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13 Result(s)

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  1. No Access

    Article

    Preconcentration and neutron activation analysis of thorium and uranium in natural waters

    Uranium and thorium were analyzed in commercial bottled waters and in fresh waters, such as tap water, by neutron activation analysis. The analysis was applied after a preconcentration step from a batch of 1–3 dm

    M. T. Valentini Ganzerli, L. Maggi… in Journal of Radioanalytical and Nuclear Che… (2004)

  2. No Access

    Article

    The role of salts derived from benzilic acid and quinolines in the adsorption of some actinides

    The adsorption conditions of uranium, neptunium, thorium, europium on the adsorbers containing the benzylate salts of the 8-hydroxyquinoline (adsorber B), and of 2-methyl- 8-hydroxyquinoline (adsorber R), were...

    M. T. Valentini Ganzerli… in Journal of Radioanalytical and Nuclear Che… (2004)

  3. No Access

    Article

    The role of salts derived from benzilic acid and quinolines in the adsorption of some actinides Part I: Characterization of the adsorbers

    The salt of the 8-hydroxyquinoline and benzilic (diphenylglycolic) acid was prepared and incorporated into active charcoal in order to have an adsorber able to concentrate actinides dispersed in natural waters...

    M. T. Valentini Ganzerli… in Journal of Radioanalytical and Nuclear Che… (2004)

  4. No Access

    Article

    Adsorption of actinides by chelating agents containing benzene rings, fixed on charcoal

    We studied the preparation of some specific adsorbers capable of isolating and concentrating actinides. Bases of the 8-hydroxyquinoline family, diphosphineamine and tribenzylamine, salted by benzohydroxamic, b...

    M. T. Valentini Ganzerli… in Journal of Radioanalytical and Nuclear Che… (2002)

  5. No Access

    Article

    Use of inorganic adsorbers in radium analysis

    Two new simple methods were studied for the analysis of radium in fresh waters by concentration and purification. Both methods are based on the use of an inorganic selective adsorber, namely basic lead rhodizo...

    M. T. Valentini Ganzerli… in Journal of Radioanalytical and Nuclear Che… (1998)

  6. No Access

    Article

    Characterisation of lead rhodizonate as barium and radium adsorber from fresh water

    A new adsorber for concentrating barium and radium from diluted solutions and from fresh waters was prepared. It consists of basic lead rhodizhonate, namely [Pb(OH)]2C6O6·PbC6O6·H2O, supported on activated charco...

    M. T. Valentini Ganzerli, L. Maggi… in Journal of Radioanalytical and Nuclear Che… (1997)

  7. No Access

    Article

    Characterisation of lead rhodizonate as barium and radium adsorber from fresh water

    Batchwise measurement of distribution coefficients of earth alkaline metals, on LERHO, lead rhodizonate supported on charcoal, were studied. The adsorption appears to be related to solubility of barium and lea...

    M. T. Valentini Ganzerli, L. Maggi… in Journal of Radioanalytical and Nuclear Che… (1997)

  8. No Access

    Article

    A novel approach to Ca-Sr separation in the determination of90Sr using inorganic exchangers: An application to environmental samples

    A procedure for90Sr determination in calcium rich samples is presented. It is based on the precipitation of calcium oxalate in homogeneous solution and under controlled conditions to minimize the coprecipitation ...

    R. Stella, M. T. Ganzerli Valentini… in Journal of Radioanalytical and Nuclear Che… (1992)

  9. No Access

    Article

    Characterization of copper chromate as a new inorganic exchanger for the isolation of Sr radioisotopes from fission products

    A new inorganic exchanger consisting of the normal copper chromate (CUCR) was prepared and studied: its application to radiochemical separations was explored after batchwise measuring the distribution coeffici...

    R. Stella, M. T. Ganzerli Valentini… in Journal of Radioanalytical and Nuclear Che… (1991)

  10. No Access

    Article

    Characterization of a partially reduced tin(IV) oxide and of its cation exchange properties

    A novel type of tin oxide and its cation exchange properties are described. The preparation of the oxide is rather unusual and consists in the precipitation of SnO·xH2O in the presence of sodium nitroprusside and...

    M. T. Ganzerli Valentini, R. Stella… in Journal of Radioanalytical and Nuclear Che… (1989)

  11. No Access

    Article

    Copper hexacyanoferate(II) and (III) as trace cesium adsorbers from natural waters

    A description is given of the preparation of copper hexacyanoferrate(II) supported on silica granules. The material in this form is suitable for use as adsorber in batch for concentrating trace cesium from cea...

    M. T. Ganzerli Valentini, R. Stella… in Journal of Radioanalytical and Nuclear Che… (1987)

  12. No Access

    Article

    Distribution of minor and trace elements among some Italian chondritic meteorites

    The cobalt, nickel, zinc, selenium, rubidium and cesium content was determined in eight Italian chondritic meteorites by destructive neutron activation analysis. The chemical procedure involves only a few step...

    L. Maggi, S. Meloni, M. T. Ganzerli Valentini… in Journal of Radioanalytical Chemistry (1983)

  13. No Access

    Article

    Some noble metals and copper content of italian meteorites as determined by destructive neutron activation analysis

    Copper, iridium, platinum and gold content was determined in 15 italian chondritic meteorites by destructive neutron activation analysis. The chemical procedure involves few steps: sample dissolution, group se...

    M. T. Ganzerli-Valentini, V. Caramella-Crespi… in Journal of Radioanalytical Chemistry (1977)