News tagged with arsenic
Tracing arsenic threat to groundwater
In the driest inhabited continent on earth, underground water accounts for a large portion of Australia’s most precious resource – freshwater.
Mar 29, 2012 |
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Arsenic in Goldfields soil needs monitoring
Exposure to arsenic in soil and mine waste may have contributed to a slight increase in past cancer risk in socio-economically disadvantaged areas in the Goldfields region of Victoria, according to new research published ...
Mar 22, 2012 |
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Contamination of La Selva geothermal system in Girona, Spain
Monitoring the construction of wells, avoid over-exploiting cold groundwater close to hot groundwater, and controlling mineral water extraction. These are the recommendations from the Polytechnic University ...
Feb 29, 2012 |
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Black arsenic: Fact or fiction? Synthesis and identification of metastable compounds
(PhysOrg.com) -- Phosphorus and arsenic are on top of each other in one group of the periodic table, so they have many similar properties. In addition to tubular forms, phosphorus is found in white, red, black, ...
Feb 17, 2012 |
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Research finds arsenic supply at highest risk
Modern technology depends on reliable supplies of a wide variety of materials, but there is increasing concern about the dependability of those supplies.
Feb 16, 2012 |
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Looks like we’re still looking for earthly life forms on other planets
In late 2010, NASA set the Internet buzzing when it called a press conference to discuss an astrobiological finding that would impact the search for extraterrestrial life. Many speculated that some primitive ...
Feb 02, 2012 |
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Researchers study toenails as marker for arsenic exposure
(PhysOrg.com) -- UA scientists have teamed up to study the relationship between arsenic in human toenails and arsenic concentration in drinking water. Exposure to arsenic is associated with several chronic diseases ranging ...
Dec 07, 2011 |
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Geologists find ponds not the cause of arsenic poisoning in India's groundwater
The source of arsenic in India's groundwater continues to elude scientists more than a decade after the toxin was discovered in the water supply of the Bengal delta in India. But a recent study with a Kansas State University ...
Nov 02, 2011 |
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Computer virus did not target US drone fleet: general
A computer virus that affected the US military's drone fleet last month was not "specifically" aimed at the unmanned aircraft's network, the head of US Strategic Command said Tuesday. ...
Oct 18, 2011 |
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Natural processes can limit spread of arsenic in water, study says
(PhysOrg.com) -- Many people in Bangladesh and other parts of Asia have been poisoned by drinking groundwater laced with arsenic—not introduced by humans, but leached naturally from sediments, and now ...
Oct 11, 2011 |
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Bacteria can aid toxic environmental cleanups, may boost ag production, researchers report
(PhysOrg.com) -- Remarkable bacteria that resist arsenic could greatly enhance cleanups of toxic environments and potentially boost agricultural production, according to a new University of Florida study.
Oct 05, 2011 |
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Hungary toxic levels 'lower than expected' after spill
A year after Hungary's worst chemicals spill released vast amounts of poisonous red mud, levels of toxic substances are lower than feared but still above average, Greenpeace said on Wednesday.
Sep 28, 2011 |
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'Plastic bottle' solution for arsenic-contaminated water threatening 100 million people
With almost 100 million people in developing countries exposed to dangerously high levels of arsenic in their drinking water, and unable to afford complex purification technology, scientists today described a simple, inexpensive ...
Sep 01, 2011 |
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Replication of arsenic life experiment not successful so far
One of the most vocal and ardent critics of the so-called 'arsenic life' experiment which was published in December 2010 was biologist Rosie Redfield from the University of British Columbia in Vancouver. The s ...
Aug 11, 2011 |
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Archaeological dig uncovers artifacts
Scientific equipment belonging to an Enlightenment figure has been found in an archaeological dig at the University.
Other Sciences / Archaeology & Fossils
Jun 29, 2011 |
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Arsenic
Arsenic (pronounced /ˈɑrsnɪk/; also /ɑrˈsɛnɪk/ when attributive) is the chemical element that has the symbol As and atomic number 33. Arsenic was first documented by Albertus Magnus in 1250. Its atomic mass is 74.92. Arsenic is a notoriously poisonous metalloid with many allotropic forms, including a yellow (molecular non-metallic) and several black and grey forms (metalloids). Three metalloidal forms of arsenic, each with a different crystal structure, are found free in nature (the minerals arsenic sensu stricto and the much rarer arsenolamprite and pararsenolamprite). However, it is more commonly found as arsenide and in arsenate compounds, several hundred of which are known. Arsenic and its compounds are used as pesticides, herbicides, insecticides and in various alloys.
For more information about Arsenic, read the full article at
Wikipedia.
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