Laser Spectroscopy for Monitoring of Radiocarbon in Atmospheric Samples

被引：40

作者：

Genoud, Guillaume ^{[1
]}

Lehmuskoski, Johannes ^{[1
]}

Bell, Steven ^{[2
]}

Palonen, Vesa ^{[3
]}

Oinonen, Markku ^{[4
]}

Koskinen-Soivi, Mari-Leena ^{[1
]}

Reinikainen, Matti ^{[1
]}

机构：

[1] VTT Tech Res Ctr Finland Ltd, FI-02044 Espoo, Vtt, Finland

[2] Natl Phys Lab, Hampton Rd, Teddington TW11 0LW, Middx, England

[3] Univ Helsinki, Dept Phys, POB 64, FIN-00014 Helsinki, Finland

[4] Univ Helsinki, Finnish Museum Nat Hist, POB 64, FIN-00014 Helsinki, Finland

来源：

ANALYTICAL CHEMISTRY | 2019年 / 91卷 / 19期

基金：

欧盟地平线“2020”; 芬兰科学院;

关键词：

CAVITY RING; CO2; C-14; PRECONCENTRATION; (CO2)-C-14; DIOXIDE; WATER; BAND;

D O I：

10.1021/acs.analchem.9b02496

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In-situ monitoring of radiocarbon emissions is challenging due to the lack of a suitable method for sensitive online detection of this isotope. Here we report on a complete system for automatized continuous on-site monitoring of radiocarbon gaseous emissions from nuclear facilities. By combining radiocarbon detection using mid-infrared cavity ringdown spectroscopy and an advanced sampling system, an elevated amount of radiocarbon in an atmospheric-like gas matrix was detected. Radiocarbon was detected in the form of (CO2)-C-14 after extraction of the carbon dioxide from the air sample. The system is also able to discriminate between radiocarbon in organic or inorganic molecular form by converting (CH4)-C-14 into (CO2)-C-14. This work lays the groundwork for further use of this technology in nuclear facilities for online on-site monitoring of radioactive gaseous emissions as well as future work on in-situ monitoring of atmospheric radiocarbon.

引用

页码：12315 / 12320

页数：6

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