Simple and convenient preconcentration procedure for the isotopic analysis of uranium in seawater

Abstract

Amidoxime adsorbent was synthesised by graft polymerisation. The adsorbent was efficient for collection of U in seawater for both the adsorption and desorption steps, thus affording a new strategy for measurement of U isotopes.

Uranium isotopic analysis in unpurified solutions by ICP-MS

“…Purifications provide two benefits for mass spectrometry analysis by either TIMS or ICP-MS. For samples with high matrix and relatively low uranium contents, the process of purification allows for preconcentration of a relatively small total amount of uranium analyte. 45,46,54–58 The sample load size requirements for TIMS generally requires a high-purity uranium aliquot with techniques used to enhance ionization and detection. 59,60 The presence of additional matrix elements during ICP-MS analysis can create isobaric interferences on uranium masses, 61 as well as impart matrix effects during sample introduction that can affect the accuracy of high precision isotopic data.…”