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- W2034676132 abstract "A neutron activation method for the rapid determination of dysprosium in rocks, based on simple chemical separation and γ-spectrometry with a lithiumdrifted germanium detector, is described. The 94.7-keV photopeak of dysprosium-165 (2.3 h half-life) was measured. Several geochemical standard rocks covering a variety of rock types were analyzed. The detection limit was 0.005 μg of dysprosium. A precision of ±4.7% was obtained on 7 separate analyses of a basalt standard rock. The accuracy of the method is discussed. On décrit une méthode de dosage rapide du dysprosium dans des roches par spectrométrie gamma à l'aide d'un détecteur Ge(Li), après séparation chimique. On mesure le photopic du dysprosium-l65 94.7-keV (période de 2.3 h). On a analysé ainsi plusieurs standards géochimiques. On arrive à une limite de détection de 0.005 μg de dysprosium. Une précision de ± 4.7% est obtenue avec 7 analyses séparées d'une roche standard. Es wird eine neutronenaktivierungsanalytische Methode zur schnellen Bestimmung von Dysprosium in Gesteinen beschrieben. Dabei wird der 94.7-keV Photopeak des Dyprosium-165 (2.3 h) γ-spektrometrisch mit einem Lithium-gedrifteten Germanium-Detektor gemessen. Zahlreiche verschiedene geochemische Standardgesteine werden analysiert. Die Genauigkeit der Methode wird diskutiert. Ihre Reproduzierbarkeit beträgt ±4.7%. Als Nachweisgrenze ergab sich 0.005 μg Dysprosium." @default.
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- W2034676132 date "1968-01-01" @default.
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- W2034676132 title "Rapid determination of dysprosium in rock samples by neutron activation analysis with a ge(li) detector after chemical separation" @default.
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- W2034676132 doi "https://doi.org/10.1016/s0003-2670(01)80330-5" @default.
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