News tagged with arsenic
'Kinks' in tiny chains reveal Brownian rotation
(PhysOrg.com) -- Rice University researchers have created a method to measure the axial rotation of tiny rods. The technique detailed in a paper by Sibani Lisa Biswal and her colleagues appears this month ...
May 19, 2011 |
5 / 5 (1) |
0
|
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
|
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) |
27
|
Link found between arsenic in drinking water and strokes
(PhysOrg.com) -- A new study in Michigan in the U.S. suggests the presence of moderate levels of arsenic in drinking water could increase the risk of strokes.
Nov 09, 2010 |
5 / 5 (2) |
0
|
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
|
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
|
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
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 |
5 / 5 (1) |
1
|
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 |
not rated yet |
0
|
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 |
4 / 5 (2) |
2
|
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
|
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
Accessing the risk of arsenic ingestion with mineralogy
Canadian researchers working at Brookhaven's National Synchrotron Light Source (NSLS) have created a method for determining how much of the arsenic in soil tailings -- byproducts of the mining industry -- ...
Sep 10, 2010 |
not rated yet |
0
|
New arsenic nanoparticle blocks aggressive breast cancer
You can teach an old drug new chemotherapy tricks. Northwestern University researchers took a drug therapy proven for blood cancers but ineffective against solid tumors, packaged it with nanotechnology and got it to combat ...
Nanotechnology / Bio & Medicine
Jul 15, 2010 |
5 / 5 (2) |
0
|
Arsenic shows promise as cancer treatment, study finds
Miss Marple notwithstanding, arsenic might not be many people's favorite chemical. But the notorious poison does have some medical applications. Specifically, a form called arsenic trioxide has been used as a therapy for ...
Jul 12, 2010 |
3 / 5 (1) |
4
|
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.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
