Plate tectonics influence on geogenic arsenic cycling: From primary sources to global groundwater enrichment

Mukherjee, Abhijit; Gupta, Saibal; Coomar, Poulomee; Fryar, Alan E.; Guillot, Stéphane; Verma, Swati; Bhattacharya, Prosun; Bundschuh, Jochen; Charlet, Laurent

doi:10.1016/j.scitotenv.2019.04.255

Cited by 68 publications

(26 citation statements)

References 92 publications

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“…The widely accepted mechanism of arsenic release into groundwaters in alluvial aquifers is the microbially mediated dissimilatory reductive dissolution of arsenic-bearing Fe oxides (Fe oxyhydroxides, hydroxides, and oxides) (Islam et al 2004 ; Berg et al 2007 ). The abundance of relatively young reactive organic matter in sedimentary deposits is plausibly causally linked to the occurrence of high arsenic concentrations in groundwaters (Rowland et al 2007 , 2011 ; Mukherjee et al 2019 ). Hence, increased fluvisols, soil and sedimentary deposit thickness promote arsenic accumulation in groundwaters.…”

Section: Resultsmentioning

confidence: 99%

Geostatistical model of the spatial distribution of arsenic in groundwaters in Gujarat State, India

Podgorski

Berg

et al. 2020

Environ Geochem Health

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Geogenic arsenic contamination in groundwaters poses a severe health risk to hundreds of millions of people globally. Notwithstanding the particular risks to exposed populations in the Indian sub-continent, at the time of writing, there was a paucity of geostatistically based models of the spatial distribution of groundwater hazard in India. In this study, we used logistic regression models of secondary groundwater arsenic data with research-informed secondary soil, climate and topographic variables as principal predictors generate hazard and risk maps of groundwater arsenic at a resolution of 1 km across Gujarat State. By combining models based on different arsenic concentrations, we have generated a pseudo-contour map of groundwater arsenic concentrations, which indicates greater arsenic hazard ([ 10 lg/L) in the northwest, northeast and southeast parts of Kachchh District as well as northwest and southwest Banas Kantha District. The total number of people living in areas in Gujarat with groundwater arsenic concentration exceeding 10 lg/L is estimated to be around 122,000, of which we estimate approximately 49,000 people consume groundwater exceeding 10 lg/L. Using simple previously published doseresponse relationships, this is estimated to have given rise to 700 (prevalence) cases of skin cancer and around 10 cases of premature avoidable mortality/ annum from internal (lung, liver, bladder) cancersthat latter value is on the order of just 0.001% of internal cancers in Gujarat, reflecting the relative low groundwater arsenic hazard in Gujarat State.

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Section: Resultsmentioning

confidence: 99%

Geostatistical model of the spatial distribution of arsenic in groundwaters in Gujarat State, India

Podgorski

Berg

et al. 2020

Environ Geochem Health

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“…Arsenic found in sedimentary aquifers affects more than 100 M people around the world (Mukherjee et al, 2019). Developing countries such as Bangladesh, India, Thailand, Taiwan, and Vietnam are the worst impacted due to the occurrence of As in groundwater (Ghosh (Nath) et al, 2019).…”

Section: Arsenic In Groundwater Sourcesmentioning

confidence: 99%

Groundwater pollution: Occurrence, detection, and remediation of organic and inorganic pollutants

Kurwadkar

Kanel

Nakarmi

2020

Water Environment Research

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Groundwater pollution is a result of natural and anthropogenic activities. While the elevated levels of various inorganic constituents could be attributed to natural processes, such as geological weathering and aquifer characteristics, many times, anthropogenic activities also substantially pollute the groundwater. On the contrary, the occurrence of organic pollutants is primarily due to various anthropogenic activities. Extensive groundwater mining, the hydraulic connection between groundwater and other surface water bodies, and leaking underground buried infrastructure also contribute to groundwater pollution. Water resources are scarce commodities, and preserving groundwater quality is of critical concern. This paper documents instances of groundwater quality impact during the year 2019 due to both natural and anthropogenic activities throughout the world.

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“…Educational programs urged people to access safer water and contaminated wells were marked with red paint, but little was done to tap cleaner supplies and many people had no option but to carry on drinking contaminated water (Loewenberg 2017). Arsenic is present in most of the earth's rock, though recent research suggests that concentrations are found in magmatic arcs where tectonic plates collide (Mukherjee et al 2019). Most sediments deposited in Bangladesh come from high altitude magmatic rocks in the Himalayas or from granites and metamorphic rocks on its south and central slopes (Kinniburgh and Smedley 2001).…”

Section: Lithifyingmentioning

confidence: 99%

Sedimentary Ways

Bremner

2020

GeoHumanities

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This paper is a thought experiment to attune to the geo-physical and geo-political materialities of sediment, a terra-aqueous substance produced when the earth’s continental surfaces intra-act with the atmosphere and are chemically transformed by it. The paper is framed by questions of how to engage more closely with the dynamics of earth systems and of how social and political agency emerges alongside earth forces. Sediment is important to such questions because it is the mechanism by which the earth recycles itself and is thick with the climatological and geological histories that have conditioned the possibility of life on the planet. While acknowledging the import of Deleuze and Guattari’s metaphysics to such questions, the paper takes a material approach to them. It is based on field work in Bangladesh, but also traverses a range of scientific, historical and theoretical literature. It is arranged in four sections that loosely correspond to the sedimentary cycle. It follows sediment from chemical processes on rock surfaces in the Himalayas, to its lively travels in monsoonal rivers across flood plains to its eventual deposition and subterranean diagenesis. In each section, the paper discusses the material processes at work, their socio-political enmeshments and the theoretical implications of these intra-actions. The paper concludes that sediment serves as a reminder not only of close entanglements of geo-physical and geo-political becomings, but also of the profound indifference of earth systems to human affairs, and asks what this might mean for the re-imagination of politics.

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Plate tectonics influence on geogenic arsenic cycling: From primary sources to global groundwater enrichment

Cited by 68 publications

References 92 publications

Geostatistical model of the spatial distribution of arsenic in groundwaters in Gujarat State, India

Geostatistical model of the spatial distribution of arsenic in groundwaters in Gujarat State, India

Groundwater pollution: Occurrence, detection, and remediation of organic and inorganic pollutants

Sedimentary Ways

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