Distribution of fission products in dust samples from the region of Thessaloniki, Greece, after the Chernobyl nuclear accident

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20

摘要:

The distribution of the fission products 95Zr, 95Nb, 103Ru, 106Ru (determined through 106Rh), 125Sb, 129mTe, 134Cs, 137Cs, 140Ba, 140La, 141Ce and 144Ce has been determined in dust samples from the region of Thessaloniki, Greece, after the nuclear accident at Chernobyl. The samples studied also included 110mAg, not belonging to the products of 235U fission. Samples showing higher concentrations of radionuclides also show a higher content in clay minerals, whereas samples having low concentrations of radionuclides usually contain large amounts of quartz and feldspars. Desorption and leaching experiments using solutions of chlorides of sodium, potassium, calcium and magnesium (0·5 N), as well as distilled and tap water, were also performed. Sodium and potassium chloride solutions were found to be efficient in desorbing and/or leaching of caesium and ruthenium isotopes to an extent of about 30%.

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DOI:

10.1016/0269-7491(87)90117-5

被引量:

36

年份:

1987

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1991
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