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Application of ICP-MS for the assessment of thorium excretion in urine
1GSF-Forschungszentrum für Umwelt und Gesundheit mbH, Institut für Strahlenschutz, Germany.
Abstract:
A method for rapid and sensitive determination of thorium in urine by inductively coupled plasma mass spectometry (ICP-MS) is described. The method is sufficiently sensitive to detect 1 ng/L 232Th in urine without any sample preparation. The mean urinary 232Th excretion in 23 unexposed subjects was 6.2 +/- 3.3 ng/d.