Citation:

Outola, I., K. Inn, R. G. FORD, S. Markham, AND P. Outola. Optimizing Standard Sequential Extraction Protocol With Lake And Ocean Sediments. T. Braun (ed.), Journal of Radioanalytical and Nuclear Chemistry. Springer, New York, NY, 282(2):321-327, (2009).

Impact/Purpose:

To evaluate the robustness of the method utilizing the information obtained in these two trials.

Description:

The environmental mobility/availability behavior of radionuclides in soils and sediments depends on their speciation. Experiments have been carried out to develop a simple but robust radionuclide sequential extraction method for identification of radionuclide partitioning in sediments and soils. The sequential extraction protocol was optimized for temperature, concentration of reagents and reaction time. Optimum extraction conditions were chosen based on the release of ^239,240PU, ²³⁸U and stable elements. Results from the experiments with lake sediment (SRM 4354) are compared to the previous trials where the sequential extraction protocol was optimized with the ocean sediment (SRM 4357). Based on these two trials the NIST standard sequential extraction protocol is established for defined extraction settings for temperature, reagent concentration and time.

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