Por favor, use este identificador para citar o enlazar este ítem:
http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1706| Temporal variation and Co-occurrence of fluoride and arsenic in aquifers of the central semi-arid region of Chihuahua, Mexico | |
| MARIA TERESA ALARCON HERRERA | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| As and F temporal variation | |
| The objectives of this study were, to evaluate the change in concentrations of arsenic (As) and fluoride (F) in three aquifers located in the central semi-arid region of Chihuahua, at three different times within a seven year period. The As content in rock, sediment, and groundwater samples was first determined in 2004; later on, in 2007 and 2010, the content of As and F in groundwater were measured. In all three sampling episodes some wells had consistently As concentrations above 0.025 mg L-1. The F concentration surpassed the Mexican limit values of 1.5 mg L-1 in 77% of the measured wells. The surrounding rocks contained enough As and F to support a geogenic origin of these contaminants and their higher concentrations within the rhyolites indicates a possible chemical association to these volcanic rocks. A correlation between As and F suggests a co-occurrence of these two contaminants (r2 | |
| 2012 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
Cargar archivos:
| Fichero | Tamaño | Formato | |
|---|---|---|---|
| Australia-Articulo-Proceedings.pdf | 728.3 kB | Adobe PDF | Visualizar/Abrir |