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Project at a Glance Contents on the CD ROM
  • Protactinium  is a chemical element in the periodic table that has the symbol Pa and atomic number is 91 and it is a malleable, shiny, silver-gray radioactive metal that does not tarnish rapidly in air.
  • It is harmful due to its radioactivity and is also toxic and it is one of the rarest and most expensive naturally occurring elements.
  • A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into Lead.
  • Protactinium occurs in vanishingly small quantities in the natural decay chains of uranium and thorium minerals.
  • Most of the protactinium is sourced from thorium that is present in nuclear reactors.
  • Possibilities of using protactinium as a tracer in the fields of geology and pale oceanography have surfaced recently.
  • Protactinium is widely distributed in very small amounts in the earth’s crust,
    and it is one of the rarest and most expensive naturally occurring elements.
  • It does not used for industrial or commercial uses due to its scarcity, expense, and radio toxicity and it only used for scientific research activities.
  • Measurement of femtogram quantities of protactinium
  • Actinide Oxocations from
  • Protactinium
  • Protactinium-radium isotopic data


  • Msds of protactinium


  • Method for separating uranium & protactinium
  • Process for separation of protactinium
  • Liquid-Liquid removal of protactinium
  • Recovery of protactinium
  • Separation of protactinium


  • Facts about protactinium
  • Protactinium facts


  • Production cross-sections of protactinium
  • Extraction of protactinium
  • Installation and operation
  • Protactinium in Galapagos microplate sediments
  • Production of uranium-232 from protactinium
  • Consultancy from UK


  • Approach of the solubility of protactinium
  • Protactinium
  • Protactinium news
  • Properties of protactinium


  • Adsorption of protactinium
  • Behaviour of protactinium
  • Radiochemistry of protactinium
  • Removal from protactinium
  • Separation of protactinium


  • Health effects of protactinium
  • Effect of protactinium


  • Study of protactinium
  • Protactinium dating systematics
  • Study of the effect of chromium on the solvent extraction of protactinium


  • Protactinium-231 dating of carbonates
  • Discovery of the protactinium
  • Separations of Protactinium
  • Protactinium

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