A study on the separation and distribution of the chemical forms of131I produced from thermal neutron-irradiated tellurium compounds by thin-layer chromatography

Maki, Yasuyuki

doi:10.1007/bf02517445

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…Durante a dissolução há a liberação de H2(g), resultante da dissolução do Al, e dos gases Xenônio, Criptônio, Iodo e Rubídio, produtos de fissão. No final do processo, encontram-se no filtrado: 99 Mo, 132 Te, 127m Te, 133 I, 141 Ce, 143 Ce, 125 Sb, 103 Ru, 106 Ru, 95 Zr, 95 Nb, 89 Sr, 91 Sr, 137 Cs, 136 Cs. Já no material sólido retido no filtro tem-se principalmente: rejeito sólido inorgânico, 235 U, 141 Ce, 143 Ce, 140 La, 143 Pr, 147 Nd, 105 Ru, 95 Zr, 127 Sb, 125 Sb.…”

Section: Molibdênio-99unclassified

“…Devido às características físico-químicas do telúrio, a separação do radioisótopo produzido por meio da irradiação com nêutrons dos compostos deste elemento, pode ser feita por meio da evaporação em processos úmidos, onde a separação do 131 I é facilitada quando a solução escolhida é ácida e também por meio de agentes oxidantes, pois em solução alcalina o radioisótopo, que é um íon negativo, permanece fortemente ligado ao cátion da solução [133][134][135][136][137] , ou então por meio de processos a seco onde a separação se dá pela sublimação direta do 131 I retido no próprio alvo [138][139][140] .…”

Section: Separação Do 131 I Obtido Por Meio De Compostos De Telúriounclassified

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Desenvolvimento de instalação para processamento de radioisótopos de utilização médica

Perini¹

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Cancer is a devastating disease that harms individuals, families, and society. Early diagnosis and effective treatments are extremely important for all. One of the most widely used pathways for diagnosis and treatment depends on radioactive isotopes. Before treatment, sealed radioactive sources are inserted close to inside the tumor by means of temporary or permanent implants, a technique known as brachytherapy. Iridium-192 is among the most used isotopes. In diagnosis, radioisotopes with a short half-life (of a few minutes or hours) are injected into the patient. The radiation goes through biological tissues and is detected by equipment external to the patient, allowing the physician to visualize the exact location of the disease. Among the most used, are iodine-131 and molybdenum-99. The production domain of these materials turns a country independent in the diagnosis / treatment of cancer. The molybdenum-99 supply crisis showed Brazil that there is a need to control the production of these materials. This thesis aims to present a conceptual plan for the building for processing such isotopes, inspired by the existing industrial radiopharmacy facility at IPEN in São Paulo. The experiences of researchers in the area, knowledge gained from technical visits to other facilities, and information acquired in congresses and technical meetings, were used. In this context, the blueprint of the processing building, the process used inside the production cells (for molybdenum-99, iridium-192, and iodine-131), and the conceptual design of the ventilation system were presented. Using the blueprint as a base, the following were also presented: all items of the installation; the classification of the radioactive area and the location of the area monitors; access for maintenance, personnel and material; and the air flow and classification plant. All of these items directly impacted the final installation layout. It is hoped that the work and concepts used will serve as a reference for the future construction of such an installation.

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Section: Molibdênio-99unclassified

Section: Separação Do 131 I Obtido Por Meio De Compostos De Telúriounclassified

Desenvolvimento de instalação para processamento de radioisótopos de utilização médica

Perini¹

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Separation and preconcentration of131I− and131IO 3 − in a liquid-liquid system

Palágyi¹

1991

Journal of Radioanalytical and Nuclear Chemistry, Articles

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Transport parameters of I− and IO3 − determined in crushed granitic rock columns and groundwater system under dynamic flow conditions

Palágyi

Ştamberg

2014

J Radioanal Nucl Chem

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A study on the separation and distribution of the chemical forms of131I produced from thermal neutron-irradiated tellurium compounds by thin-layer chromatography

Cited by 4 publications

References 13 publications

Desenvolvimento de instalação para processamento de radioisótopos de utilização médica

Desenvolvimento de instalação para processamento de radioisótopos de utilização médica

Separation and preconcentration of131I− and131IO 3 − in a liquid-liquid system

Transport parameters of I− and IO3 − determined in crushed granitic rock columns and groundwater system under dynamic flow conditions

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