Desarrollo de un método analítico para medir isótopos de Pu en muestras de suelo como desechos radiactivos
The aim of this work is to optimize the radiochemical separation of plutonium (Pu) of soil samples classified as radioactive waste and determine their concentration. Soil samples were prepared using acid digestion assisted by microwaves; then, Pu purification was carried out with Pu AG1X8 resin. Pu...
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| Format: | master thesis |
| Status: | Published version |
| Publication Date: | 2016 |
| Country: | México |
| Institution: | Universidad Autónoma de Zacatecas |
| Repository: | Repositorio Institucional Caxcán |
| Language: | Spanish |
| OAI Identifier: | oai:http://ricaxcan.uaz.edu.mx:20.500.11845/1351 |
| Online Access: | http://ricaxcan.uaz.edu.mx/jspui/handle/20.500.11845/1351 |
| Access Level: | Open access |
| Keyword: | CIENCIAS FISICO MATEMATICAS Y CIENCIAS DE LA TIERRA [1] Plutonio Suelo Separación Radioquímica ICP-SFMS Desechos radiactivos Plutonium Soil Radiochemical separation Radioactive waste |
| Summary: | The aim of this work is to optimize the radiochemical separation of plutonium (Pu) of soil samples classified as radioactive waste and determine their concentration. Soil samples were prepared using acid digestion assisted by microwaves; then, Pu purification was carried out with Pu AG1X8 resin. Pu isotopes were measured using Mass Spectrometry with Magnetic Sector with Inductively Coupled Plasma source (ICP-SFMS). In order to reduce the interference due to the presence of 238UH+ in the samples a desolvation system (Apex) was used. The limit of detection (LOD) of Pu was determined. The efficiency of Pu recovery from soil samples varies from 70 to 93%. This work was done at ININ, within the LANAFONU, under the direction of Dr. Héctor Hernández Mendoza and Dr. Héctor René Vega Carrillo and the supervision of Dr. Elizabeth Teresita Romero Guzman. The illicit traffic of special nuclear materials or radioactive substances are one of the nowadays disadvantages, that are overcome using several strategies such as the physical protections, the nuclear materials accounting, the security strategies and the design of emergency plans. With the interest of CONACYT, the Mexican Energy Secretary and the ININ the National Laboratory in Nuclear Forensics (LANAFONU) was built in order to develop radiochemical methods to measure long half-life radionuclides in biological and environmental samples as well as to evaluate the exposure due to the manipulation and transport on nuclear materials. |
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