Radiactividad natural y tasas de dosis externas en muestras de relaves de la mina de oro Rosterman, condado de Kakamega, Kenia
Resumen
En este artículo, se evaluaron los resultados documentados de las concentraciones de radionucleidos naturales en los relaves en la mina de oro Rosterman, condado de Kakamega, Kenia. Se recolectaron treinta muestras de relaves de la mina de oro Rosterman según los procedimientos de muestreo estándar y se analizaron para 238U, 232Th y 40K mediante espectroscopía de rayos gamma NaI (TI). Se encontró que las actividades de 238U, 232Th y 40K varían de 39 ± 1,63 Bq / Kg a 118 ± 4,43 Bq / Kg, 72 ± 2,24 Bq / Kg a 223 ± 8,36 Bq / Kg y 85 ± 3,6 Bq / Kg a 362 ± 10,65 Bq / Kg respectivamente. Las actividades de radio equivalente se encontraron por debajo de 370 Bq / Kg en todas las muestras recolectadas. Las tasas de dosis de gamma externas estimadas a partir de los niveles de radionucleidos en los sedimentos tenían un rango de 32 ± 3,4 nGy / ha 68 ± 5,83 nGy / h. Por lo tanto, la extracción de oro en Rosterman tiene implicaciones mínimas para la salud de la población en general y los mineros.
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