Palaeo-hydrogeological control on groundwater As levels in Red River delta, Vietnam

Jessen, Søren; Larsen, Flemming; Postma, Dieke; Viet, Pham Hung; Ha, Nguyen Thi Thu; Nhân, Phạm Quý; Nhan, Dang Duc; Duc, Thanh; Huệ, Nguyễn Thị; Huy, Trieu Duc; Luu, Tran Thi; Hà, Đặng Hoàng; Jakobsen, Rasmus

doi:10.1016/j.apgeochem.2008.06.015

Cited by 36 publications

(21 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest concentrations are present in a 20 km wide band along the NW-SE boundary of the delta plain, to the SW of the modern Red River course, and coinciding with the location of the palaeo-Red River channel (9,000 y B.P.) (15). The spatial distribution of As in this region matches a pattern of elevated PO 4 3− , NH 4 þ , and dissolved organic carbon (DOC) concentrations, along with negative redox This article contains supporting information online at www.pnas.org/lookup/suppl/ doi:10.1073/pnas.1011915108/-/DCSupplemental.…”

Section: Resultsmentioning

confidence: 99%

“…The Lower Pleistocene (LP) aquifer, part of the Hanoi formation (lower boundary: 700,000 y B.P. ), mainly consists of coarse yellow and brown sediments (15,29) and is the only aquifer in the delta with an almost homogeneous presence. The Upper Pleistocene (UP) aquifer (lower boundary 125,000 y B.P.…”

Section: Resultsmentioning

confidence: 99%

“…In 2001 it was reported for the first time that groundwater used as drinking water in the densely populated Red River Delta in Vietnam contains high As levels (3). Since then, regional groundwater studies have been carried out in the vicinity of Hanoi city (10-30 km distance), on the banks of the Red River and its adjacent floodplains (5,(10)(11)(12)(13)(14), and along a 45 km transect across the southern and central part of the delta (15). High As levels were found in both the Holocene and Pleistocene aquifers (3,5,10,13).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century

Winkel

Trang

Lan

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

264

173

View full text Add to dashboard Cite

Arsenic contamination of shallow groundwater is among the biggest health threats in the developing world. Targeting uncontaminated deep aquifers is a popular mitigation option although its long-term impact remains unknown. Here we present the alarming results of a large-scale groundwater survey covering the entire Red River Delta and a unique probability model based on three-dimensional Quaternary geology. Our unprecedented dataset reveals that ∼7 million delta inhabitants use groundwater contaminated with toxic elements, including manganese, selenium, and barium. Depth-resolved probabilities and arsenic concentrations indicate drawdown of arsenic-enriched waters from Holocene aquifers to naturally uncontaminated Pleistocene aquifers as a result of >100 years of groundwater abstraction. Vertical arsenic migration induced by large-scale pumping from deep aquifers has been discussed to occur elsewhere, but has never been shown to occur at the scale seen here. The present situation in the Red River Delta is a warning for other As-affected regions where groundwater is extensively pumped from uncontaminated aquifers underlying high arsenic aquifers or zones.three-dimensional risk modeling | anthropogenic influence | drinking water resources | geogenic contamination | health threat

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century

Winkel

Trang

Lan

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

264

173

View full text Add to dashboard Cite

show abstract

“…This issue raises the question as to whether arsenic mobilization is anthropogenic (Thuy et al 2015). Arsenic levels exceeded the current WHO standard of 10 μg/L in as many as 72% of the tubewells included in the study (Agusa et al 2006) although there was a substantial degree of variation between different areas with concentrations ranging from 0.1 to 3050 μg/L Berg et al 2007;Postma et al 2010;Agusa et al 2009;Editorial 2010;Larsen et al 2008;Nguyen and Itoi 2009;Jessen et al 2008;Eiche et al 2008) and an average arsenic concentration from 159 to 430 μg/L (Berg et al 2001), respectively. The sources of contamination are distributed over a large area in Red River Delta.…”

Section: The Situation In the Red River Deltamentioning

confidence: 75%

Remarks on the current quality of groundwater in Vietnam

Luu

2017

Environ Sci Pollut Res

View full text Add to dashboard Cite

This paper reviews the current quality of groundwater in Vietnam. In Vietnam, groundwater is obtained primarily from tubewells, which have high concentrations of pollutants such as As, Fe, Mn, and NH 4 + . In the areas where groundwater tests were conducted, arsenic levels ranged from 0.1-3050 μg/L, which substantially exceed the standard of 10 μg/L which has been established by the WHO. Contamination sources are distributed over a large area from the Red River Delta in the north to the Mekong River Delta in the south, putting as many as ten million people at risk of adverse health effects. Levels of arsenic and iron in sediment are strongly correlated, which indicate that the presence of arsenic in groundwater results from the reduction of arsenic bound to iron oxyhydroxides. It is important to raise awareness of these issues among the Vietnamese public by disseminating information about the negative effects of contaminated drinking water, as well as carrying out long-term research projects to identify other sources of contamination and improving water treatment technology and water management capabilities.

show abstract

“…Tran et al (2012) undertook geophysical investigations to study the origin and extent of fresh groundwater, salty paleowaters, and recent saltwater intrusions in the RRD. Arsenic pollution of groundwater in the RRD has been investigated by various researchers such as Winkel et al (2011), Berg et al (2008), Jessen et al (2008) and Agusa et al (2005). In our earlier studies, we investigated the spatial characteristics of the aquifer system (Bui et al, 2011) as well as groundwater level trends in the entire RRD (Bui et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Identification of spatio-seasonal hydrogeochemical characteristics of the unconfined groundwater in the Red River Delta, Vietnam

Nguyen

Kawamura

Tong

et al. 2015

Applied Geochemistry

View full text Add to dashboard Cite

Palaeo-hydrogeological control on groundwater As levels in Red River delta, Vietnam

Cited by 36 publications

References 53 publications

Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century

Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century

Remarks on the current quality of groundwater in Vietnam

Identification of spatio-seasonal hydrogeochemical characteristics of the unconfined groundwater in the Red River Delta, Vietnam

Contact Info

Product

Resources

About