Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research
The Chaco-Pampean plain, Argentina, is a vast geographical unit (1,000,000km 2) affected by high arsenic (As) concentrations in universal oxidizing groundwater. The socio-economic development of the region is restricted by water availability and its low quality caused by high salinity and hardness....
Guardado en:
| Publicado: |
2012
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v429_n_p36_Nicolli http://hdl.handle.net/20.500.12110/paper_00489697_v429_n_p36_Nicolli |
| Aporte de: |
| id |
paper:paper_00489697_v429_n_p36_Nicolli |
|---|---|
| record_format |
dspace |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Arsenic Chaco-Pampean aquifers Endemic hydroarsenicism and fluorosis Fluoride Hydrogeochemistry Trace-element sources and mobility Argentina Arid climates Desorption process Endemic hydroarsenicism and fluorosis Evaporative concentration Fluoride Geogenic Geographical units Guideline values High pH High salinity Human consumption Hydraulic parameters Hydrogeochemistry Key process Low qualities Oxyanions Paleoclimates Potential risks Residence time River basins Rural population Shallow aquifers Shallow groundwater Socio-economic development Volcanic ash Volcanic glass Water availability Antimony Aquifers Arsenic Climate control Climatology Crystallography Desorption Groundwater pollution Groundwater resources Hydrogeology Leaching Lithology Manganese Mineralogy Minerals Sedimentology Sediments Silicates Sodium Volcanoes Trace elements aluminum antimony arsenic boron fluoride ground water iron manganese molybdenum selenium trace element uranium vanadium aquifer arsenic concentration (composition) dissolution groundwater hardness health risk hydrolysis leaching mobilization pH residence time salinity silicate mineral trace element water availability water quality Argentina article chemical analysis environmental exposure environmental impact environmental management environmental monitoring environmental temperature erosion geographic distribution geology geomorphology hardness hydrolysis landscape leaching medical research mineralogy priority journal river basin salinity sedimentation socioeconomics water analysis water contamination water supply Argentina Arsenic Groundwater Trace Elements Water Pollutants, Chemical Argentina Chaco [Argentina] La Pampa |
| spellingShingle |
Arsenic Chaco-Pampean aquifers Endemic hydroarsenicism and fluorosis Fluoride Hydrogeochemistry Trace-element sources and mobility Argentina Arid climates Desorption process Endemic hydroarsenicism and fluorosis Evaporative concentration Fluoride Geogenic Geographical units Guideline values High pH High salinity Human consumption Hydraulic parameters Hydrogeochemistry Key process Low qualities Oxyanions Paleoclimates Potential risks Residence time River basins Rural population Shallow aquifers Shallow groundwater Socio-economic development Volcanic ash Volcanic glass Water availability Antimony Aquifers Arsenic Climate control Climatology Crystallography Desorption Groundwater pollution Groundwater resources Hydrogeology Leaching Lithology Manganese Mineralogy Minerals Sedimentology Sediments Silicates Sodium Volcanoes Trace elements aluminum antimony arsenic boron fluoride ground water iron manganese molybdenum selenium trace element uranium vanadium aquifer arsenic concentration (composition) dissolution groundwater hardness health risk hydrolysis leaching mobilization pH residence time salinity silicate mineral trace element water availability water quality Argentina article chemical analysis environmental exposure environmental impact environmental management environmental monitoring environmental temperature erosion geographic distribution geology geomorphology hardness hydrolysis landscape leaching medical research mineralogy priority journal river basin salinity sedimentation socioeconomics water analysis water contamination water supply Argentina Arsenic Groundwater Trace Elements Water Pollutants, Chemical Argentina Chaco [Argentina] La Pampa Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| topic_facet |
Arsenic Chaco-Pampean aquifers Endemic hydroarsenicism and fluorosis Fluoride Hydrogeochemistry Trace-element sources and mobility Argentina Arid climates Desorption process Endemic hydroarsenicism and fluorosis Evaporative concentration Fluoride Geogenic Geographical units Guideline values High pH High salinity Human consumption Hydraulic parameters Hydrogeochemistry Key process Low qualities Oxyanions Paleoclimates Potential risks Residence time River basins Rural population Shallow aquifers Shallow groundwater Socio-economic development Volcanic ash Volcanic glass Water availability Antimony Aquifers Arsenic Climate control Climatology Crystallography Desorption Groundwater pollution Groundwater resources Hydrogeology Leaching Lithology Manganese Mineralogy Minerals Sedimentology Sediments Silicates Sodium Volcanoes Trace elements aluminum antimony arsenic boron fluoride ground water iron manganese molybdenum selenium trace element uranium vanadium aquifer arsenic concentration (composition) dissolution groundwater hardness health risk hydrolysis leaching mobilization pH residence time salinity silicate mineral trace element water availability water quality Argentina article chemical analysis environmental exposure environmental impact environmental management environmental monitoring environmental temperature erosion geographic distribution geology geomorphology hardness hydrolysis landscape leaching medical research mineralogy priority journal river basin salinity sedimentation socioeconomics water analysis water contamination water supply Argentina Arsenic Groundwater Trace Elements Water Pollutants, Chemical Argentina Chaco [Argentina] La Pampa |
| description |
The Chaco-Pampean plain, Argentina, is a vast geographical unit (1,000,000km 2) affected by high arsenic (As) concentrations in universal oxidizing groundwater. The socio-economic development of the region is restricted by water availability and its low quality caused by high salinity and hardness. In addition, high As and associated trace-elements (F, U, V, B, Se, Sb, Mo) concentrations of geogenic origin turn waters unsuitable for human consumption. Shallow groundwater with high As and F concentrations (ranges: <10-5300μg As/L; 51-7,340μgF/L) exceeding the WHO guideline values (As: 10μg/L; F: 1,500μg/L) introduces a potential risk of hydroarsenicism disease in the entire region and fluorosis in some areas. The rural population is affected (2-8 million inhabitants). Calcareous loess-type sediments and/or intercalated volcanic ash layers in pedosedimentary sequences hosting the aquifers are the sources of contaminant trace-elements. Large intra and interbasin variabilities of trace-element concentrations, especially between shallow and deep aquifers have been observed. All areas of the Chaco-Pampean plain were affected in different grades: the Chaco-Salteña plain (in the NNE of the region) and the northern La Pampa plain (in the center-south) have been shown the highest concentrations. The ranges of As and F contents in loess-sediments are 6-25 and 534-3340mg/kg, respectively in the Salí River basin. Three key processes render high As concentrations in shallow aquifers: i) volcanic glass dissolution and/or hydrolysis and leaching of silicates minerals hosted in loess; ii) desorption processes from the surface of Al-, Fe- and Mn-oxi-hydroxides (coating lithic fragments) at high pH and mobilization as complex oxyanions (As and trace elements)in Na-bicarbonate type groundwaters; and iii) evaporative concentration in areas with semiarid and arid climates. Local factors play also an important role in the control of high As concentrations, highly influenced by lithology-mineralogy, soils-geomorphology, actual climate and paleoclimates, hydraulic parameters, and residence time of groundwaters. © 2012. |
| title |
Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| title_short |
Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| title_full |
Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| title_fullStr |
Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| title_full_unstemmed |
Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research |
| title_sort |
arsenic and associated trace-elements in groundwater from the chaco-pampean plain, argentina: results from 100years of research |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v429_n_p36_Nicolli http://hdl.handle.net/20.500.12110/paper_00489697_v429_n_p36_Nicolli |
| _version_ |
1768543695973384192 |
| spelling |
paper:paper_00489697_v429_n_p36_Nicolli2023-06-08T15:05:42Z Arsenic and associated trace-elements in groundwater from the Chaco-Pampean plain, Argentina: Results from 100years of research Arsenic Chaco-Pampean aquifers Endemic hydroarsenicism and fluorosis Fluoride Hydrogeochemistry Trace-element sources and mobility Argentina Arid climates Desorption process Endemic hydroarsenicism and fluorosis Evaporative concentration Fluoride Geogenic Geographical units Guideline values High pH High salinity Human consumption Hydraulic parameters Hydrogeochemistry Key process Low qualities Oxyanions Paleoclimates Potential risks Residence time River basins Rural population Shallow aquifers Shallow groundwater Socio-economic development Volcanic ash Volcanic glass Water availability Antimony Aquifers Arsenic Climate control Climatology Crystallography Desorption Groundwater pollution Groundwater resources Hydrogeology Leaching Lithology Manganese Mineralogy Minerals Sedimentology Sediments Silicates Sodium Volcanoes Trace elements aluminum antimony arsenic boron fluoride ground water iron manganese molybdenum selenium trace element uranium vanadium aquifer arsenic concentration (composition) dissolution groundwater hardness health risk hydrolysis leaching mobilization pH residence time salinity silicate mineral trace element water availability water quality Argentina article chemical analysis environmental exposure environmental impact environmental management environmental monitoring environmental temperature erosion geographic distribution geology geomorphology hardness hydrolysis landscape leaching medical research mineralogy priority journal river basin salinity sedimentation socioeconomics water analysis water contamination water supply Argentina Arsenic Groundwater Trace Elements Water Pollutants, Chemical Argentina Chaco [Argentina] La Pampa The Chaco-Pampean plain, Argentina, is a vast geographical unit (1,000,000km 2) affected by high arsenic (As) concentrations in universal oxidizing groundwater. The socio-economic development of the region is restricted by water availability and its low quality caused by high salinity and hardness. In addition, high As and associated trace-elements (F, U, V, B, Se, Sb, Mo) concentrations of geogenic origin turn waters unsuitable for human consumption. Shallow groundwater with high As and F concentrations (ranges: <10-5300μg As/L; 51-7,340μgF/L) exceeding the WHO guideline values (As: 10μg/L; F: 1,500μg/L) introduces a potential risk of hydroarsenicism disease in the entire region and fluorosis in some areas. The rural population is affected (2-8 million inhabitants). Calcareous loess-type sediments and/or intercalated volcanic ash layers in pedosedimentary sequences hosting the aquifers are the sources of contaminant trace-elements. Large intra and interbasin variabilities of trace-element concentrations, especially between shallow and deep aquifers have been observed. All areas of the Chaco-Pampean plain were affected in different grades: the Chaco-Salteña plain (in the NNE of the region) and the northern La Pampa plain (in the center-south) have been shown the highest concentrations. The ranges of As and F contents in loess-sediments are 6-25 and 534-3340mg/kg, respectively in the Salí River basin. Three key processes render high As concentrations in shallow aquifers: i) volcanic glass dissolution and/or hydrolysis and leaching of silicates minerals hosted in loess; ii) desorption processes from the surface of Al-, Fe- and Mn-oxi-hydroxides (coating lithic fragments) at high pH and mobilization as complex oxyanions (As and trace elements)in Na-bicarbonate type groundwaters; and iii) evaporative concentration in areas with semiarid and arid climates. Local factors play also an important role in the control of high As concentrations, highly influenced by lithology-mineralogy, soils-geomorphology, actual climate and paleoclimates, hydraulic parameters, and residence time of groundwaters. © 2012. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00489697_v429_n_p36_Nicolli http://hdl.handle.net/20.500.12110/paper_00489697_v429_n_p36_Nicolli |