Geochemical processes regulating F − , as and NO 3 − content in the groundwater of a sector of the Pampean Region, Argentina

Borzi, Guido Esteban; García, Leandro; Carol, Eleonora Silvina

doi:10.1016/j.scitotenv.2015.05.072

Cited by 23 publications

(6 citation statements)

References 53 publications

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“…Se han encontrado evidencias de que, en la llanura chaco-pampeana, ambos elementos son geogénicos (Osicka et al 2002;Navoni et al 2012;Auge et al 2013;Espósito et al 2013; entre otros). La presencia de calcita en el acuífero produciría valores de pH ligeramente alcalinos (Galindo et al 2007), favoreciendo la disolución de la sílice contenida en el vidrio volcánico del loess, esto permitiría la incorporación de flúor y arsénico al agua subterránea (Borzi et al 2015;Carol et al 2015). Nicolli et al (2010Nicolli et al ( , 2012 proponen que la presencia de ambos iones sería causado por procesos de hidrólisis y lixiviado del vidrio volcánico presente en el loess, en tanto Pérez Gattorna (1996) postula que los fluoruros se producirían por la meteorización de las arcillas (bentonita) y/o micas.…”

Section: Interpretación De Resultados Y Discusiónunclassified

Distribución espacial de propiedades químicas del agua subterránea en la ciudad de Pergamino, provincia de Buenos Aires, Argentina

Murphy

Alperín

Quiroz³

2019

RMLP

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El objetivo general del trabajo es caracterizar la distribución espacial de las concentraciones de nitratos, sulfatos, fluoruros y arsénico total en las aguas del acuífero Pampeano de la ciudad de Pergamino, el único medio de aprovisionamiento de agua de la ciudad. Los datos fueron obtenidos por Obras Sanitarias de Pergamino y corresponden al promedio de las concentraciones de los iones en el agua de 53 pozos muestreados bimestralmente en el periodo 2006-2014. Se utilizaron métodos geoestadísticos para analizar el análisis. La distribución espacial de las concentraciones de sulfato, si bien no supera en ningún pozo los valores recomendados por la normativa provincial, son menores en el noroeste, fuera del área urbana (40 mg/l) y gradualmente aumentan y alcanzan los valores mayores en el centro y en el suroeste de la ciudad, próximos al Arroyo Pergamino (120 mg/l). Dos hipótesis no excluyentes explicarían este fenómeno: mezcla de aguas por ascenso vertical desde el acuífero Puelche y/o infiltración de aguas del arroyo a través de pozos con encamisado deficiente. La distribución de nitratos muestra en el centro de la ciudad las concentraciones más altas, con 18 pozos que exceden los límites admisibles (más de 100 mg/l), los tenores disminuyen gradualmente hacia la periferia; los altos valores en la ciudad podrían atribuirse a filtraciones de las cañerías de las cloacas cuya antigüedad es de casi 100 años. Existen 27 pozos que sobrepasan los límites permitidos con fluoruros, estos se ubican en el suroeste y en el norte (máximos 1,6 mg/l y 1,3 mg/l respectivamente), hacia el centro de la ciudad tenores disminuyen hasta alcanzar los límites permitidos. Cinco pozos tienen concentraciones de arsénico total mayor a lo normado, se encuentran en el sector suroeste y en el noreste de la ciudad (0,055 mg/l). El patrón espacial de fluoruros y arsénico podría vincularse con la presencia de vidrio volcánico presente en sedimentos y con la forma del acuífero que presenta lentes.

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Section: Interpretación De Resultados Y Discusiónunclassified

Distribución espacial de propiedades químicas del agua subterránea en la ciudad de Pergamino, provincia de Buenos Aires, Argentina

Murphy

Alperín

Quiroz³

2019

RMLP

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“…The substrate of the area comprises a Pleistocene deposit of thick homogeneous loess of approximately 50 m consisting of volcanic shards and minerals such as quartz, plagioclase, potassium feldspar, and scarce hornblende (Teruggi, 1957). Also, it has minerals from the clay group such as illite and interstratified illite-smectite of silty clay texture, with intercalations of limestone layers, that hosts the unconfined aquifer in it (Borzi, García, & Carol, 2015;Z arate, 2003).…”

Section: Study Areamentioning

confidence: 99%

Assessment of anthropogenic pollution using multiple hydrogeochemical tools and statistical analysis in rural plain basins of the Argentinian Pampean Plain

Borzi

Idaszkin

Tanjal

et al. 2021

River Research & Apps

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Chemistry of surface water and groundwater can be conditioned by geology, anthropic influence, and exchange of flow between them. The Pampean Plain located in Argentina has gaining streams and mainly rural activities. An increase in the concentration of chemical values of surface waters with respect to groundwater can be attributed to the anthropogenic contribution. The aim of this work was to identify the natural and/or anthropic processes that determine the chemistry of surface water and groundwater in a sector of the Pampean Plain of Argentina through the analysis of major and trace elements, 18 O and 2 H isotopes, and statistical tools. A surface water and groundwater sampling network was designed, where physicochemical parameters were measured, and samples were taken to determine major and trace elements and stable isotopes of water. The results indicate that dissolution, cation exchange, and evaporation are the main processes that determine the chemistry of the major elements associated with natural processes without showing evidence of anthropic involvement. Some trace elements that are statistically associated with major ions evidence water-sediment interaction within the aquifer. On the other hand, trace elements, as heavy metals, present a higher concentration in surface water compared to groundwater. This fact, evidences an anthropogenic contribution attributable to anthropic activities. The multivariate statistical analysis allowed discriminating between those trace elements associated with natural processes from those influenced by anthropic activity, even when these elements' concentration was very low. K E Y W O R D Sgaining streams, geochemical processes, multivariate statistical analysis, Samboromb on River basin, trace pollutants | INTRODUCTIONThe chemistry of surface water and groundwater can be controlled by many factors, including atmospheric chemistry, geology, vegetation (or organic matter decay), and also anthropic factors (Jiang, Wu,

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“…The two principal sources of Fin groundwater are anthropogenic (Borzi et al, 2015;Mamatchi et al, 2019;Su et al, 2021;Yadav et al, 2021;Zango et al, 2021;Huang et al, 2022) and geogenic in origin (Currell et al, 2011;He X et al, 2013;Xiao et al, 2015;Dehbandi et al, 2018;Hao et al, 2021b;Duggal and Sharma, 2022). Previous studies have found that geogenic processes are frequently responsible for elevated Fconcentrations in groundwater (Dehbandi et al, 2018;Emenike et al, 2018;Rashid et al, 2018;Hao et al, 2021c;Duggal and Sharma, 2022;Huang et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Seasonal distribution of deep groundwater fluoride, geochemical factors and ecological risk for irrigation in the Shendong mining area, China

Hao

Wang

et al. 2022

Front. Environ. Sci.

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High-fluoride (F-) deep groundwater in the vicinity of mining areas poses severe ecological risks. In this study, we aimed to characterize and reveal the seasonal distribution and influencing factors of elevated F- concentrations in the deep groundwater in the Shendong mining area, Shaanxi and Inner Mongolia province, China. In addition, the ecological risks associated with F- concentrations in irrigation water were assessed. During the wet and dry seasons, the F- concentrations in mine water samples ranged between 0.12 and 13.92 mg/L (mean: 4.24 mg/L) and between 0.20 and 17.58 mg/L (mean: 4.59 mg/L), respectively. The F- content of mine water was clearly higher during the dry season than that during the wet season. F- concentrations in deep groundwater exhibited consistent spatial distributions during both the dry and wet seasons, with an evident increase from southeast to northwest. The dissolution and precipitation of F--bearing and calcium minerals, cation exchange, competitive adsorption, evaporation, and anthropogenic activities during both the wet and dry seasons were identified as important factors influencing F- concentrations in deep groundwater. In addition, the ecological assessment revealed that 100% and 88.89% of low-F- deep groundwater samples were suitable for practices during the dry and wet seasons, respectively. In contrast 84.00% and 84.62% of high-F- deep groundwater samples were unsuitable for irrigation practices during the dry and wet seasons, respectively. This research provided useful prevention policies of deep groundwater extraction to mitigate environment problems associated with excessive F- irrigation.

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Geochemical processes regulating F − , as and NO 3 − content in the groundwater of a sector of the Pampean Region, Argentina

Cited by 23 publications

References 53 publications

Distribución espacial de propiedades químicas del agua subterránea en la ciudad de Pergamino, provincia de Buenos Aires, Argentina

Distribución espacial de propiedades químicas del agua subterránea en la ciudad de Pergamino, provincia de Buenos Aires, Argentina

Assessment of anthropogenic pollution using multiple hydrogeochemical tools and statistical analysis in rural plain basins of the Argentinian Pampean Plain

Seasonal distribution of deep groundwater fluoride, geochemical factors and ecological risk for irrigation in the Shendong mining area, China

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