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Updated: Sep 29, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides
Published on: May 20, 2019
Determination of 235U and 238U in urine samples using sector field inductively coupled plasma mass spectrometry
1GSF - Research Centre for Environment and Health, Institute of Ecological Chemistry, D-85758 Neuherberg, Germany.
Abstract:
The high sensitivity of SF-ICP-MS (sector field inductively coupled plasma mass spectrometry) using a torch with the "guard-electrode" (capacitive decoupled plasma) allows the determination of 238U (isotope abundance 99.2%) and 235U (0.8%) and their isotope ratio in human urine samples down to the physiological level of <10 ng/l total uranium. For sample preparation UV photolysis was used. Some quality criteria like for the detection limit, the reproducibility, recovery and the isotope ratio are given. The method can be applied in occupational as well as in environmental medicine because of its outstanding detection power.
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