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Abstract

The evolution of trace concentrations of uranium in aqueous reference solutions was followed over time by isotope dilution inductively coupled plasma mass spectrometry (ID ICP-MS). Blank levels and detection limits needed to be determined prior to the actual investigations. Accuracy and precision of the method were determined on the basis of results obtained for uranium reference materials under similar experimental conditions. Reference solutions, certified for uranium concentration were prepared on a gravimetrical basis.
Analyses were performed over a period of 2 years. Taking into account the accuracy and the precision which were achieved, no significant change of the concentration was observed with time. Therefore, the mid and long term stability of the concentration of such reference materials was successfully demonstrated.

Additional information

Authors: AGARANDE M, JRC Geel (BE);MAYER K, JRC Geel (BE);DE BIEVRE P, JRC Geel (BE)
Bibliographic Reference: Paper presented: 26th International Symposium of Environmental Analytical Chemistry, Wien (AT), April 1996
Availability: Available from (1) as Paper EN 39602 ORA
Record Number: 199610598 / Last updated on: 1996-05-27
Category: PUBLICATION
Original language: en
Available languages: en