1958
DOI: 10.1021/ac60135a030
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Certain Rare Earths in Purified Thorium and Uranium Preparations. Chemical Isolation and Spectrographic Determination

Abstract: amounts of the insoluble ruthenium trichloride were not successful. Platinum was successfully chlorinated and recovered in chlorinations under the conditions found optimum for ruthenium.

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Cited by 37 publications
(7 citation statements)
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“…A rotating platform technique was used ( 16) and graphite electrodes (United Carbon Co., Ultra High Purity, No. 106 or 1907) treated with 2% plicene (4) to prevent seepage of the sample into the graphite were used as platform electrodes. Ten microliters of 4% Photo Flo (Eastman Kodak Co., Ltd.) was added to 1 ml.…”
mentioning
confidence: 99%
“…A rotating platform technique was used ( 16) and graphite electrodes (United Carbon Co., Ultra High Purity, No. 106 or 1907) treated with 2% plicene (4) to prevent seepage of the sample into the graphite were used as platform electrodes. Ten microliters of 4% Photo Flo (Eastman Kodak Co., Ltd.) was added to 1 ml.…”
mentioning
confidence: 99%
“…Mg» 0.15 " Chemical. 6 Spectrographic (semiquantitative). Many radioactive mineral occurrences in Canada consist basically of niobium-tantalum ores, containing minerals of the pyrochlore and samarskite series.…”
Section: This Established That Conversion Of Thementioning
confidence: 99%
“…In the present work, a technique has been evolved whereby the only losses are those resulting from volatilization and they are of the same order as in other procedures (6,12,22) (however, the solvent extraction procedures cited deal with microgram amounts of the rare earths, so that it is not strictly fair to compare the losses experienced with those found here).…”
mentioning
confidence: 92%
“…3J. All spectrographic procedures suitable for determining microgram quantities of rare earths in uranium use a preliminary separation and enrichment of the impurities by extraction or ion exchange [4][5][6][7][8][9][10][11]. Although it was considered impossible to obtain the sensitivity desired for atomic purposes (10-5 %) by direct analysis, it seemed worthwhile to investigate the possible limits of detection which could be obtained in the presence of uranium.…”
Section: Introductionmentioning
confidence: 99%