Since the establishment of the first radiocarbon accelerator mass spectrometry facility in Latin America in 2009, the Radiocarbon Laboratory team of Universidade Federal Fluminense (LAC-UFF) has worked to improve sample preparation protocols and increase the range of environmental matrices to be analyzed. We now present the preliminary results for DIC sample preparation protocols. The first validation tests include background evaluation with pMC value (0.35 ± 0.04) using bicarbonate dissolved in water. We also analyzed surface seawater resulting in pMC value (101.38 ± 0.38) and a groundwater previously dated from LEMA AMS-Laboratory with pMC value (12.30 ± 0.15).

中文翻译：

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在巴西 LAC-UFF 建立用于放射性碳分析的水样协议

自 2009 年在拉丁美洲建立第一个放射性碳加速器质谱设施以来，联邦弗鲁米嫩塞大学 (LAC-UFF) 的放射性碳实验室团队一直致力于改进样品制备协议并增加要分析的环境基质的范围。我们现在介绍 DIC 样品制备协议的初步结果。第一个验证测试包括使用溶解在水中的碳酸氢盐对 pMC 值 (0.35 ± 0.04) 进行背景评估。我们还分析了地表海水的 pMC 值 (101.38 ± 0.38) 和先前来自 LEMA AMS-Laboratory 的地下水 pMC 值 (12.30 ± 0.15)。