| dc.creator | MARIA TERESA ALARCON HERRERA | |
| dc.date | 2012 | |
| dc.date.accessioned | 2022-10-12T19:42:51Z | |
| dc.date.available | 2022-10-12T19:42:51Z | |
| dc.identifier | http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1706 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4120299 | |
| dc.description | 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 | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/about/cc0/ | |
| dc.subject | info:eu-repo/classification/Groundwater/As and F | |
| dc.subject | info:eu-repo/classification/Co-ocurrence As(F/temporal variation | |
| dc.subject | info:eu-repo/classification/cti/2 | |
| dc.subject | info:eu-repo/classification/cti/23 | |
| dc.subject | info:eu-repo/classification/cti/2307 | |
| dc.subject | info:eu-repo/classification/cti/221099 | |
| dc.title | Temporal variation and Co-occurrence of fluoride and arsenic in aquifers of the central semi-arid region of Chihuahua, Mexico | |
| dc.type | info:eu-repo/semantics/conferenceProceedings | |
| dc.type | info:eu-repo/semantics/submittedVersion | |
