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But the withdrawal of the spinach is not a consequence of the topsoil contamination. Both are consequences of falling radioactive dust.

So, in what may be my last act of "advising", I'll advise you to cut the jargon. -- My old PhD advisor, to me, 26/2/11
by Carrie (migeru at eurotrib dot com) on Wed Mar 23rd, 2011 at 10:56:40 AM EST
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With rainfall, I should think. The news item up there speaks of 5cm below the surface. (Did they choose that depth, did they also analyse surface dust, I don't know). But one would expect particles to have been washed below the surface by rain. Plants would be absorbing by roots and leaves.
by afew (afew(a in a circle)eurotrib_dot_com) on Wed Mar 23rd, 2011 at 01:12:15 PM EST
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theres a piece in the Chernobyl documentary that talks about the Caesium sinking 5cm a year down through the soil.

Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Wed Mar 23rd, 2011 at 01:35:26 PM EST
[ Parent ]
Wait, so after 30 years it's not only decayed by half but also sunk under 1.5m of soil?

So, in what may be my last act of "advising", I'll advise you to cut the jargon. -- My old PhD advisor, to me, 26/2/11
by Carrie (migeru at eurotrib dot com) on Wed Mar 23rd, 2011 at 01:40:00 PM EST
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I don't know the particular chemistry of caesium, but there's a general tendency for molecules to leach down gradually with rainwater. The more permeable the soil type, the quicker it happens.
by afew (afew(a in a circle)eurotrib_dot_com) on Wed Mar 23rd, 2011 at 01:45:36 PM EST
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