Manipulation of radioactive gases in high vacuum apparatus

Wilson, Elizabeth

doi:10.1016/0042-207x(54)90125-6

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1955

1969

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Cited by 6 publications

References 39 publications

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Das Trennrohr XXVI. Die Konzentrationsverteilung polynärer isotoper Gemische im geschlossenen Trennrohr

Clusius

Varde

1963

Helvetica Chimica Acta

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Gef. C 79,46 H 9,82 0 10,71O,(" Eine Bz-Losung der vereinigten ML (120 mg aus 260 mg Glykol VI) wurde an 3,6 g A1,0, chromatographiert. Bz-Chf-(4: 1) und 4 3 : 7) eluierten 50 mg VIIa. Kristallisation a u s An-He gab weitere 45 mg (Gesamtausbeute 72%) 14a-Methyltestosteron (VIla) vom 50 mg VIIa (ML aus Umkristallisation) wurden in 8 ml Py und 6 ml Propionsaureanhydrid gelost. Ndch 24 Std. bei ZT wurden die Losungsmittel im Vakuum entfernt und der Ruckstand an 4 g A1,03 chromatographiert. Bz-He-(3 : 2) und Bz eluierten 60 nig VIIb. Kristallisation aus He gab 30 mg Plattchen vom Smp. 149-150"; [a12 = +120,9" (c = 0,42). C2zH,,0, (358,50) Ber. C 77,05 H 9,56 0 13,39% Gef. C 77.09 H 9,33 0 13,42% SUMMARYEmploying a twenty-step reaction sequence, lanosterol has been degraded to 14~-methyl-testosterone. Possible formation of 14x-methylsteroids in vivo is discussed.

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Das Trennrohr XXVI. Die Konzentrationsverteilung polynärer isotoper Gemische im geschlossenen Trennrohr

Clusius

Varde

1963

Helvetica Chimica Acta

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Preparation of tritiated water, sulfuric acid and trifluoroacetic acid

Dugger¹,

Schwarz²

1967

J. Labelled Cpd. Radiopharm.

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SUMMARYA safe, eficient and inexpensive method for preparing small quantities of tritiated water, sulfuric acid and trifluoroacetic acid is described. The preparation involves introducing the preassayed tritium sample into a carrier gas, 0.5% hydrogen in air, passing over a palladium catalyst heated to 800° C. The resulting tritiated water is gradually eluted from the catalyst and collected in suitable traps.

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Applications of vacuum technique in atomic energy research

Turnbull¹

1955

Vacuum

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Manipulation of radioactive gases in high vacuum apparatus

Cited by 6 publications

References 39 publications

Das Trennrohr XXVI. Die Konzentrationsverteilung polynärer isotoper Gemische im geschlossenen Trennrohr

Das Trennrohr XXVI. Die Konzentrationsverteilung polynärer isotoper Gemische im geschlossenen Trennrohr

Preparation of tritiated water, sulfuric acid and trifluoroacetic acid

Applications of vacuum technique in atomic energy research

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