Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico

Mine wastes from the La Aurora mine in the state of Guanajuato were generated by the flotation process and placed in four tailing dumps on the local stream while the plant operated. Given that these wastes contain toxic elements, it is important to establish their impact on the quality of several su...

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Autores principales:	Victor Manuel Escot-Espinoza, Yann Rene Ramos-Arroyo, Isabel Lázaro, Isidro Montes-Avila, Leticia Carrizalez-Yañez, Roberto Briones-Gallardo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	mine wastes secondary mineral phases arsenic dissolution mechanism spring water quality Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/230a71fc2a614b7faa53be848fd0b102
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spelling	oai:doaj.org-article:230a71fc2a614b7faa53be848fd0b1022021-11-25T19:08:18ZPresence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico10.3390/toxics91103072305-6304https://doaj.org/article/230a71fc2a614b7faa53be848fd0b1022021-11-01T00:00:00Zhttps://www.mdpi.com/2305-6304/9/11/307https://doaj.org/toc/2305-6304Mine wastes from the La Aurora mine in the state of Guanajuato were generated by the flotation process and placed in four tailing dumps on the local stream while the plant operated. Given that these wastes contain toxic elements, it is important to establish their impact on the quality of several surrounding natural sources of water that are considered potential drinking water supplies. This study identified four water source types, in which the contents of arsenic (As), mercury (Hg), and thallium (Tl) were exceeded, according to international guideline values for drinking water quality. The first type of aqueous sample corresponded to leachates produced by rainwater infiltration in tailings and water–mineral waste interactions. The second type corresponded to surface water along the Xichú and La Laja Streams, and the third and fourth types involved two groundwater well samples and spring samples, respectively. The Chiquito Stream was used as a reference area that had not been impacted by the mine wastes. The isotopic signatures associated with δ<sup>34</sup>S<sub>sulfate</sub> and δ<sup>18</sup>O<sub>sulfate</sub> compositions from the El Ojo de Agua spring are similar to those of the Santa María River and are different from those of the mine waste leachates. This study shows evidence of the presence of As in the El Ojo de Agua spring, which results from dissolution of secondary mineral phases that were produced by alteration of the mine wastes, which then migrated along the Xichú Stream system until reaching the spring. These As-bearing fine particles are prone to dissolution when in contact with this water source. Principal component analysis revealed that the observed As, Tl, and Hg can be attributed to weathering of the mine wastes. However, the results suggest that a natural contribution of these elements could be associated with rainwater–igneous rock interactions.Victor Manuel Escot-EspinozaYann Rene Ramos-ArroyoIsabel LázaroIsidro Montes-AvilaLeticia Carrizalez-YañezRoberto Briones-GallardoMDPI AGarticlemine wastessecondary mineral phasesarsenicdissolution mechanismspring water qualityChemical technologyTP1-1185ENToxics, Vol 9, Iss 307, p 307 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mine wastes secondary mineral phases arsenic dissolution mechanism spring water quality Chemical technology TP1-1185
spellingShingle	mine wastes secondary mineral phases arsenic dissolution mechanism spring water quality Chemical technology TP1-1185 Victor Manuel Escot-Espinoza Yann Rene Ramos-Arroyo Isabel Lázaro Isidro Montes-Avila Leticia Carrizalez-Yañez Roberto Briones-Gallardo Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
description	Mine wastes from the La Aurora mine in the state of Guanajuato were generated by the flotation process and placed in four tailing dumps on the local stream while the plant operated. Given that these wastes contain toxic elements, it is important to establish their impact on the quality of several surrounding natural sources of water that are considered potential drinking water supplies. This study identified four water source types, in which the contents of arsenic (As), mercury (Hg), and thallium (Tl) were exceeded, according to international guideline values for drinking water quality. The first type of aqueous sample corresponded to leachates produced by rainwater infiltration in tailings and water–mineral waste interactions. The second type corresponded to surface water along the Xichú and La Laja Streams, and the third and fourth types involved two groundwater well samples and spring samples, respectively. The Chiquito Stream was used as a reference area that had not been impacted by the mine wastes. The isotopic signatures associated with δ<sup>34</sup>S<sub>sulfate</sub> and δ<sup>18</sup>O<sub>sulfate</sub> compositions from the El Ojo de Agua spring are similar to those of the Santa María River and are different from those of the mine waste leachates. This study shows evidence of the presence of As in the El Ojo de Agua spring, which results from dissolution of secondary mineral phases that were produced by alteration of the mine wastes, which then migrated along the Xichú Stream system until reaching the spring. These As-bearing fine particles are prone to dissolution when in contact with this water source. Principal component analysis revealed that the observed As, Tl, and Hg can be attributed to weathering of the mine wastes. However, the results suggest that a natural contribution of these elements could be associated with rainwater–igneous rock interactions.
format	article
author	Victor Manuel Escot-Espinoza Yann Rene Ramos-Arroyo Isabel Lázaro Isidro Montes-Avila Leticia Carrizalez-Yañez Roberto Briones-Gallardo
author_facet	Victor Manuel Escot-Espinoza Yann Rene Ramos-Arroyo Isabel Lázaro Isidro Montes-Avila Leticia Carrizalez-Yañez Roberto Briones-Gallardo
author_sort	Victor Manuel Escot-Espinoza
title	Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
title_short	Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
title_full	Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
title_fullStr	Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
title_full_unstemmed	Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico
title_sort	presence of arsenic in potential sources of drinking water supply located in a mineralized and mined area of the sierra madre oriental in mexico
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/230a71fc2a614b7faa53be848fd0b102
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Presence of Arsenic in Potential Sources of Drinking Water Supply Located in a Mineralized and Mined Area of the Sierra Madre Oriental in Mexico

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