naa a22 4500 51075239X CHVBK 20180411083109.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11270-013-1433-4 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1433-4 Fluoride and Arsenic in an Alluvial Aquifer System in Chihuahua, Mexico: Contaminant Levels, Potential Sources, and Co-occurrence [Elektronische Daten] [Víctor Reyes-Gómez, María Alarcón-Herrera, Mélida Gutiérrez, Daniel López] The objectives of this study were to identify potential sources of As and F within an alluvial aquifer system in central Chihuahua, to evaluate their change in concentrations with time, and to determine their degree of co-occurrence. 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 was measured. From 34 wells sampled, seven had As levels above the Mexican maximum contaminant level of 0.025mg L−1, and 13 wells surpassed the F value of 1.5mg L−1, all of these near the town of Aldama. The surrounding rocks contained enough As and F to support a geogenic origin of these contaminants, especially evident in rhyolites. A correlation between As and F suggests a co-occurrence of these two contaminants (r = 0.720; p < 0.001). The minor variations of As and F in the measured events indicate a stable evolution for As and F. Yearly monitoring the content of As and F is recommended, in order to observe the behavior of these elements within the aquifer, especially as land use is changing and the demand for groundwater (drinking water, irrigation) is increasing. Springer Science+Business Media Dordrecht, 2013 Arsenic nationallicence Fluoride nationallicence Alluvial aquifer nationallicence Conceptual model nationallicence Chihuahua nationallicence Mexico nationallicence Reyes-Gómez Víctor Instituto de Ecología, A.C. Red Ambiente y Sustentabilidad, Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut Alarcón-Herrera María Renewable Energy and Environmental Protection, Centro de Investigacion En Materiales Avanzados (CIMAV), Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut Gutiérrez Mélida Missouri State University (MSU), 65897, Springfield, MO, USA aut López Daniel Instituto de Ecología, A.C. Red Ambiente y Sustentabilidad, Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-15 0049-6979 224:2<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1433-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1433-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reyes-Gómez Víctor Instituto de Ecología, A.C. Red Ambiente y Sustentabilidad, Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut NATIONALLICENCE 700 1- Alarcón-Herrera María Renewable Energy and Environmental Protection, Centro de Investigacion En Materiales Avanzados (CIMAV), Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut NATIONALLICENCE 700 1- Gutiérrez Mélida Missouri State University (MSU), 65897, Springfield, MO, USA aut NATIONALLICENCE 700 1- López Daniel Instituto de Ecología, A.C. Red Ambiente y Sustentabilidad, Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109, Chihuahua, Chihuahua, México aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-15 0049-6979 224:2<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer