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The lowest level ""^(14)C activity for experimental detection is 0.03 dis/min/g of C. What is the maximum age of an object that can be determined by the C-14 method? Use necessary data from previous example |
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Answer» Solution :From the15dis/min corresponds to `N^(0)` and 0.03 dis/min/g of C corresponds to N. `therefore (N^(0))/(N)= (15)/(0.03)` Let the maximum AGE of the object be t years Thus, `LAMDA= (2.303)/(t) "log" (N^(0))/(N)` `(0.6932)/(5730)= (2.303)/(t) "log" (15)/(0.03)` or `t=5.1 xx 10^(4)` years |
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