||Simultaneous Determination of Americium and Curium in Soil.
Hiatt, Michael H. ;
Hahn, Paul B. ;
||Environmental Monitoring and Support Lab., Las Vegas, NV.
Soil analysis ;
Radioactive contaminants ;
Chemical analysis ;
Ion exchanging ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||A method is presented for the routine determination of americium and curium in 10 g of soil. The soil is dissolved with a mixture of nitric acid and hydrofluoric acid. Insoluble sulfates and phosphates are metathesized with boiling sodium hydroxide solutions. Plutonium and iron are sorbed on anion-exchange resin from 9 M hydrochloric acid after which the plutonium can be eluted and further purified for electrodeposition. Americium and curium are purified by cation-exchange and liquid-liquid chromatography. Mean recoveries of americium and curium were 58% and 56% respectively, for prepared soil samples. The minimum detectable activity for the individual nuclides is 0.002 pCi/g. For americium and curium activities of 0.1 to 1.0 pCi/g, the relative standard deviations for replicate analysis ranged from 3% to 8%. The deviations of the means from their known values were generally within + or - 3%.
||Pub. in Jnl. Analytical Chemistry, v51 n2 p295-298 Feb 79.
||Reprint: Simultaneous Determination of Americium and Curium in Soil,
|PUB Date Free Form
||14 Sep 78
||8M; 7D; 18H; 68F; 99A; 77G
||PC A02/MF A01