Arsenic Contamination in Groundwater of Bangladesh
Ullah (1998) reported that arsenic concentration in Bangladesh soils ranged from 4-8 mg kg -1 . However, in areas where irrigation is performed with arsenic contaminated groundwater, soil As level ...
Arsenic contamination in groundwater in Bangladesh: implications and
Abstract: Arsenic contamination of groundwater in Bangladesh has been recognized as a major public problem. The arsenic contamination was first identified in the tubewell water in 1993 in a northern district of Bangladesh. Tubewells are the main source of drinking water in rural areas, and except hilly and terrace upland throughout the ...
Anthropogenic influences on groundwater arsenic concentrations …
Throughout Bangladesh, and in some other regions where arsenic contamination is likely 42, our research suggests that the development of artificial ponds above wells should be avoided if it is ...
Study shows consequences of arsenic-tainted well …
Widespread use of arsenic-contaminated water in Bangladesh during the 20 th century has been called by the World Health Organization the largest mass poisoning in history. A new study co-authored by Yale economist Mark Rosenzweig finds that, in …
Arsenic Contamination in Bangladesh: Contemporary …
Abstract. For thousands of years, groundwater has served as a unique and reliable source of potable water in developed as well as developing countries. But, at the end of the twentieth century, groundwater contamination of arsenic in Bangladesh is a serious national problem. Sixty-one districts out of sixty-four districts currently have been ...
Heavy Metal and Metalloid Pollution of Soil, Water and …
In Bangladesh, ground water arsenic (As) contamination has become a major public health problem. Millions of people are drinking As-contaminated water and this mass poisoning is the biggest As disaster in the world [ 5, 6, 7 ].
Water pollution in Bangladesh and its impact on public health
Arsenic contamination in groundwater is a major threat to public health in Bangladesh (Smith et al., 2000). Groundwater pollution is very alarming for Bangladesh as 95% of drinking water is derived from groundwater sources ( Chowdhury, 2010 ).
Arsenic contamination of irrigation water, soil and crops in Bangladesh …
1.1 Arsenic contaminated irrigation water: the risks. 2. Arsenic in agriculture: current knowledge. 2.1 Soil chemistry . 2.2 Crops . 2.3 Arsenic speciation in foods. 3. Bangladesh . 3.1 Arsenic in irrigation water, soil and crops . 3.2 Human exposure . 3.3 Agricultural management options . 4. Summary and recommendations
Global threat of arsenic in groundwater | Science
However, in most of the large-scale cases of geogenic arsenic contamination in groundwater, arsenic accumulates in aquifers composed of recently deposited alluvial sediments. Under anoxic …
Present status and mitigation approaches of arsenic in the
Arsenic (As) contamination in groundwater has been disclosed in over 70 countries with a population of about 150 million people worldwide, with high concentrations discovered in ten countries in south and southeast Asia, namely Bangladesh, India, Cambodia, China, Laos, Myanmar, Nepal, Pakistan, Taiwan, and Vietnam, with over 110 …
Arsenic contamination of Bangladesh aquifers exacerbated …
Abstract. Confining clay layers typically protect groundwater aquifers against downward intrusion of contaminants. In the context of groundwater arsenic in Bangladesh, we challenge this notion here by showing that organic carbon drawn from a clay layer into a low-arsenic pre-Holocene (>12 kyr-old) aquifer promotes the reductive dissolution of ...
Arsenic poisoning of Bangladesh groundwater | Nature
As many as a million water wells drilled into Ganges alluvial deposits in Bangladesh and West Bengal may be contaminated with arsenic 1,2,3,4,5,6.Measured arsenic concentrations 1,2,3,4,5,6 reach ...
Arsenic contamination in food chain in Bangladesh: …
Arsenic contamination in groundwater and foodstuff in Bangladesh is one of the severe public health concerns. Even decades after the problem was identified, …
Arsenic Contamination of Bangladesh Paddy Field Soils: …
Arsenic contaminated groundwater is used extensively in Bangladesh to irrigate the staple food of the region, paddy rice (Oryza sativa L.). To determine if this irrigation has led to a buildup of arsenic levels in paddy fields, and the consequences for arsenic exposure through rice ingestion, a survey of arsenic levels in paddy soils and …
Arsenic Contamination in Bangladesh: Contemporary …
Arsenic contamination in groundwater is a severe problem in Bangladesh to ensure a source of safe drinking water for the last three decades (Abedin & Shaw, 2013; Adeloju et al., 2021). The annual ...
Status of groundwater arsenic contamination in Bangladesh…
The magnitude of groundwater As contamination in Bangladesh surfaced only after the International Conference on As held in Dhaka, Bangladesh (International Conference on Arsenic, 1998). During this conference, SOES and DCH reported that 66% and 51% of 8065 hand tubewells water samples from 60 districts of Bangladesh …
Origin of arsenic in Bangladesh groundwater
Twenty years ago, Smith and colleagues described groundwater arsenic (As) contamination in Bangladesh as the "largest mass poisoning of a population in history." An estimated 60 million people were unknowingly drinking groundwater containing dangerous concentrations of naturally occurring As. Today, despite a much-improved …
The Poisoning of Bangladesh: How Arsenic Is Ravaging a …
Arsenic is not just a Bangladesh problem — it can be found in drinking water supplies around the world. Maine, Massachusetts, Texas, and half a dozen other states have all had arsenic contamination problems, says Joseph Graziano, a professor of environmental health sciences and pharmacology at Columbia University.
Arsenic Contamination of Soil and Water and Related …
Arsenic (As) is a recognized naturally hazardous metalloid that has long been linked to human poisoning. Bangladesh is now dealing with a major public health crisis, with arsenic contamination in drinking water and food crops putting millions of people at risk. Arsenic accumulates in large quantities in Bangladesh's farmlands.
Arsenic contamination in groundwater in …
Arsenic contamination of groundwater in Bangladesh has been recognized as a major public problem. The arsenic contamination was first identified in …
Evaluating arsenic contamination in northwestern Bangladesh…
One of the biggest environmental worries in the world today is the risk of arsenic (As) contamination in groundwater. The Atomic Absorption Spectrometer (AAS) was used in this work to assess the As content in groundwater samples from 38 shallow (27 m) tubewells in northwest Bangladesh to determine the existing situation, potential …
Contamination of drinking-water by arsenic in Bangladesh…
The contamination of groundwater by arsenic in Bangladesh is the largest poisoning of a population in history, with millions of people exposed. This paper describes the history of the discovery of arsenic in drinking-water in Bangladesh and recommends intervention strategies. Tube-wells were installed to provide ''pure water'' to ...
A Review of Groundwater Arsenic Contamination in …
Although the government of Bangladesh has made its population's access to safe drinking water a priority agenda item, there are still pockets of the population that …
Arsenic Contamination in Bangladesh: Contemporary …
Sixty-one districts out of sixty-four districts currently have been affected by arsenic contamination and up to 77 million people in Bangladesh have been exposed …
Impacts of physical and chemical aquifer heterogeneity
We explore the effects of physical and chemical aquifer heterogeneity on basin-scale solute transport where the focus is the vulnerability of pumping wells to contamination from shallower strata using the example of arsenic contamination in the Bengal Basin of Bangladesh and India.
Arsenic contamination of Bangladesh aquifers …
In the context of groundwater arsenic in Bangladesh, we challenge this notion here by showing that organic carbon drawn from a clay layer into a low-arsenic …
A Review of Groundwater Arsenic Contamination in Bangladesh…
Arsenic contamination in drinking water has a detrimental impact on human health which profoundly impairs the quality of life. Despite recognition of the adverse health implications of arsenic toxicity, there have been few studies to date to suggest measures that could be taken to overcome arsenic contamination. After the statement …
Up to 220 million people globally may be at risk of arsenic
Scientists have previously identified many hot spots of arsenic contamination in groundwater, including regions of Bangladesh, Argentina and Vietnam (SN: 11/20/02; SN: 3/5/15). But data on ...
Groundwater arsenic contamination in Bangladesh and …
To date, we have collected 10,991 water samples from 42 arsenic-affected districts in Bangladesh for analysis, 58,166 water samples from nine arsenic-affected districts in West Bengal. Of the water samples that we analyzed, 59 and 34%, respectively, contained arsenic levels above 50 microg/L. Thousands of hair, nail, and urine samples from ...
Can information alone change behavior? Response to arsenic
Response to arsenic contamination of groundwater in Bangladesh ... (BGS/DPHE, 2001) Arsenic contamination surfaced in Bangladesh after a successful health campaign promoted drinking groundwater rather than surface water starting in the 1970s. The change in behavior reduced the incidence of water-borne diseases, but …