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- W2022172055 abstract "Methods are described for the determination of gallium and molybdenum in biological material using the technique of activation analysis. The limits of detection are 3 × 10−10 g for gallium and 10−7 g for molybdenum. The method has been used to determine these elements in tomato seeds and in whole blood. Tomato seeds normally contain about 0·01 p.p.m. of gallium and 1–3 p.p.m. of molybdenum, but the latter element can be reduced by at least 95 per cent by growing the plants under conditions of molybdenum deficiency. 100 ml of blood contains about 0·05 μg of gallium and 1·4 μg of molybdenum. Des méthodes sont décrites pour le dosage du gallium et du molybdène dans le matériel biologique, employant la technique de l'analyse à activation. Les limites de dosage sont 3 × 10−10 g pour le gallium et 10−7 g pour le molybdène. La méthode a servi au dosage de ces éléments dans les graines de tomate et dans le sang entier. Les graines de tomate contiennent ordinairement environ 0,01 p.p.m. de gallium et 1–3 p.p.m. de molybdéne, mais ce dernier élément peut se diminuer de 95 pour cent au moins si on fait pousser les plantes sous des conditions de manque de molybdène. 100 ml de sang contient environ 0,05 μg de gallium et 1,4 μg de molybdène. Oпиcaны мeтoды oпpeдeлeния coдepжaния гaллия и мoлибдeнa в биoлoгичecкиx oбъeктax c лoмoщью тxники aктивaциoннoгo aнaлизa. Пopoг чyвcтвитeльнocти cocтaвляeт 3 × 10−10 г для гaллия и 10−7 г для мoлибдeнa. Meтoд пpимeнeн для oпpeдeлeния coдepжaния этиx элeмeнтoв в ceмeнax тoмaтoв и в цeльнoй кpoви. Ceмeнa тoмaтoв oбычнo coдepжaт 0,001% гaллия и0,1–0,3% мoлибдeнa. Кoличecтвo пocлeднeгo мoжeт быть, oднaкo, yмeньщeнo пo кpaйнeй мepe нa 95% пyтeм выpaщивaния pacтeний в ycлoвияx мoлибдeнoвoй нeдocтaтoчнocти. B 100 мл кpoви coдepжитcя oкoлo 0,05 μг гaллия и 1,4 μг мoлибдeнa. Methoden zur Bestimmung von Gallium und Molybden in biologischer Materie mit Hilfe der Methode der Aktivierungsanalyse werden beschrieben. Die Nachweisgranze für Molybden beträgt 3 . 10−10 g Die Methode wurde zum Nachweis dieser Elemente in Samen von Tomatenpflanzen und in Blutproben verwendet. Normale Tomatensamen enthalten etwa 10−8 g Ga/g Substanz und etwa bis 3–10−6 g Mo/g Substanz, wobei für letzteres eine Abnahme von mindestens 95% erzeilt werden kann, wenn die Pflanzen unter Molybdenmangelbedingungen aufgezogen werden. 100 ccm Blut enthalten etwa 00,5 μg Ga und 1,4 μg Mo." @default.
- W2022172055 created "2016-06-24" @default.
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- W2022172055 date "1959-05-01" @default.
- W2022172055 modified "2023-09-23" @default.
- W2022172055 title "The determination of gallium and molybdenum in biological material by activation analysis" @default.
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- W2022172055 doi "https://doi.org/10.1016/0020-708x(59)90235-2" @default.
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