A coupled accelerator mass spectrometer–gas interface system has been successfully operating at the Hertelendi Laboratory of Environmental Studies, Debrecen, Hungary, since 2013. Over the last 6 years more than 500 gas targets were measured below 100 µg carbon content for carbon isotopic composition. The system was tested with blanks, OxII, IAEA-C1, IAEA-C2, and IAEA-C7 standards. The performance of our instrumentation shows good agreement with other published gas-interface system data and also shows a quite good agreement with the nominal value of international standard samples. There is a measurable but quite small memory effect after modern samples, but this does not significantly affect the final results. Typical ion currents at the low energy side were between 10–15 µA with a 5% CO2 in He mixing ratio. The relative errors average ±6% for samples greater than or equal to 10 µgC sample with mean count rates of 300 counts per microgram C for OxII. The blank is comparable with other systems, which is 0.0050 ± 0.0018 F14C or 34,000–47,000 yr BP, which allows for the routine measurement of both of small environmental and archeological samples.

中文翻译：

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匈牙利德布勒森 HEKAL 实验室环境计量学的气体离子源性能

自 2013 年以来，匈牙利德布勒森的 Hertelendi 环境研究实验室成功运行了耦合加速器质谱仪-气体接口系统。在过去 6 年中，超过 500 个气体目标的碳同位素组成低于 100 µg 碳含量。该系统使用空白、OxII、IAEA-C1、IAEA-C2 和 IAEA-C7 标准进行了测试。我们仪器的性能与其他公布的气体界面系统数据表现出良好的一致性，并且与国际标准样品的标称值也表现出相当好的一致性。现代样本后有可测量但很小的记忆效应，但这不会显着影响最终结果。低能量侧的典型离子电流在 10–15 µA 之间，含 5% CO2在 He 混合比中。对于大于或等于 10 µgC 样品的样品，相对误差平均为 ±6%，对于 OxII，平均计数率为 300 个计数/微克 C。空白与其他系统相当，为 0.0050 ± 0.0018 F14C 或 34,000–47,000 年 BP，允许对小型环境和考古样本进行常规测量。