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Colaboraciones
Figura 3. Evolución temporal del % 239+240Pu lixiviado para la partícula SPTK 1.
Figura 4. Evolución temporal del cociente 238Pu/239+240Pu en el experimento de lixiviación de la partícula SPTK 1.
Figura 5. Evolución temporal del cociente 241Am/239+240Pu en el experimento de lixiviación de la partícula SPTK 1.
Figura 6. Comparación de la evolución temporal del % 239+240Pu lixiviado para las partículas SPTK 1 y Trinitite.
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analizados para el 241Am. En la Figura 5 se ha representado la evolución temporal del cociente 239+240Pu/241Am, observándose como en las etapas iniciales del proceso de lixiviación y de nuevo dentro de los muy bajos porcentajes lixiviados, se observa una mayor lixiviación de 241Am que de 239+240Pu. El 241Am presen- te en la partícula tiene su origen fundamental en la desintegra- ción de su progenitor 241Pu, lo que puede facilitar su disolución.
Comportamiento similar al detallado para la partícula SPTK 1 en el experimento de lixiviación se ha observado en los experi- mentos de lixiviación realizados con la segunda partícula calien- te de Semipalatinsk (SPTK 2) y con la partícula Trinitite. El origen y proceso de formación de esas partículas justifican su comporta- miento altamente refractario y el paso de un porcentaje mínimo de los transuránidos analizados a disolución en los experimentos de lixiviación. Ahora bien, dentro de los bajos porcentajes de lixiviación observados, destacaremos los valores superiores ob- tenidos con la partícula caliente Trinitite en comparación con la partícula caliente SPTK 1, tal y como se observa en la Figura 6.
conclusiones
Los experimentos de laboratorio de lixiviación de partículas calientes originadas en pruebas nucleares realizadas en Se- mipalatinsk y Nevada ponen de manifiesto el carácter funda- mentalmente refractario de dichas partículas. La proporción de transuránidos puestos en disolución en estos experimentos de lixiviación con 0.16 M HCl, ponen de manifiesto que en el caso de ingestión inadvertida de dichas partículas, una pro- porción mínima en su contenido en transuránidos pasarían a incorporase al cuerpo humano, lo que tiene que ser tenido en consideración para una apropiada evaluación dosimétrica.
referenciAs
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\[1\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\] “Sources Contributing to Radionuclides in the Environment: With Fo- cus on Radiactive Particles” (Book Chapter). Salbu, B.,Skipperud L. and Lind, O.C.(2015) Radionuclides in the environment: Influence of Chemical Speciation and Plant Uptake on Radionuclide Migration. Pp 1-36.
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\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\[5\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\] “Characterisation of plutonium contamination at the former nuclear testing range at Maralinga in South Australia.” Cooper, M.B., Burns, P.A., Tracy, B.L., Wilks, M.J., Williams, G.A., 1994.Journal of Ra- dioanalytical and Nuclear Chemistry177, 161–184.
AgrAdecimientos
La supervisión y dirección de este trabajo por los doctores Ignacio Vioque, Guillermo Manjón y Rafael García-Tenorio es profundamente agradecida.
J.A. Galván Moreno • RADIOPROTECCIÓN • No 90 • Diciembre 2017