Tritium was extracted from tritium-contaminated aluminum samples by heating it in a high-temperature furnace at 200, 300, or 400 °C for 15 h. The extracted tritium was analyzed by using a liquid scintillation counter (LSC); the sample thicknesses were 0.4 and 2 mm. The differences in tritium extraction over time were also investigated by cutting aluminum stick samples into several pieces (1, 5, 10, and 15) with the same thickness, and subsequently heating them. The results revealed that there are most of the hydrated material based on tritium on the surface of aluminum. When the temperature was increased from 200 or 300 °C–400 °C, there are no large differences in the heating duration required for the radioactivity concentration to be lower than the MDA value. Additionally, at the same thickness, because the surface of aluminum is only contaminated to tritiated water, cutting the aluminum samples into several pieces (5, 10, and 15) did not have a substantial effect on the tritium extraction fraction at any of the applied heating temperatures (200, 300, or 400 °C). The proportion of each tritium-release materials (aluminum hydrate based on tritium) were investigated via diverse analyses (LSC, XRD, and SEM-EDS).

通过在 200、300 或 400 °C 的高温炉中加热 15 小时，从受氚污染的铝样品中提取氚。使用液体闪烁计数器（LSC）分析提取的氚；样品厚度为 0.4 和 2 mm。还通过将铝棒样品切割成具有相同厚度的几块（1、5、10 和 15）并随后加热它们来研究氚提取随时间的差异。结果表明，铝表面存在大部分以氚为基础的水合材料。当温度从 200 或 300°C 升高到 400°C 时，放射性浓度低于 MDA 值所需的加热持续时间没有大的差异。此外，在相同的厚度下，因为铝的表面只被氚化的水污染，所以将铝样品切成几块（5、10 和 15）在任何加热温度（200、300、或 400 °C）。通过多种分析（LSC、XRD 和 SEM-EDS）研究了每种氚释放材料（基于氚的水合铝）的比例。