Sorbational Concentration And The Following Radio- Analytical Definition Of Micro-quantities

Category: VI Ukrainian-Polish Symposium

Sorbational concentration and the following radio- analytical definition of micro-quantities

of the newly formed radio nuclides

H. Vasylyeva1, V. Strelko1, A. Osypenko2

1ISPE National Academy of Sciences of Ukraine,

Henerala Naumova st. 13, Kyiv, Ukraine

tel: (044) 452-93-28, fax: 452-93-27

2Department of Nuclear Physics, Uzghorod National University,

Pidhirna st. 46, Uzghorod, Ukraine

tel: (03122) 2-97-24

The possibility of concentration of the nuclide 128 I was investigated by various types of coal using chemical methods and the method of the activation analysis.

The optimum conditions of sorption (a temperature, pH of solution) were defined by chemical methods. SKS, SKS(activate) coals as well as two types of lignosulphonate (LS) coal from Arhanhelsk (ordinary and oxidizing coal), were used as sorbent.

The researches have shown that, in general, the increasing of temperature decreases the coefficient of sorption, but pH, except of the interval (pH = 0.5 – 2), influences the process comparatively little. A possibility of sorptional concentration was investigated by the method of the activation analysis. Crystalline iodine was activated by slow neutrons from the reaction 9Be (g, n) on microtrone M-10. As a result 128 I* was formed (T½ = 25 min), which dissociates according to the following scheme:

                             n + 127 І             128 І*

                                       6%                                 94%

      (Т1/2  = 1.5 1024 years) Te                           Xe – stable isotope

The example radiated β-parts with the energy E= 2.12 Mev (76 %) and E=1.665 Mev (15.5 %), as well as g-quantum with the energy E = 0.443 Mev.

Residuum concentration of iodine after its reaction with sorbent was measured according to the intensity of β-spectra of solution with the help of scintillator β-spectrometer with plastic scintillator with the following sizes L = 1 sm and d = 6 sm. A concentrated ability of sorbent was evaluated according to the decrease of β-activity of solution.

The results received by this method showed that SKS(activate) is most suitable for the removal of short live 128 I out of water solution KI.



Related articles::

  • The Peculiarities Of Template Molecular
  • Uranium Extraction By Amorphous Modified Titanium And Zirconium Phosphates
  • The Properties Of The Ion-selective Electrode
  • Study Of The Adsorption Interaction Of
  • Gc-ms Determinaton Of Missile Fuels In Water And Soil By Derivatization With Aromatic Aldehydes
  • A New Quantitative Analysis Of The Surface Energetic Heterogeneity Of Catalyst
  • Studies Of Adsorption Of Aliphatic Alcohols
  • Electrical And Emission Properties Of Slow Doped Copper Films, Prepared By Vacuum Deposition
  • Monitoring Of Sulfide And Heavy Metals Speciation
  • New Sorbents Based On Modified Silica
  • Application Of Chromatographic And Static Methods For Characterizing Of Active Carbons Porosity
  • The Investigation Of The Dependence Of Biological Activity The Group Of Thiobenzanilide Derivatives On Their Lipophilicity
  • Updating The Society, Advancing The Level Of Its Ecological Knowledge And Education - The Integral Part Of Implementation Of “strategic Action Plan Of Revival And Protection Of The Black Sea ”
  • Analysis Of The Excess Adsorption Isotherms For Solid/liquid Systems In Order To Determine The Surface Phase Capacity
  • Modification Of Sorbents For
  • Adsorption Of Water And Organics
  • The Jantti Approach In Case Of A Limited Adsorption With A Single Layer
  • The Studies On The Selective Adsorption Of Some Metal Ions On The Modified Ion Exchangers
  • Kinetics Of Sorption Of Cr((vi)-diphenylcarbazide Complex On Ku-2-8 Cation Exchanger
  • Texture Changes After Oxidative Modification
  • Thermodynamics Of Some Alloys Interaction
  • The Methods Of The Determination Of Bromate
  • Determination Of Diffusion Coefficient
  • Thin Layer Chromatographic
  • Extension Of The Applicability Of Jntti`s Method For Fast Calculation Of Adsorption Data
  • Theoretical And Experimental Studies
  • Use Of Fine-grained Catalytically Active
  • Concentrating And Separating Of Al(iii), Ga(iii) And In(iii) By Their Sorption On Amorphous Silicas
  • H+-mg2+ And H+-ca2+ Exchange Onto Carboxylic Ionites In Terms Of The Exchange Equilibrium Theory