TY - GEN
T1 - Radioactivity of fertilizer and china (NORM) in Japan
AU - Shimo, Michikuni
AU - Matsuura, Yuka
AU - Itoh, Noriko
AU - Ejiri, Kazutaka
AU - Minami, Kazuyuki
PY - 2008/9/26
Y1 - 2008/9/26
N2 - Radioactivity of 6 fertilizer samples, 7 china clay samples and 5 china glaze samples, which are commonly used in Japan, was measured using a NaI(Tl) scintillation spectrometer. Potassium activity of fertilizer was almost 540-740 Bq/kg, and the highest activity was 9,100 Bq/kg. Activity of fertilizer was 10 times higher for potassium than for uranium-series. Furthermore, these activities were 25 times for potassium and 18 times for uranium-series in comparison with those in natural soil. In china clay, activities of potassium, uranium-series nuclides and thorium-series nuclides were 543-823 Bq/kg, 74.6-94.3 Bq/kg, and 86.3-128 Bq/kg, respectively. These were 1.5-2.2, 2.1-2.6 and 2.3-3.5 times higher than activity of common soil. Activity of glaze was almost equal to that of china clay.
AB - Radioactivity of 6 fertilizer samples, 7 china clay samples and 5 china glaze samples, which are commonly used in Japan, was measured using a NaI(Tl) scintillation spectrometer. Potassium activity of fertilizer was almost 540-740 Bq/kg, and the highest activity was 9,100 Bq/kg. Activity of fertilizer was 10 times higher for potassium than for uranium-series. Furthermore, these activities were 25 times for potassium and 18 times for uranium-series in comparison with those in natural soil. In china clay, activities of potassium, uranium-series nuclides and thorium-series nuclides were 543-823 Bq/kg, 74.6-94.3 Bq/kg, and 86.3-128 Bq/kg, respectively. These were 1.5-2.2, 2.1-2.6 and 2.3-3.5 times higher than activity of common soil. Activity of glaze was almost equal to that of china clay.
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U2 - 10.1063/1.2991238
DO - 10.1063/1.2991238
M3 - Conference contribution
AN - SCOPUS:52249119720
SN - 9780735405592
T3 - AIP Conference Proceedings
SP - 322
EP - 325
BT - The Natural Radiation Environment - 8th International Symposium (NRE VIII)
T2 - 8th International Symposium on the Natural Radiation Environment, NRE VIII
Y2 - 7 October 2007 through 12 October 2007
ER -