AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples
AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples
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KCCAMS/UCI 设施的 AMS 14C 样品制备：小样品的状态报告和性能
DOI：
10.1017/s0033822200042181
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发表时间：
2007
期刊：
影响因子：
8.3
通讯作者：
Dachun Zhang
中科院分区：
文献类型：
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作者：
Guaciara M. Santos;R. Moore;J. Southon;Sheila Griffin;E. Hinger;Dachun Zhang
我们提出了一个加速器质谱（AMS）放射性碳样品制备和测量的概述，描述了技术升级，现在使我们能够定期获得0.2-0.3%的精度为1毫克碳样品。在含100 μg碳的样品上也可以达到± 1%的精度。我们还开发了石墨化技术和AMS程序，用于超小样品（低至0.002 mg碳）。提供了大量和少量标准品的详细时间序列，如NIST OX-I和OX-II; FIRI-C和-D; IAEA-C6、-C7和-C8;以及不含14 C的样品。
We present an overview of accelerator mass spectrometry (AMS) radiocarbon sample preparation and measurements, describing the technical upgrades that now allow us to routinely obtain 0.2–0.3% precision for 1-mg carbon samples. A precision of ∼1% on samples with 100 μg of carbon can also be achieved. We have also developed graphitization techniques and AMS procedures for ultra-small samples (down to 0.002 mg of carbon). Detailed time series are presented for large and small aliquots of standards such as NIST OX-I and OX-II; FIRI-C and -D; IAEA-C6, -C7 and -C8; and 14C-free samples.