Determination of Pu, Am, U, Th and Sr in marine sediment by extraction chromatography

Determination of 237Np and Pu isotopes in large soil samples by inductively coupled plasma mass spectrometry

“…Chemical yields were good for 10 g samples (99.9% ± 12.6 at 1 SD) and 100 g samples ( 77% ± 12.6 at 1 SD), with decontamination factors of 6.4 x10 4 and 3.8x10 4 A decontamination factor of ~20,000 from uranium was achieved.…”

“…When a soil matrix removal/preconcentration step for larger soil samples is not used, lower actinide yields can occur. Mellado et al [4] reported an analytical method for 2 to 5g marine sediment.samples using TRU Resin ® to separate the actinides. While the overall Pu isotope results for IAEA soil standard were very good, the average chemical yield was only about 40%.…”

Modern Strategies for Environmental Sample Preparation and Analysis

“…In an interesting work, marine sediments were dissolved for the determination of Pu, Am, U, Th, and Sr employing focused-microwave radiation (Mellado et al 2001). The dissolution procedure presented eight steps, using nitric, hydrofluoric and perchloric acids, comprising a total time of 86 minutes when 2 g of sample were treated.…”

Rapid determination of actinides and 90Sr in river water

“…Moreover, each EXC resin has specific affinities for several elements of similar chemical families (e.g., actinides, lanthanides, alkaline earth metals) and oxidation states. Resins such as DGA, TRU, TEVA and UTEVA have been used for the extraction of actinides in environmental matrices [6,7] whereas Sr Spec and DGA have shown useful extraction properties for strontium [8,9]. As EXC can be performed with reduced solvent volume compared to ionic chromatography, which enhance preconcentration while reducing separation time.…”