Radium-226 and Polonium-210 in Leaf Tobacco and Tobacco Soil

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Science  20 Nov 1964:
Vol. 146, Issue 3647, pp. 1043-1045
DOI: 10.1126/science.146.3647.1043


Contents of radium-226 and polonium-210 in leaf tobacco and tobacco-growing soils vary with the source. The differences may result from production locality, culture, and curing. The polonium seems to be not entirely derived from the radium; plants probably take it up from the soil or air.