Determination of Ultratrace Level 135Cs and 135Cs/137Cs Ratio in Small Volume Seawater by Chemical Separation and Thermal Ionization Mass Spectrometry

The atomic ratio of 135Cs/137Cs is a powerful fingerprint for distinguishing the source terms of radioactive contamination and tracing the circulation of water masses in the ocean. However, the determination of the 135Cs/137Cs ratio is very difficult due to the ultratrace level of 135Cs (

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Veröffentlicht in:	Analytical chemistry (Washington) 2020-05, Vol.92 (9), p.6709-6718
Hauptverfasser:	Zhu, Liuchao, Xu, Changkun, Hou, Xiaolin, Qiao, Jixin, Zhao, Yonggang, Liu, Guorong
Format:	Artikel
Sprache:	eng
Schlagworte:	Ammonium Analytical chemistry Atomic properties Barium Cation exchange Cation exchanging Cesium Cesium 137 Cesium isotopes Cesium radioisotopes Chemical analysis Chemical separation Chemistry Chromatography Column chromatography Decontamination Detection limits Ionization Ions Low level Mass spectrometry Mass spectroscopy Nuclear accidents Nuclear power plants Polyacrylonitrile Radioactive contamination Radioactive fallout Radioactive pollution Radioactive tracers Rubidium Scientific imaging Seawater Spectroscopy Water analysis Water circulation
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Beschreibung
Zusammenfassung:	The atomic ratio of 135Cs/137Cs is a powerful fingerprint for distinguishing the source terms of radioactive contamination and tracing the circulation of water masses in the ocean. However, the determination of the 135Cs/137Cs ratio is very difficult due to the ultratrace level of 135Cs (
ISSN:	0003-2700 1520-6882
DOI:	10.1021/acs.analchem.0c00688