Adsorption of 99m Tc on aluminum oxide

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Abstract

Adsorption of 99m Tc under static and dynamic conditions on aluminum oxides subjected to various acid treatments at pH from 7.29 to 1.26 (until the reaction of the oxide with the acid fully ceased) was studied. In batch experiments, the maximal adsorption of 99m Tc, more than 30% of the radionuclide activity, is attained with the oxide that absorbed 2 × 10-4 mol g-1 acid. The "rate" of linear migration of 99m Tc in a chromatographic column in the course of elution with a 0.9% NaCl solution under the conditions of limiting saturation of the oxide with the acid is 0.49-0.52 cm ml-1. It is concluded that the observed deceleration of the 99m Tc elution from the generator column is due to its "braking" by active sites of the oxide. Upon reduction of 99m Tc with bivalent tin, its adsorption increases to 93.53%. The results obtained are of interest for the development of procedures for depositing 99m Tc onto the surface of nanosized colloidal particles of aluminum oxide for their subsequent use in medical diagnostics.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalRadiochemistry
Volume53
Issue number5
DOIs
Publication statusPublished - Oct 2011

Fingerprint

Aluminum Oxide
Oxides
aluminum oxides
Adsorption
acids
elution
adsorption
Acids
oxides
Saturation (materials composition)
braking
Tin
Deceleration
deceleration
Braking
Radioisotopes
radioactive isotopes
tin
generators
saturation

Keywords

  • active centers
  • adsorption
  • aluminum oxide
  • molybdenum
  • technetium-99m

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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title = "Adsorption of 99m Tc on aluminum oxide",
abstract = "Adsorption of 99m Tc under static and dynamic conditions on aluminum oxides subjected to various acid treatments at pH from 7.29 to 1.26 (until the reaction of the oxide with the acid fully ceased) was studied. In batch experiments, the maximal adsorption of 99m Tc, more than 30{\%} of the radionuclide activity, is attained with the oxide that absorbed 2 × 10-4 mol g-1 acid. The {"}rate{"} of linear migration of 99m Tc in a chromatographic column in the course of elution with a 0.9{\%} NaCl solution under the conditions of limiting saturation of the oxide with the acid is 0.49-0.52 cm ml-1. It is concluded that the observed deceleration of the 99m Tc elution from the generator column is due to its {"}braking{"} by active sites of the oxide. Upon reduction of 99m Tc with bivalent tin, its adsorption increases to 93.53{\%}. The results obtained are of interest for the development of procedures for depositing 99m Tc onto the surface of nanosized colloidal particles of aluminum oxide for their subsequent use in medical diagnostics.",
keywords = "active centers, adsorption, aluminum oxide, molybdenum, technetium-99m",
author = "Skuridin, {V. S.} and Elena Sergeevna Stasyuk and Nesterov, {E. A.} and Vladimir Leonidovich Sadkin and Rogov, {A. S.}",
year = "2011",
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language = "English",
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pages = "529--533",
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T1 - Adsorption of 99m Tc on aluminum oxide

AU - Skuridin, V. S.

AU - Stasyuk, Elena Sergeevna

AU - Nesterov, E. A.

AU - Sadkin, Vladimir Leonidovich

AU - Rogov, A. S.

PY - 2011/10

Y1 - 2011/10

N2 - Adsorption of 99m Tc under static and dynamic conditions on aluminum oxides subjected to various acid treatments at pH from 7.29 to 1.26 (until the reaction of the oxide with the acid fully ceased) was studied. In batch experiments, the maximal adsorption of 99m Tc, more than 30% of the radionuclide activity, is attained with the oxide that absorbed 2 × 10-4 mol g-1 acid. The "rate" of linear migration of 99m Tc in a chromatographic column in the course of elution with a 0.9% NaCl solution under the conditions of limiting saturation of the oxide with the acid is 0.49-0.52 cm ml-1. It is concluded that the observed deceleration of the 99m Tc elution from the generator column is due to its "braking" by active sites of the oxide. Upon reduction of 99m Tc with bivalent tin, its adsorption increases to 93.53%. The results obtained are of interest for the development of procedures for depositing 99m Tc onto the surface of nanosized colloidal particles of aluminum oxide for their subsequent use in medical diagnostics.

AB - Adsorption of 99m Tc under static and dynamic conditions on aluminum oxides subjected to various acid treatments at pH from 7.29 to 1.26 (until the reaction of the oxide with the acid fully ceased) was studied. In batch experiments, the maximal adsorption of 99m Tc, more than 30% of the radionuclide activity, is attained with the oxide that absorbed 2 × 10-4 mol g-1 acid. The "rate" of linear migration of 99m Tc in a chromatographic column in the course of elution with a 0.9% NaCl solution under the conditions of limiting saturation of the oxide with the acid is 0.49-0.52 cm ml-1. It is concluded that the observed deceleration of the 99m Tc elution from the generator column is due to its "braking" by active sites of the oxide. Upon reduction of 99m Tc with bivalent tin, its adsorption increases to 93.53%. The results obtained are of interest for the development of procedures for depositing 99m Tc onto the surface of nanosized colloidal particles of aluminum oxide for their subsequent use in medical diagnostics.

KW - active centers

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KW - molybdenum

KW - technetium-99m

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