News tagged with arsenic
New life form found on Earth: Deadly arsenic breathes life into organisms (Update, Video)
(PhysOrg.com) -- Evidence that the toxic element arsenic can replace the essential nutrient phosphorus in biomolecules of a naturally occurring bacterium expands the scope of the search for life beyond Earth, ...
Space & Earth / Space Exploration
Dec 02, 2010 |
4.5 / 5 (48) |
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Scientists pinpoint origin of dissolved arsenic in Bangladesh drinking water
Researchers in MIT's Department of Civil and Environmental Engineering believe they have pinpointed a pathway by which arsenic may be contaminating the drinking water in Bangladesh, a phenomenon that has puzzled ...
Nov 15, 2009 |
4.6 / 5 (22) |
1
Critics raise doubts on NASA's arsenic bacteria
(PhysOrg.com) -- NASA’s announcement last week that bacteria had been discovered that appeared to replace phosphorus with arsenic and thrive even in the most poisonous environments, has now come under ...
Dec 09, 2010 |
5 / 5 (17) |
15
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3 Questions: Sara Seager on the discovery of a 'new' form of life
Yesterday, NASA announced the discovery of a bacterium that can grow on a diet of arsenic and thus doesn't share the biological building blocks traditionally associated with all life forms. The discovery raises ...
Space & Earth / Space Exploration
Dec 03, 2010 |
5 / 5 (10) |
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Shedding light on risks of LEDs
If you haven't taken down your Christmas lights yet, do it very carefully. Those modern, light-emitting diode bulbs marketed as safe, environmentally preferable alternatives to traditional lights actually ...
Mar 01, 2011 |
3.4 / 5 (14) |
22
Arsenic used to treat leukemia
(PhysOrg.com) -- Arsenic, known in the West mainly as a poison, has been used in traditional Chinese medicine for around two thousand years for the treatment of conditions such as syphilis and psoriasis. It ...
Apr 12, 2010 |
4.9 / 5 (7) |
2
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NASA's arsenic life-form scientist answers critics
The NASA-funded scientist whose discovery of a bacterium that thrives on arsenic prompted an avalanche of criticism responded Thursday with a statement answering questions about her research. ...
Dec 16, 2010 |
3.8 / 5 (8) |
3
Hair analysis proves it: Legendary racehorse Phar Lap died of arsenic poisoning in 1932
(PhysOrg.com) -- Phar Lap was a legendary racehorse that won many notable races. After its triumph in the famous Agua Caliente Handicap in 1932 in Mexico, the animal died in agony under mysterious circumstances ...
Chemistry / Analytical Chemistry
May 04, 2010 |
4.5 / 5 (6) |
2
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LED products billed as eco-friendly contain toxic metals, study finds
Those light-emitting diodes marketed as safe, environmentally preferable alternatives to traditional lightbulbs actually contain lead, arsenic and a dozen other potentially hazardous substances, according to newly published ...
Feb 10, 2011 |
2.4 / 5 (11) |
11
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Searching for Alien Life, on Earth
If you spend an afternoon walking along the muddy shore of Mono Lake, with the eastern flank of the Sierra Nevada mountains looming majestically in the background, you’ll no doubt discover, as others have ...
Oct 05, 2009 |
5 / 5 (5) |
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Eliminating the threat of nuclear arms
President Barack Obama has made his intention of eliminating all nuclear weapons a tenet of his administration's foreign policy. Professor Sidney Drell, a US theoretical physicist and arms-control expert, explains in February's ...
Feb 04, 2009 |
3.5 / 5 (6) |
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Scientists find new solutions for the arsenic-poisoning crisis in Asia
(PhysOrg.com) -- Every day, more than 140 million people in southern Asia drink groundwater contaminated with arsenic. Thousands of people in Bangladesh, Cambodia, India, Myanmar and Vietnam die of cancer each year from chronic ...
Mar 24, 2009 |
4.8 / 5 (4) |
1
First 'nanorust' field test slated in Mexico
Rice University researchers today announced that the first field tests of "nanorust," the university's revolutionary, low-cost technology for removing arsenic from drinking water, will begin later this year ...
Nanotechnology / Bio & Medicine
May 27, 2009 |
5 / 5 (3) |
2
Scientists offer solutions to arsenic groundwater poisoning in southern Asia
An estimated 60 million people in Bangladesh are exposed to unsafe levels of arsenic in their drinking water, dramatically raising their risk for cancer and other serious diseases, according to the World Health Organization ...
May 27, 2010 |
5 / 5 (3) |
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Deadly effect of arsenic in drinking water measured in massive study
More than 20 percent of deaths in a study of 12,000 Bangladeshis were attributable to arsenic exposure from contaminated drinking water, new research reports.
Jun 18, 2010 |
5 / 5 (3) |
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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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