Insights into the structure, salvation, and mechanism of ArsC arsenate
reductase, a novel arsenic detoxification enzyme.
ASSESSMENT OF CHROMATE COPPER ARSENATE
IN TREATED WOOD.
The bacterium--identified by chance after the researchers had screened thousands of soil samples from old stock-dip sites--takes in a highly toxic form of arsenic (arsenite), and oxidises it to the much less dangerous and more easily immobilised arsenate
The International Agency for Research on Cancer recognizes arsenic and arsenic compounds as Group 1 Carcinogens, and the EU lists arsenic trioxide, arsenic pentoxide and arsenate
salts as Category 1 Carcinogens.
For a long time the tribal Berbers of the region around Bou Azzer had known of the outcropping arsenic-rich ore veins and of their cobalt arsenate
minerals, especially erythrite, whose beautiful violet-red color seized their attention.
2004) investigated the co-sorption of arsenate
and Zn(II) at the goethite-water interface at pH 4 and 7 with EXAFS spectroscopy.
Four years ago, the EPA banned an arsenic-and-chromium-based wood preservative called chromated copper arsenate
(CCA) and its use is being phased out in Canada and Europe as well.
This collection of 26 papers cover environmental impacts, assessment and management of human health risks, and end-of-life management and impacts with such topics as the impact of chromated copper arsenate
, production and management in Europe, Asia and Oceania, study designs for environmental impacts, leaching of chemicals and the impact on the soil, modeling for leaching of inorganic components, effects on soil and water, the cost of human exposure to chromated copper arsentate, methods of evaluating contamination, risks to children, identification and disposal of treated woods, biomediation through bacteria and other removal techniques, and disposal in landfills.
Treated Wood in Transition: Less Toxic Options in Preserved and Protected Wood" surveys the regulatory, legal and business aspects of what has happened in the treated wood market since chromated copper arsenate
(CCA) was taken off the market in early 2004.
However, the extensive use of lead arsenate
in insect control has raised questions regarding the toxicity of these elements to plants and to animals feeding on sprayed or dusted plants.
Mixed C&D recyclers have also been striving to keep wood treated with chromated copper arsenate
(CCA) out of their end products for several years, as the arsenic contained in CCA is undesirable in boiler fuel shipments and in mulch.
Small-scale bombings erupted in southern Thailand in 2002, and fighters began raiding government arsenate
, presumably to stockpile weapons for future terrorist attacks.