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Radionuclide
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Activiteitsconcentratie ([kBq/kg])
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U-238sec (incl.U-235sec)
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0.5
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0.1 (monostortplaats)
|
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U nat
|
5
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Th-230
|
10
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Ra-226+
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0.5
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0.1 (monostortplaats)
|
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Pb-210+
|
5
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Po-210
|
5
|
Th-232sec
|
0.5
|
0.1 (monostortplaats)
|
|
Th-232
|
5
|
Ra-228+
|
1
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Th-228+
|
0.5
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K-40
|
5
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Moedernuclide
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Radionucliden beschouwd in seculair evenwicht
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Uraniumreeks
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U-238sec
|
U-238, Th-234, Pa-234m, Pa-234 (0.3 %), U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
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U nat
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U-238, Th-234, Pa-234m, Pa-234 (0.3 %), U-234, U-235 (4.6 %), Th-231 (4.6 %)
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Th-230
|
Th-230
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Ra-226+
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Ra-226, Rn-222, Po-218, Pb-214, Bi-214, Po-214
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Pb-210+
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Pb-210, Bi-210
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Po-210
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Po-210
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U-235sec
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U-235, Th-231, Pa-231, Ac-227, Th-227 (98.6 %), Fr-223 (1.4 %), Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211 (0.3 %)
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U-235+
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U-235, Th-231
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Pa-231
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Pa-231
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AC-227+
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Ac-227, Th-227 (98.6 %), Fr-223 (1.4 %), Ra-223, Rn-219, Po-215, Pb-211, Bi-211, Tl-207, Po-211 (0.3 %)
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Thoriumreeks
|
|
Th-232sec
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Th-232, Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212 (64.1 %), Tl-208 (35.9 %)
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Th-232
|
Th-232
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Ra-228+
|
Ra-228, Ac-228
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Th-228+
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Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Po-212 (64.1 %), Tl-208 (35.9 %)
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