RESUMEN

Uranium concentrations in North American rivers are higher than those reported 20 years ago. The increase is attributed to applications to agricultural land of larger amounts of phosphate fertilizer containing appreciable concentrations of uranium. Experiments showing a constant phosphorous-uranium ratio for various types of fertilizers and for the easily solubilized fraction of 0-46-0 fertilizers support this view.

Asunto(s)

Uranio/análisis , Contaminación del Agua/análisis , Fertilizantes/análisis , América del Norte , Fosfatos/análisis , Estaciones del Año , Contaminación Química del Agua/análisis , Tiempo (Meteorología)