Sources of anthropogenic radionuclides in the environment: a review

Assessment of the radiological impact of a decommissioned nuclear power plant in Italy

“…The values of 137 Cs agree with the specific activity corresponding to the fallout levels due to nuclear testing during the Cold War and the Chernobyl accident (Eisenbud and Gesell, 1997;De Cort et al, 1998;Jones et al, 1999;Wallberg et al, 2002;Lu et al, 2006); moreover, expected 60 Co levels due to fallout are consistent with the fact that we measured no detectable activity (Hu et al, 2010 and references above).…”

Characterization of Solidified Cement Bearing Organo-Clay after Adsorption of Perchlorate as a Surrogate of an Anionic Radionuclide

“…Al) ，6 配位 ( [6] Al) として 27 Al-NMR に より識別される。OPC のスペクトルでは，81.6 ppm に tricalcium alminate 中の [4] Al に起因する，最も強いピークが検出されてい…”

“…Al-NMR スペクトルは著しく変化し，10.0 ppm の化 学シフトをもつ [6] Al が優勢となった。OMt を 2 -10% 混合させ ている場合には，加えて約 13.4 ppm の [6] Al のピークも伴ってい た。Faucon らの報告 25) によれば，13.4 ppm の [6] Al は ettringite (Ca 6 Al 2 (SO 4 ) 3 (OH) 12 ・26H 2 O, AFt) 中の Al に，10.0 ppm の (Fig. 5 (a) ) 。養生 28 日後 には多くのサブミクロン粒子が表面に生成しており (Fig.…”

Determination of technetium-99 in environmental samples: A review

“…Compared with the atmospheric nuclear tests, a large number of nuclear tests were carried out underground, which produced a relatively larger amount of 99 Tc, but most of this was kept underground. It was estimated that about 21 TBq of 99 Tc was released in the underground nuclear tests in Nevada, USA, and 2.5 TBq of 99 Tc in French Polynesia [28]. Up to now, a huge amount of 99 Tc has been produced during the operation of the nuclear power plants.…”