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242Pu as tracer for simultaneous determination of 237Np and 239,240Pu in environmental samples

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Abstract

A procedure has been developed using 242Pu as tracer for simultaneous determination of 237Np and 239,240Pu in environmental samples. The validity of the method has been demonstrated by ICPMS and a-spectroscopy for up to 10 gram soil and sediment, seawater up to 200 litres. The paper describes a suitable chemical procedure for Np and Pu including a quantitative pre-concentration of neptunium and plutonium, preparation of Np4+ and Pu4+, Np(NO3)6 2- and Pu(NO3)6 2-. The ratio of 237Np/242Pu (or 237Np/239Pu) before and after the procedure has been determined using 10 g soil (free from Np and Pu) R before/R after = 1.004±3.3% (S.D n = 20) and 1 litre seawater R before/R after = 1.019±1.9% (S.D., n = 12). Results from the intercomparison samples IAEA-135, IAEA-381 and from environmental samples are presented.

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Authors and Affiliations

  1. Department of Nuclear Safety Research, Risø National Laboratory, DK-4000, Roskilde, Denmark

    Qingjiang Chen, H. Dahlgaard, S. P. Nielsen & A. Aarkrog

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  1. Qingjiang Chen
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  2. H. Dahlgaard
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  3. S. P. Nielsen
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  4. A. Aarkrog
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Chen, Q., Dahlgaard, H., Nielsen, S.P. et al. 242Pu as tracer for simultaneous determination of 237Np and 239,240Pu in environmental samples. Journal of Radioanalytical and Nuclear Chemistry 253, 451–458 (2002). https://doi.org/10.1023/A:1020429805654

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  • DOI: https://doi.org/10.1023/A:1020429805654

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