Application of Resonance Ionization Mass Spectrometry for Ultratrace Analysis of Technetium

作者：Schoenberg Pascal; Mokry Christoph; Runke Joerg; Schoenenbach Daniela; Stoebener Nils; Thoerle Pospiech Petra; Trautmann Norbert; Reich Tobias^*

来源：Analytical Chemistry, 2017, 89(17): 9077-9082.

DOI：10.1021/acs.analchem.7b01778

This work shows the ability of resonance ionization mass spectrometry (RIMS) to determine Tc-99g at the ultratrace level. The characterization of the prepared samples by X-ray photoelectron spectroscopy (XPS) and optimization of the RIMS setup for this purpose, as well as the application of the RIMS method to a soil sample, are presented in this article. Tc-97 was used as a tracer isotope to determine the amount of Tc-99g in a soil sample with RIMS. With 8.8 x 10(10) atoms of Tc-97 as the tracer, the concentration of Tc-99g was found to be 1.5 x 10(9) atoms per gram of dried sample material, demonstrating the sensitivity of the method. Furthermore, it could be shown that the Tc-97 solution contained Tc-98 as well. This is the first time that (TC)-T-97,98,99g have been simultaneously measured with RIMS.

• 出版日期2017-9-5