Gourt > Science > Environment > Water Resources > Groundwater > Arsenic Contamination
Pollution is the release of chemical, physical, biological or radioactive contaminants to the environment. Principal forms of pollution include:
- air pollution, the release of chemicals and particulates into the atmosphere. Common examples include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs), and nitrogen oxides produced by industry and motor vehicles. Ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight.
- water pollution affects oceans and inland bodies of water. Examples include organic and inorganic chemicals, heavy metals, petrochemicals, chloroform, and bacteria. Water pollution may also occur in the form of thermal pollution and the depletion of dissolved oxygen.
- soil contamination often occurs when chemicals are released by spill or underground storage tank leakage. Contaminants include hydrocarbons, heavy metals, MTBE, herbicides, pesticides and chlorinated hydrocarbons. Often leads to water pollution via surface runoff and leaching to groundwater.
- radioactive contamination, added in the wake of 20th-century discoveries in atomic physics. (See alpha emitters and actinides in the environment.)
- noise pollution, which encompasses roadway noise, aircraft noise, industrial noise as well as high-intensity sonar.
- light pollution, includes light trespass, over-illumination and astronomical interference.
- visual pollution, which can refer to the presence of overhead power lines, highway billboards, scarred landforms (as from strip mining), open storage of junk or municipal solid waste.
Sources and causes
Arguably the principal source of air pollutants worldwide is motor vehicle emissions. While the U.S. has adopted stringent emissions controls, the EU has not been as assertive in this field; nevertheless, the U.S. is still the leading contributor to mobile source air emissions merely due to the very high number of vehicle miles travelled per capita. Underdeveloped countries lag severely in emission controls on motor vehicles, especially roadway vehicles, and on a per vehicle mile travelled basis produce many times the emissions of the U.S fleet.
More on [ Pollution ]
Water, water everywhere, but Overdale Park residents are afraid to drink. Arsenic contamination forces hard choices: http://bit.ly/5VESZB
issaquahpress (The Issaquah Press) Wed, 09 Dec 2009 20:35:46 -0000
Water, water everywhere, but Overdale Park residents are afraid to drink. Arsenic contamination forces hard choices: http://bit.ly/5VESZB
The contamination of underground water with both arsenic & fluoride could possibly be the cause of this disease http://chilp.it/?6d78af
vitalisnews (vitalisnews) Mon, 07 Dec 2009 05:24:16 -0000
The contamination of underground water with both arsenic & fluoride could possibly be the cause of this disease http://chilp.it/?6d78af
Arsenic Contamination of Groundwater - From the British Geological Survey; includes detailed reports of the surveys carried out in Ghana and Bangladesh.
Meta Description: [ BGS - Groundwater studies for Arsenic Contamination in Bangladesh and Ghana - home page ]
Arsenic Drinking Water Groundwater Contamination and Water Testing - Arsenic in drinking water; information on sources of contamination and reported groundwater concentrations throughout the United States. Wilkes University arsenic research site.
Meta Description: [ Arsenic in drinking water information on sources of contamination and
reported groundwater concentrations throughout the United States. ]
Arsenic in Drinking Water (1999) - Open Book; from the Commission on Life Sciences (US). Includes sections on chemistry, health effects, biomarkers, and variation in human sensitivity.
Arsenic in Drinking Water; WHO Factsheet - Summarises the causes, possible remedies, and the extent of arsenic pollution globally and discuss the problem in Bangledesh. WHO guideline limit for As in drinking water is 0.05mg/l.
Arsenic in Groundwater of the Red River Delta of Northern Vietnam - Study on arsenic contamination of groundwater and drinking water in the Hanoi area, including review of technologies for As removal.
Arsenic Project - Harvard University site on the study and remediation of chronic arsenic poisoning.
Meta Description: [ arsenic project introduction: Harvard and MIT ]
Asia Arsenic Network - Variety of articles related to arsenic contamination, remediation and effect of arsenic on humans.
Groundwater Pollution in Bangladesh - Online presentation and maps document the arsenic contamination problem and research into its causes.
Meta Description: [ This site offers a lot of information about the groundwater contamination by arsenic in Bangladesh. ]
London Arsenic Group - Research group based at University of London discusses geochemical palaeohydrological controls on pollution of groundwater by arsenic. Projects on Bangledesh, West Bengal and Viet Nam. Regularly updated links to other arsenic related sites.
Meta Description: [ * ]
Natural Arsenic in Groundwater: Science, Regulation, and Health Implications - Summary points of 2001 conference session on arsenic contamination problems.
Seymour High School Science Club - Features information about the group's current project about groundwater testing for arsenic and other substances in the Seymour, Wisconsin, USA area. Page includes news, member biographies and photos.
Meta Description: [ Seymour High School Science Clubs webpage, contains information on members, contacting us, our projects Arsenic Groundwater Study ]
USGS - Arsenic in Ground Water of the United States - Publications, maps, and data on arsenic in U.S. groundwater. Links to other arsenic resources.
Meta Description: [ Publications, maps, and data on arsenic in ground water of the United States ]
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