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Last updated on April 24, 2014 at 13:10 EDT

Latest Arsenate Stories

Study Confirms Bacterium Proteins Bond To Phosphate, Not Arsenate
2012-10-04 08:09:51

Lawrence LeBlond for redOrbit.com - Your Universe Online A 2010 controversial study that discovered a certain bacterium that used arsenic instead of phosphorus to build its DNA had been heavily scrutinized by the scientific community. Other researchers, awestruck by such a revelation, set out to replicate the study, yet were unable to glean the same results. Now, after intense studies over the past two years, researchers from Israel, France and Switzerland have found that the bacterium...

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2012-07-10 07:28:11

Lee Rannals for redOrbit.com - Your Universe Online Scientists have disproved a 2010 NASA study regarding how some bacterial life can thrive on arsenic. The journal Science said that new research shows the original 2010 controversial study results did not match up to the new findings. "Contrary to an original report, the new research clearly shows that the bacterium, GFAJ-1, cannot substitute arsenic for phosphorus to survive," said a statement by the U.S. journal. The same...

2010-06-09 14:17:11

Insights into arsenic transport and tolerance Arsenic is toxic to most forms of life, and occurs naturally in soil and ground water in many regions of the world. Chronic exposure to arsenic has been linked to lung, bladder and kidney cancer, and thus there are strict limits on allowable levels or arsenic in drinking water. Chemically similar to phosphorus, arsenic forms arsenate (AsO43-), which closely resembles phosphate (PO43-). Arsenate interferes with many phosphate-requiring metabolic...

2007-09-28 06:00:00

By Xiao, Yabing Ling, Jie; Qian, Shahua; Lin, Anqing; Et al ABSTRACT: A novel method of preconcentration of trace arsenite and arsenate by using titanium dioxide nanoparticles as adsorbent was described. The concentrations of preconcentrated arsenite and arsenate were determined by a silver diethyldithiocarbamate spectrophotometric method without desorption. Batch adsorption experiments were carried out as a function of the pH, contact time, amount of titanium dioxide nanoparticles, and...