= transmitted x-ray beam intensity (counts per second) µ = linear absorption coefficient (cm.-1) pm = mass absorption coefficient (sq. cm. gram-1) µ" = discontinuity or jump in mass absorption coefficient at a critical absorption edge (sq. cm.
Sir: I wish to report a successful application of sodium perxenate, Na4-Xe06, to the analytical oxidation of Am(III) to Am(VI). This work may be the first report of a practical use of this compound.Since the first discoveries that xenon would react with other elements (ß, 8), much research effort has been put forth in this new field of the noble gas compounds.One of these compounds, sodium perxenate, appears to be potentially useful as an analytical reagent.Sodium perxenate was first prepared by Malm, Holt, and Bane (5), who found the compound to be a stable solid under ordinary conditions. Later studies by Appelman and Malm (1) revealed that the compound had a high oxidation potential of about 3 volts in acidic solutions. However, they also found that the reaction Xe(VIII) -*•
Uranium(1V) forms a number of complexes with phosphate, depending upon the relative concentration (6), and also forms agarlike gels which are sometimes called precipitates. These solids LITERATURE CITED
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