The radiochemistry of thorium by Earl K Hyde; National Research Council (U.S.). Committee on
By Earl K Hyde; National Research Council (U.S.). Committee on Nuclear Science. Subcommittee on Radiochemistry
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Extra resources for The radiochemistry of thorium
Example text
Gmlof 6NNaOHforl gmTh). Continue the Dagmar* extractionfor 15-20 minutes nmre. 1 N EINO Drain off the aqueous wash. 230 Back extract the ginof Th 3. Prom orgsnic phase with 8 N HN03-10 m. Repeat back extraction. (lXi~r extractionseparatesThfromalJ fission 230 products except =. on the anion Zr was previously separatedfrom Th resin column. ) Recipitate Th(OH)L with NHhOH, Wesh precipitate. * Ikgmr refers to the ~-diketone reagent[1-(3,4-dic~oro~yl) heptafluoro-1,3hexenedione]. ) Ignite precipitateto Th02 in l% crucible tith ~ter c~led Inductim coil in glove box.
W enter the resin colunm. must not be permitted to If air does inter, the resin is realurried to renmve air bubbles. The cation columm pe~red as deacrlbed above Is uaahed tith 2-3 ml. of 3M HCIOk and is then rea~ for uae. 3. h peek”in the 83-87 channel regia. W. A. Wtmtz Los AIEms repro-t Determinant ion of Ionium h 1. in “CollectedRadiochemical IA-1~. Jan. 1958. Procedures” Old Fission Pro&ct ltst- al. aSthe plutmium present In the latter co=s through the sepamtion procedure and seriously titeref&es in pulse analysea.
Rmr ml of staurated ‘2c204 than added and the solution is boiled for 2 min. The thorium oxelete precipltete is ffltered through No. 42 Whetsmn fflter pper (9 cm) in a 2“, 60° fuunel and washed uith about 1 p=rcent H2C20b solution (the saturatedsolution is dfluted 1 to 10). The precipitateis transferredto a tared porcekln crucible (Coors 000) and is carefully ignited at gOOO for 1 hour. The carrier Is weighed aa Th02. 5. 0 ml of standard Th carrierj add the flsBlon product eolutionand 5 drop of La carrier.