Spatial and temporal hydrochemical changes in groundwater under the contaminating effects of fertilizers and wastewater

Vidal, M.; Melgar, Juan Carlos; López, Alba Nogueira; Santoalla, M.C

doi:10.1006/jema.2000.0379

Cited by 43 publications

(26 citation statements)

References 22 publications

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“…While at the riparian wells average NO 3 -concentration was 1.7 mg L -1 , at the left and right margins these values increased to 3.8 and 5.1 mg L -1 , respectively. A similar trend was observed for chloride, with average concentra- [32][33][34] For the two last studies, both authors agree that highest electrical conductivity was associated with locations where agricultural activities predominate.…”

Section: Resultssupporting

confidence: 64%

Groundwater quality comparison between rural farms and riparian wells in the western Amazon, Brazil

et al. 2011

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Recebido em 28/10/09; aceito em 30/7/10; publicado na web em 17/11/10Groundwater quality of a riparian forest is compared to wells in surrounding rural areas at Urupá River basin. Groundwater types were calcium bicarbonated at left margin and sodium chloride at right, whereas riparian wells exhibited a combination of both (sodium bicarbonate). Groundwater was mostly solute-depleted with concentrations within permissible limits for human consumption, except for nitrate. Isotopic composition suggests that inorganic carbon in Urupá River is mostly supplied by runoff instead of riparian groundwater. Hence, large pasture areas in addition to narrow riparian forest width in this watershed may have an important contribution in the chemical composition of this river.

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Section: Resultssupporting

confidence: 64%

Groundwater quality comparison between rural farms and riparian wells in the western Amazon, Brazil

et al. 2011

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“…Fisher and Mullican (1997) Vidal et al (2000) showed that the composition of the groundwater around Lugo City in Spain is influenced by agricultural activities. Dindane et al (2003) combined major ions and stable isotopes to identify the chemical characteristics and the origins of the groundwater in a shallow aquifer in Morocco.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Quality, Geochemical Processes and Groundwater Evolution in the Chateauguay River Watershed, Quebec, Canada

Blanchette¹,

Lefebvre²,

Nastev³

et al. 2010

Canadian Water Resources Journal

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A hydrogeochemical study was carried out in the Quebec portion of the Chateauguay River watershed. The objective was to characterize the chemical composition of groundwater in order to evaluate its quality and assess geochemical variations related to the geological and hydrogeological settings. Bulk groundwater samples were collected from 144 wells distributed evenly over the study area. Nine of the wells were sampled with a multi-level packer system, for a total of 22 multi-level samples. Groundwater shows a wide range of compositions as indicated by 12 water types defined on the basis of major ions with a weak variation of chemical composition with depth. The predominant water type, Ca-HCO 3 , occurs in most geological and hydrogeological settings. Principal Component Analysis (PCA) and geochemical graphs were used to identify the major processes that exert a control over the chemical composition of the groundwater. Approximately 80% of the geochemical variation can be explained by mixing between fresh recharge water with more saline water associated with the former Champlain Sea, which invaded the aquifer. Secondary processes are related to ion exchange and the potential dissolution of minerals. A cross-section along a major flow path shows that the geochemical evolution of groundwater leads to relations between water type groups, geochemical processes, and groundwater flow conditions. The hydrogeochemical conceptual model infers that carbonate dissolution during recharge leads to one end-member, a Ca-HCO 3 type water, which further evolves along its flow path due through ion exchange and mixing with remnant Champlain Sea water (Na-Cl), the other endmember. 504Canadian Water Resources Journal/Revue canadienne des ressources hydriques

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“…Use of fertilizers and septic tanks, animal farming, atmospheric deposition, industrial and municipal discharges are the prime sources of nitrate in groundwater (Vidal et al 2000;Liu et al 2005;Reddy et al 2011;Kumar and James 2013;Vystavna et al 2015). Presence of high level of nitrate in drinking water causes methemoglobinemia (infant cyanosis or blue baby syndrome).…”

Section: Resultsmentioning

confidence: 99%

Spatio-temporal variations in hydro-geochemistry of groundwater at rural, urban and industrial areas of Kanpur, India

Kumar

et al. 2018

Environmental Sustainability

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Physicochemical characteristics of groundwater provide vital information regarding prevailing geochemical, geomorphological and predominant pollution conditions in an area. In the present work, hydro-geochemical properties of ground water were examined at rural, urban and industrial areas of Kanpur to determine its aptness for drinking and irrigation. Groundwater samples were randomly collected from deep borewell pumps across the city. The samples were examined for pH, electrical conductivity (EC), nitrate, sulphate, chloride, hardness, alkalinity, total dissolved solids, sodium, potassium, calcium, which ranged between 7.10 and 8. −1 in post-monsoon season respectively. Water Quality Index of groundwater during post-monsoon were recorded to be better than the pre-monsoon season, reason being percolation of water during rainfall in monsoon. The pre and post-monsoon data provided valuable information regarding the suitability of groundwater for various purposes such as drinking and irrigation. Results showed 'fairly' and 'good' categories of water quality in the pre-monsoon season which further improved in post monsoon season. Results clearly specify that the natural process of groundwater recharge is an important mechanism to maintain the quality of groundwater.

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Spatial and temporal hydrochemical changes in groundwater under the contaminating effects of fertilizers and wastewater

Cited by 43 publications

References 22 publications

Groundwater quality comparison between rural farms and riparian wells in the western Amazon, Brazil

Groundwater quality comparison between rural farms and riparian wells in the western Amazon, Brazil

Groundwater Quality, Geochemical Processes and Groundwater Evolution in the Chateauguay River Watershed, Quebec, Canada

Spatio-temporal variations in hydro-geochemistry of groundwater at rural, urban and industrial areas of Kanpur, India

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