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Determination of 14C in radwaste samples through sequential wet oxidation and acid stripping extraction
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DOI：10.1016/j.net.2026.104129.png)
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Abstract
En 中文
14C is a long half-life nuclide (t1/2 = 5730 y) produced naturally and artificially. It is a difficult-to-measure nuclide because of its pure beta decay, but identifying it is essential to ensuring appropriate radwaste disposal and management. This study developed and optimized a practical process for analyzing 14C from 21 radioactive waste samples. The measured activity of 14C in the radioactive waste samples ranged from 0.05 ± 0.04 to 68.83 ± 0.13 Bq g−1, and their scaling factors (14C-to-60Co activity ratio) were calculated to be 0.035–1.015. In summary, the developed simple and low-cost sequential wet-oxidation-acid-stripping extraction process can be routinely used for determining 14C in low-level radwaste samples in the laboratory.
Keywords:
14C
Low-level radwaste
Sequential wet-oxidation–acid-stripping extraction
Liquid scintillation counter
Scaling factor
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