α-Autoradiography: A Simple Method to Monitor the Migration of α-Emitters in the Environment

机译：α-放射自显影：监测环境中α-发射体迁移的简单方法

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Environments contaminated with α-emitters (mostly actinides) represent a serious hazards to humans and nature. Current technologies to monitor and remediate areas contaminated with α-emitters are often hindered by our limited understanding of the actinide fate and transport behavior in those environments. Here we demonstrate how the well-established simple technique of α-autoradiography can be deployed in a field setting to enhance our understanding of actinide transport, to determine the spatial distribution of actinides in soils, and to help identify the morphology of the association of actinides with soil constituents. Preliminary conclusions are drawn relative to controls that govern the fate and transport of actinides that were deposited more than 40 years ago in the semi-arid soils of the Nevada Test Site. Our experimental data clearly indicate that actinides move through desert soils. This observation contradicts previous assumptions that actinides are relatively immobile and remain within the very top soil layer. We were able to demonstrate that the designed tool can be applied for screening in monitoring and remediation efforts.

机译：被α-发射体（主要是act系元素）污染的环境对人类和自然构成严重危害。由于我们对those系元素在这些环境中的结局和运输行为的了解有限，因此通常难以监测和补救被α排放源污染的现有技术。在这里，我们演示了如何将公认的简单的α-放射自显影技术应用于野外环境，以增强我们对act系元素运移的了解，确定of系元素在土壤中的空间分布以及帮助识别identify系元素缔合的形态与土壤成分。相对于控制40年前沉积在内华达试验场的半干旱土壤中的act系元素的命运和运输的控制措施，得出了初步结论。我们的实验数据清楚地表明act系元素在沙漠土壤中移动。该观察结果与先前的假设act系元素相对不动并保留在最顶层的土壤层中相矛盾。我们能够证明该设计工具可用于筛查监测和补救工作。

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《American Chemical Society(ACS) National Meeting; 20020408-20020410; Orlando,FL; US》|2002年|P.121-137|共17页
会议地点 Orlando FL(US);Orlando FL(US)
作者
Carola A. Laue; David K. Smith;
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Analytical and Nuclear Chemistry Division, Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94550;

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原文格式 PDF
正文语种 eng
中图分类核转变化学;
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α-Autoradiography: A Simple Method to Monitor the Migration of α-Emitters in the Environment

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