Abstract
A SIMPLE method for quantitatively estimating carbon-14 in plant material (for example, carbon-14 tagged herbicides, as in our own case) is to press the material into wafers and to count these directly with a Geiger or proportional counter.
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References
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CORBETT, J., MILLER, C. Determination of Carbon-14 in Plant Material by Wafer Counting. Nature 199, 1106–1107 (1963). https://doi.org/10.1038/1991106a0
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DOI: https://doi.org/10.1038/1991106a0
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