Estimate the age of a bottled wine that has a tritium, 3H, content 75% that of freshly bottled wine. Tritium decays by beta decay and has a half-life of 12.3 years.
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693}{λ} \] \[ 12.3 = \frac{0.693}{λ} \] \[ λ = \frac{0.693}{12.3} \] \[ λ ≈ 0.05634 \text{ years}^{-1} \] Show more…
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When a wine was analyzed for its tritium, ${ }^{3} \mathrm{H}$, content, it was found to contain $1.45 \%$ of the tritium originally present when the wine was produced. How old is the wine? $\left(t_{1 / 2}\right.$ of ${ }^{3} \mathrm{H}=12.3$ years. $)$
The age of wine can be determined by measuring the trace amount of radioactive tritium (3H) that is present in a sample. Tritium is formed in the upper atmosphere, and all naturally occurring water contains a small amount of 3H. However, when water is contained in a sealed wine bottle, the concentration of 3H decreases via a first-order radioactive decay with a half-life of 12.5 years. If an old bottle of wine is found to have a 3H concentration which is only 10% of that of fresh wine (which can be considered as "100%"), what is the age of the wine?
Sri K.
Tritium, or hydrogen- 3 , is formed in the upper atmosphere by cosmic rays, similar to the formation of carbon-14. Tritium has been used to determine the age of wines. A certain wine that has been aged in a bottle has a tritium content only $70 \%$ of that in a similar wine of the same mass that has just been bottled. How long has the aged wine been in the bottle? The half-life of tritium is $12.3 \mathrm{y}$.
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