13 May 2016, Cape Town, South Africa). 2016. 1511-1514 ( ; 4)
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This paper presents thoron exhalation rate and specific concentration of 232Th in samples of dried-up mud lumps from the walls of selected dwellings in the coastal region of Kenya. Exhalation measurement was done using RAD7 alpha detection system while that of 232Th was done using a high purity germanium detector. The exhalation rate ranged from below detection limit to 35.7±5.2 Bq m-2 s-1 with an arithmetic mean of 10.3±1.6 Bq m-2 s-1. 232Th concentration averaged 227±10 Bq kg-1 with a minimum of 17±1 Bq kg-1 and a maximum of 804±34 Bq kg-1. A strong positive correlation (R2=0.99) was observed between thoron exhalation rate and 232Th content in the building material samples studied.
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Publikationstyp Artikel: Konferenzbeitrag
Schlagwörter Thoron; 232Th; soil; building materials; exhalation rate; dwellings; Mrima hill
ISSN (print) / ISBN 978-0-9989666-4-9
Konferenztitel Proceedings of the 14th International Congress of the International Radiation Protection Association
Konferzenzdatum 9–13 May 2016
Konferenzort Cape Town, South Africa
Quellenangaben Band: 4, Heft: , Seiten: 1511-1514 Artikelnummer: , Supplement: ,