Sources of Arsenic in Groundwater and its Health …
The source of arsenic for groundwater is mainly geogenic in nature. ... health significance and present drinking water regulations with oral slope factors are also enumerated.
Arsenic in environment: historic, concepts, occurrence and …
Arsenic (As) occurs in the environment both naturally and by anthropogenic sources. It can be present in water, soils, minerals, sediments, and dust. Anthropogenic sources include use of As-contaminated irrigation water, mining, and food additives. Throughout history, As was widely used as a poison, a therapeutic agent for various …
I.1 Geogenic and anthropogenic sources of arsenic: Significance …
A tide excluding wall was constructed around the site in the 1970's. Tide exclusion and intensive drainage caused the oxidation of iron-sulfides and formation of severe acid sulfate soils across the site. A remediation program commenced at the site in 2001-2002. This has involved incrementally increasing tidal inundation of acid sulfate soils.
WATER RESOURCES Global threat of arsenic in …
The major source of inorganic arsenic in the diet is through arsenic-contaminated water, although ingestion through food, particularly rice, represents another im-portant route of exposure ( 3). As a consequence, ... Arsenic concentrations, excluding those known to originate from a depth greater than 100 m. Values are from the sources listed in ...
[PDF] Arsenic in Groundwater: A Summary of Sources and …
Arsenic (As) is a metalloid element (atomic number 33) with one naturally occurring isotope of atomic mass 75, and four oxidation states (-3, 0, +3, and +5) (Smedley and Kinniburgh, 2002). In the aqueous environment, the +3 and +5 oxidation states are most prevalent, as the oxyanions arsenite (H3AsO3 or H2AsO3 at pH ~9-11) and arsenate (H2AsO4 and …
Arsenic: Exposure Sources, Health Risks, and …
Arsenic is the 20th most common element in the earth's crust, and its toxic poten-tial has been known for millennia. Chronic exposure to arsenic, most commonly through natural …
Impact of Microplastics on the Fate and Behaviour of Arsenic …
Arsenic is toxic, carcinogenic, and widely distributed in groundwaters, with the World Health Organisation (WHO) estimating that the presence of arsenic in drinking water sources continues to negatively impact the health of 140 million people worldwide . Arsenic can be found in groundwaters in several European countries, Bangladesh, India …
Arsenic Exposure via Contaminated Water and Food …
India's population is also suffering from arsenic contamination via food and water consumption. Kumar et al. conducted a relevant study in Bihar, one of the major states of India. This study showed that more than 80% of water resources are contaminated with arsenic (the highest reported value was 2 mg/L).
Arsenic in the geo-environment: A review of sources, …
Arsenic contamination was first reported in Germany in 1885 and the first arsenic health effects (skin disorders) were found among residents drinking water (Bell Ville Disease) from wells in the province of Cardoba, Argentina in 1917 (Astolfi et al., 1981).Groundwater As contamination and its health effects were first noticed in 1960s, a …
Arsenic in India
Arsenic is introduced into soil and groundwater during weathering of rocks and minerals followed by subsequent leaching and runoff. It can also be introduced into soil and groundwater from anthropogenic sources. Arsenic is emitted into the atmosphere by high-temperature processes such as coal-fired power plants, burning vegetation and volcanism.
Arsenic | Definition, Symbol, Uses, & Facts | Britannica
Because arsenic has a range of oxidation states from -3 to +5, it can form a variety of different kinds of compounds. Among the most important commercial compounds are the oxides, the principal forms of which are arsenious oxide (As 4 O 6) and arsenic pentoxide (As 2 O 5).Arsenious oxide, commonly known as white arsenic, is obtained as …
ARSENIC AND ARSENIC COMPOUNDS
1.4. Environmental occurrence. Arsenic is the 20 th most common element in the earth's crust, and is emitted to the environment as a result of volcanic activity and industrial activities. Mining, smelting of non-ferrous metals and burning of fossil fuels are the major anthropogenic sources of arsenic contamination of air, water, and soil (primarily in the …
Arsenic and Drinking Water | U.S. Geological Survey
Arsenic is a naturally occurring element, but long-term exposure can cause cancer in people. There has been a substantial amount of research done to address arsenic in groundwater and drinking-water supplies around the country. The USGS studies local and national sources of arsenic to help health officials better manage our water …
Sources of Arsenic in Groundwater and Its Health Significance …
The source of arsenic for groundwater is mainly geogenic in nature. ... Vol. 15, No. 3, 2016 Nature Environment and Pollution Technology SOURCES OF ARSENIC IN GROUNDWATER AND ITS HEALTH SIGNIFICANCE 979. Arsenic contamination in surface drainage and groundwater in part of search, 146: 141-149. the Southern Asia tin …
National Institute of Environmental Health Sciences: …
Introduction. Arsenic is a naturally occurring, semimetallic element widely distributed in the Earth's crust. Arsenic levels in the environment can vary by locality, …
Arsenic toxicity: sources, pathophysiology and mechanism
Arsenic is a naturally occurring element that poses a significant threat to human health due to its widespread presence in the environment, affecting millions worldwide. Sources of arsenic exposure are diverse, stemming from mining activities, manufacturing processes, and natural geological formations. Arsenic manifests in both organic and ...
Source Generation of Arsenic Species and Spatial
It has been acknowledged that the main global sources of arsenic contamination are mining, nonferrous metal smelting, and metal ore processing. Many studies ... the significance of comprehending source generation and spatial distribution of arsenic species was the main focus. Information on arsenic and its effects on the …
A review on arsenic in the environment: contamination, …
Statistical significance of the data is determined using analysis of variance (ANOVA) ... As(iii) and As(v), the reduction and methylation of As, and the bioproduction of organ arsenic compounds. 8,139–141 Arsenic contamination with sources in water 142–169 of some locations over the world are summarized in Table 3.
Arsenic Exposure and Toxicology: A Historical Perspective
Nonetheless, because arsenic is ubiquitous in the environment, diet is the largest source of both inorganic and organic arsenic for typical individuals. Estimates of dietary inorganic arsenic intakes vary. In the United States, Schoof et al. ... the significance of metabolism of arsenic by the microbiota of the gastrointestinal tract ...
Mitigating dietary arsenic exposure: Current status in the …
Human activity is an important contributor to arsenic in the food system; Han et al. estimated that global industrial activities contributed 4.53 million metric tons of arsenic to the environment in the year 2000 alone, and identified the leading sources as mining, coal-fired power plants, and petroleum refining (Han et al., 2003).
Arsenic and Your Health fact sheet
The most common source of arsenic in people is contaminated drinking water. Because arsenic occurs naturally, waters that come in contact with particular rocks and soils may …
Arsenic Contamination in India
However, in 2012, BIS reduced the desirable limit of Arsenic from 0.05mg/l to 0.01mg/l while retaining the permissible limit of 0.05mg/l. Causes of Arsenic Contamination. Natural Sources: Arsenic contamination in groundwater is often a result of geological processes, where arsenic naturally occurs in certain rock formations. The release of ...
Environmental Source of Arsenic Exposure
Abstract. Arsenic is a ubiquitous, naturally occurring metalloid that may be a significant risk factor for cancer after exposure to contaminated drinking water, cigarettes, foods, industry, occupational environment, and air. Among the various routes of arsenic exposure, drinking water is the largest source of arsenic poisoning worldwide.
Arsenic toxicity: sources, pathophysiology and mechanism
Arsenic toxicity is a crucial public health problem influencing millions of people around the world. The possible sources of arsenic toxicity includes mining, manufacturing processes and natural ...
Arsenic Compounds
For most people, diet is the largest source of arsenic exposure, with usually smaller intakes from drinking water and air. Among foods, some of the highest levels are found in fish and shelfish; however, this arsenic ... statistical significance was reported, concentration dose-response relationships were documented, three species were ...
Arsenic | Public Health Statement | ATSDR
The predominant dietary source of arsenic is seafood, followed by rice/rice cereal, mushrooms, and poultry. While seafood contains the greatest amounts of arsenic, for fish and shellfish, this is mostly in an organic form of arsenic called arsenobetaine that is much less harmful. Some seaweeds may contain arsenic in inorganic forms that may be ...
Silicic volcanic rocks, a main regional source of geogenic arsenic …
Volcanic deposits and especially those containing abundant fine ash rich in glass shards are among the most common, worldwide sources of geogenic arsenic (As) in waters (Nordstrom, 2002; Bowell et al., 2014; Plant et al., 2014).The presence of inorganic As in drinking water with levels higher than the recommended limit (> 10 μg/L) presents a …
(PDF) Sources of Arsenic in Groundwater and its Health Significance …
Groundwater has been the major source of arsenic exposure to human population around the. Arsenic is present in earth's crust and occurs in more than 200 natural minerals. Under favourable environmental conditions, arsenic enters into the groundwater. Groundwater has been the major source of arsenic exposure to human population around the
Arsenic April 2021
Grains, produce, fish, and shellfish are significant sources of arsenic exposure via food. High arsenic levels have been found in fish and shellfish; however, arsenic in fish and …
Arsenic Contamination of Groundwater: A Review of Sources…
The degree of groundwater arsenic contamination by aforesaid anthropogenic sources is much less as compared to the natural sources; however, their contribution cannot be neglected. Arsenic in groundwater exists primarily as oxy anions representing two oxidation states: arsenic (arsenite) and arsenic (+V) (arsenate) [ 34, …