Radioanalytical determination of 239+240Pu and 241Am in bioassay samples by anion exchange and extraction chromatography: Preliminary considerations about the two methods |
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Authors: | S Ridone D Arginelli G Berton S Bortoluzzi G Canuto M Montalto M Nocente M Vegro |
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Institution: | (1) Italian National Agency for New Technologies, Energy and the Environment, Research Centre of Saluggia, Radiation Protection Institute, strada per Crescentino 41, I-13040 Saluggia (VC), Italy |
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Abstract: | During the radiation protection surveillance of exposed workers samples of urine and faeces were collected. Anion exchange
chromatography was used for the separation of Pu. We investigated a technique to purify and separate Pu and Am isotopes using
extraction chromatography with TRU resin. We tested different procedures to dissolve organic matter and eliminate interferences
for chromatographic elution. At the end of the proces we have succeeded in electroplating the two radionuclides separately.
We have also studied extraction chromatography with UTEVA resin to purify Pu isotopes and separate it from natural uranium
radioisotopes, present in some biological samples. We validated a method for the determination of Pu in biological samples
and a rather constant chemical yield and resolved peaks were obtained. The preliminary studies on TRU resin have indicated
that it is possible to combine extraction and anion-exchange chromatography for analysing separately Pu and Am isotopes from
the same sample aliquote. |
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