Transport of Strontium-90 in Runoff.
Only a small portion of the strontium-90 that fell on cultivated soils was removed in runoff. The concentration of strontium-90 was usually about 10 times higher in the soil carried by the runoff than in the soil from the plow layer of the plots. Thus, a considerable concentration of Sr(90) could occur in areas where runoff sediments accumulate.
Menzel
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