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核废料材料中放射性碳的光腔衰荡光谱分析

Cavity Ring-Down Spectroscopy Analysis of Radiocarbon from Nuclear Waste Materials.

作者信息

Lehmuskoski Johannes, Genoud Guillaume, Leskinen Anumaija, Vasama Hannu, Salminen Juho, Hokkinen Jouni, Räty Antti

机构信息

VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, Espoo, FI-02044, VTT, Finland.

出版信息

ACS Omega. 2024 Dec 2;9(50):49098-49107. doi: 10.1021/acsomega.4c04424. eCollection 2024 Dec 17.

DOI:10.1021/acsomega.4c04424
PMID:39713702
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11656205/
Abstract

Radiocarbon analysis of nuclear waste produced in nuclear facilities lacks fast, in situ detection methods. Moreover, the amount of radiocarbon desorbing from graphitic waste is not well known. In this study, we demonstrate the use of mid-infrared cavity ring-down spectroscopy combined with an automatic sample processing unit as a method to examine radiocarbon concentration in three types of nuclear waste: spent ion-exchange resin, graphite, and graphite outgassing in sealed storage crates. The solid samples were gasified, which allowed analyzing the effect of heating on the radiocarbon outgassing from the samples. The presented method also enabled examination of molecular speciation of the radiocarbon in the samples. The method performed well with the graphite and gaseous samples, but the analysis of the spent ion-exchange resin did not produce repeatable results due to high NO concentrations. In the future, the presented method can be used at nuclear facilities and expanded to a wider variety of sample materials than those presented here.

摘要

核设施产生的核废料的放射性碳分析缺乏快速的原位检测方法。此外，从石墨废料中解吸的放射性碳的量尚不清楚。在本研究中，我们展示了使用中红外腔衰荡光谱结合自动样品处理单元作为一种检测三种核废料中放射性碳浓度的方法：废离子交换树脂、石墨以及密封储存箱中的石墨脱气。固体样品被气化，这使得能够分析加热对样品中放射性碳脱气的影响。所提出的方法还能够检测样品中放射性碳的分子形态。该方法对石墨和气态样品效果良好，但由于高浓度的NO，对废离子交换树脂的分析没有产生可重复的结果。未来，所提出的方法可用于核设施，并扩展到比本文所展示的更多种类的样品材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a5e/11656205/ebfa615367fe/ao4c04424_0008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a5e/11656205/ddcce8f3061e/ao4c04424_0007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a5e/11656205/ba16bcabd630/ao4c04424_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a5e/11656205/e12fd21e3c31/ao4c04424_0002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9a5e/11656205/ebfa615367fe/ao4c04424_0008.jpg

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本文引用的文献

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Proc Natl Acad Sci U S A. 2022 Jul 12;119(28):e2122122119. doi: 10.1073/pnas.2122122119. Epub 2022 Jul 7.
2
Carbon-14 release and speciation during corrosion of irradiated steel under radioactive waste disposal conditions.辐照钢在放射性废物处置条件下腐蚀过程中的碳-14 释放和形态。
Sci Total Environ. 2022 Apr 15;817:152596. doi: 10.1016/j.scitotenv.2021.152596. Epub 2021 Dec 25.
3
On-Line Monitoring of Radiocarbon Emissions in a Nuclear Facility with Cavity Ring-Down Spectroscopy.
用腔衰荡光谱法对核设施中放射性碳排放进行在线监测。
Anal Chem. 2021 Dec 7;93(48):16096-16104. doi: 10.1021/acs.analchem.1c03814. Epub 2021 Nov 23.
4
Radiocarbon dioxide detection using cantilever-enhanced photoacoustic spectroscopy.使用悬臂增强光声光谱法检测放射性二氧化碳
Opt Lett. 2021 May 1;46(9):2083-2086. doi: 10.1364/OL.420199.
5
Laser Spectroscopy for Monitoring of Radiocarbon in Atmospheric Samples.激光光谱法监测大气样本中的放射性碳。
Anal Chem. 2019 Oct 1;91(19):12315-12320. doi: 10.1021/acs.analchem.9b02496. Epub 2019 Sep 19.
6
Optical Measurement of Radiocarbon below Unity Fraction Modern by Linear Absorption Spectroscopy.通过线性吸收光谱法对低于现代分数单位的放射性碳进行光学测量。
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Quantifying Carbon-14 for Biology Using Cavity Ring-Down Spectroscopy.利用腔衰荡光谱技术对生物学中的碳-14 进行定量。
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