Colloidal forms of radionuclides and their separation from water solution

Kepák, F.

doi:10.1007/bf02516335

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the geochemical mobility of the elements strong ly depends on the environmental and hydro dynamic conditions, uranium and radium can be transported different distances before pre cipitating or co-precipitating (DAVY, 1974;KIRBY, 1974;STARIK, 1956;HARRISON and TAYLOR, 1966;DALL'AGLIO, 1971). In this con text the tendency of polonium isotopes to be strongly adsorbed on impurities or to form col loids in slightly acid or neutral solutions, even tually by hydrolyzing to hydroxides or by an interaction with an impurity in the solution (HAISSINGSKY and TUCK, 1964;KEPAK, 1974) should be mentioned.…”

Section: Ormentioning

confidence: 99%

Radioactive halos as possible indicators for geochemical processes in magmatites.

Meier¹,

Hecker²

1976

Geochem. J.

View full text Add to dashboard Cite

In systematic microscopic measurements completed by fission track studies the occurrence of polonium halos and polonium bands could be confirmed in biotites of different areas. The abundance of the different types of polonium halos is given by the order 210Po ) 218Po > 214po. As magmatic and often also hydrothermal mechanisms are contrary to geological evidences a supergene hypothesis has been supposed for the genesis of the polonium halos. According to this mechanism polonium isotopes are accumulated out of uranium or radium-bearing solutions which are liberated from rocks by leaching processes of percolating weathering waters. The concept of the given origin of polonium halos may be significant in discussing problems of dating, uranium prospection and the origin of secondary uranium deposits.

show abstract

Section: Ormentioning

confidence: 99%

Radioactive halos as possible indicators for geochemical processes in magmatites.

Meier¹,

Hecker²

1976

Geochem. J.

View full text Add to dashboard Cite

show abstract

“…The centrifugation method is frequently used to study the colloidal state of radionuclides [1][2][3][4][5][6][7][8][9][10]. In previous communications [1,2] the formation of colloidal Ce(III) hydroxide in trace concentrations has been found by this method.…”

Section: Introductionmentioning

confidence: 99%

Study of the Behavior of Sb(III) and Tl(III) in Micro- and Macroconcentrations by Centrifugation

Kepák¹,

Talla²

1976

Radiochimica Acta

Self Cite

View full text Add to dashboard Cite

Sb(III) in microconcentrations forms a colloid only to a low extent due to hydrolysis and to adsorption on impurities incidentally present in solution. Sb(III) in microconcentration is less hydrolysed than in macroconcentration. In macroconcentration deeper hydrolysis of Sb(III) leads to the formation of its colloidal basic salt or hydroxide. In microconcentration at pH = 3 the colloid of Tl(III) consists essentially of impurities with adsorbed Tl(III) ; at higher pS. values by thallium hydroxide. In macroconcentration larger and better centrifugable particles of Tl(III)hydroxide are formed than in microconcentration.

show abstract

Colloidal forms of radionuclides and their separation from water solution

Cited by 2 publications

References 7 publications

Radioactive halos as possible indicators for geochemical processes in magmatites.

Radioactive halos as possible indicators for geochemical processes in magmatites.

Study of the Behavior of Sb(III) and Tl(III) in Micro- and Macroconcentrations by Centrifugation

Contact Info

Product

Resources

About