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Application of Resonance Ionization Mass Spectrometry for Ultratrace Analysis of Technetium.

Analytical Chemistry 2017 September 6
This work shows the ability of resonance ionization mass spectrometry (RIMS) to determine (99g)Tc 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. (97)Tc was used as a tracer isotope to determine the amount of (99g)Tc in a soil sample with RIMS. With 8.8 × 10(10) atoms of (97)Tc as the tracer, the concentration of (99g)Tc was found to be 1.5 × 10(9) atoms per gram of dried sample material, demonstrating the sensitivity of the method. Furthermore, it could be shown that the (97)Tc solution contained (98)Tc as well. This is the first time that (97,98,99g)Tc have been simultaneously measured with RIMS.

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