Jacques -
Assuming of course, that:
a) You bother to look for Sr-89; and
b) If you look for it and don't find it (or if you do) you bother to report it.
Jim Hardeman
Jim_Hardeman@mail.dnr.state.ga.us
>>> <Jacques.Read@eh.doe.gov> 5/2/2000 11:18:44 >>>
Norm posted a question (paraphrased) "How can you tell 40-year old fission
product strontium from more recent fission product strontium? "
The answer given, namely that "You can't." is incorrect. 30-year strontium-90
from atmospheric weapons tests is still around ( or nearly half
of it), and persists in surface vegetation. Recent fission product strontium
will be (mostly, on a picocurie basis) strontium-89. If the radioassay
finds Sr90 but not Sr89, then it's fallout.
Jacques Read
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