TABLE 25

RADIONUCLIDES OF IMPORTANCE FOR INVENTORIES IN BIOTIC COMPARTMENTS
IN THE GREAT LAKES

Radionuclide Half-Life Category
(I, Intermediate)
(II, Long-lived)

Method of Production

Fission Activation Decay Primordial Cosmogenic
3 H
10 Be*
14 C
32 Si
32 P*
33 P*
40 K*
45 Ca
51 Cr*
54 Mn*
55 Fe*
57 Co*
58 Co*
60 Co*
63 Ni
63 Zn
86 Rb*
87 Rb*
89 Sr*
90 Sr*
91 Y
12 years
2.5 10 6 years
5730 years
650 years
14.3 days
25 days
1.28 10 6 years
16.5 days
27.8 days
303 days
2.6 years
270 days
71.3 days
5.26 years
92 years
243 days
18.6 days
4.8 10 10 years
52 days
28.1 years
58.8 days
II
II
II
I
I
I
II
I
I
I
I
I
I
I
II
I
I
II
I
II
I
X X

X
X
X
X

X
X
X
X
X
X
X
X
X
X
X
X
X
X







X














X
X
X
X
X
X
X

X



TABLE 25 (continued)

RADIONUCLIDES OF IMPORTANCE FOR INVENTORIES IN BIOTIC COMPARTMENTS
IN THE GREAT LAKES

Radionuclide Half-Life Category
(I, Intermediate)
(II, Long-lived)

Method of Production

Fission Activation Decay Primordial Cosmogenic
95 Zr*
95 Nb*
95 Zr/ 95 Nb (combination)
99 Tc*
99 Mo/ 99 Tc (combination)
103 Ru
106 Ru
110m Ag
113 Sn
117m Sn
129 I*
134 Cs*
136 Cs*
137 Cs*
137 Ba
140 Ba/ 140 La (combination)
141 Ce*
144 Ce*
210 Pb
226 Ra
232 Th
238 U
65 days
35.1 days

2.1 10 5 years

39.6 days
367 days
253 days
115 days
14 days
1.7 10 7 years
2.05 years
13 days
30.23 years
12.8 days


33 days
285 days
223 years
1600 years
1.4 10 10 years
4.5 10 9 years
I
I
I
I
II
I
I
I
I
I
II
I
I
I
I
I

I
I
II
II
II
II
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

X





















X






















X
X






















X
X
X
X
Note : A radionuclide with an asterisk means that the element associated with this isotope is discussed in the bioaccumulation chapter.

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