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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Accurate determination of 41Ca concentrations in spent resins from the nuclear industry by Accelerator Mass Spectrometry
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Accurate determination of 41Ca concentrations in spent resins from the nuclear industry by Accelerator Mass Spectrometry

机译：加速器质谱法准确测定核工业废树脂中41Ca的浓度

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摘要

The radiological characterisation of nuclear waste is essential for managing storage sites. Determining the concentration of Long-Lived RadioNuclides (LLRN) is fundamental for their long-term management. This paper focuses on the measurement of low 41Ca concentrations in ions exchange resins used for primary fluid purification in Pressurised Water Reactors (PWR). 41Ca concentrations were successfully measured by Accelerator Mass Spectrometry (AMS) after the acid digestion of resin samples, followed by radioactive decontamination and isobaric suppression through successive hydroxide, carbonate, nitrate and final CaF2 precipitations. Measured 41Ca concentrations ranged from 0.02 to 0.03ng/g, i.e. from 0.06 to 0.09Bq/g. The 41Ca/60Co activity ratios obtained were remarkably reproducible and in good agreement with the current ratio used for resins management.
机译：核废物的放射学表征对于管理储存场所至关重要。确定长寿命放射性核素（LLRN）的浓度是对其长期管理的基础。本文着重于压水反应堆（PWR）中用于一次流体净化的离子交换树脂中低41Ca浓度的测量。树脂样品经酸消解后，通过加速器质谱（AMS）成功测量了41Ca浓度，然后通过连续的氢氧化物，碳酸盐，硝酸盐和最终的CaF2沉淀进行放射性去污和等压抑制。测得的41Ca浓度范围为0.02至0.03ng / g，即0.06至0.09Bq / g。所获得的41Ca / 60Co活性比具有很高的可重复性，并且与树脂管理中使用的当前比非常吻合。

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