Abstract A new system for the preparation of graphite samples for radiocarbon (14C) measurement using an accelerator mass spectrometer (AMS) has been built in the Dendrochronological Laboratory at AGH-UST, Kraków. This system consists of three independent components. The first is the equipment for mechanical and chemical sample pre-treatment. The second is the vacuum line for sample sealing and the purification of CO2. The third and central part of this system is a graphitization line, where graphite is produced from CO2. In the first stage, chemical sample preparation was carried out to remove impurities. IAEA and NIST OxII standard materials were converted to CO2 without pre-treatment. In the next step, samples were combusted to CO2. The resulting CO2 was released under vacuum and cryogenically purified for subsequent graphitization. The performance of the system was tested with NIST OxII, IAEA standards (IAEA C5, C6 and C7) and background samples. The test confirms good reproducibility of results obtained for the samples prepared using this system. The results of the 49 samples of NIST Ox-II, IAEA standards and blank samples were presented in this article.

中文翻译：

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克拉科夫 Agh-Ust 树木年代学实验室中 ams 石墨化系统的状态

摘要 在克拉科夫 AGH-UST 的树木年代学实验室建立了使用加速器质谱仪 (AMS) 制备用于放射性碳 (14C) 测量的石墨样品的新系统。该系统由三个独立的组件组成。首先是机械和化学样品前处理设备。第二个是用于样品密封和 CO2 净化的真空管线。该系统的第三个也是中心部分是石墨化生产线，石墨是从二氧化碳中生产出来的。在第一阶段，进行化学样品制备以去除杂质。IAEA 和 NIST OxII 标准材料无需预处理即可转化为 CO2。在下一步中，样品被燃烧成 CO2。产生的二氧化碳在真空下释放并低温纯化用于随后的石墨化。该系统的性能通过 NIST OxII、IAEA 标准（IAEA C5、C6 和 C7）和背景样本进行了测试。该测试证实了使用该系统制备的样品获得的结果具有良好的重现性。本文介绍了 NIST Ox-II、IAEA 标准和空白样品的 49 个样品的结果。