ISSN:
1588-2780
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Energietechnik
Notizen:
Abstract An accurate and reliable method has been developed and routinely carried out for the sequential determination of239,240Pu and241Am in environmental samples. After suitable pretreatment.239,240Pu and241Am are separated from other elements by means of the anion exchange resin method. Americium-241 is purified by coprecipitation with calcium oxalate and then ion exchanged in mixed media of the mineral acid-methanol. In the analysis,242Pu (or236Pu) and244Cm are used as chemical yield monitors. The recoveries of the yield monitors in the analyses of some kinds of environmental samples were 70∼80% for plutonium and 76∼86% for curium. The concentration of239,240Pu in the coastal sea water were 7.0∼22 μ Bq/l and that of241Am was 1.2∼6.3 μ Bq/l. The mean concentrations of239,240Pu in the edible parts of the marine products ranged from 0.22 to 7.4 mBq/kg · fresh and those of241Am ranged from 0.11 to 2.6 mBq/kg · fresh.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02037450
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