Monitorization of uranium and thorium concentration and isotope ratios in groundwater from a semiarid basin in Central Spain by single and multicollector sector field ICP-MS - Jiménez Barredo, Fernando; Basdediós Prieto, Nuria; Martínez-Pillado, Virginia; Vega, Marisol; Jiménez Sevilla, Juan José; Pardo Almudí, Rafael; Giménez Forcada, Elena (2016)