University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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NIST 927b

Citations 1

"Flow Injection Method For Determination Of Uranium In Urine And Serum By Inductively Coupled Plasma Mass Spectrometry"
Anal. Chim. Acta 1996 Volume 334, Issue 3 Pages 295-301
Avraham Lorber, Zeev Karpas* and Ludwik Halicz

Abstract: Urine acidified with one-hundredth its volume of HNO3 or untreated serum was injected from a 100 µL loop into a carrier stream comprising 0.6% HNO3 containing 1 g/l of Triton X-100. The stream was passed to the ICP nebulizer and the intensity of the 238U+ signal was measured during a dwell time of 250 ms in the mass spectrometer. The total analysis time was 60 s and a throughput of 50 samples per h was achieved. The detection limit was 1.5 ng/l of U. Memory and matrix effects were reduced by adding the Triton to the carrier. The method was applied to the determination of U in samples taken from a population not occupationally exposed to U or its compounds. The technique was validated by analysis of standard reference materials, by dilution experiments and by laser-induced fluorescence.
Uranium Mass spectrometry Reference material Triton X Surfactant