Historical use of lead arsenate
insecticides, resulting soil contamination, and implications for soil remediation.
Inorganic as generally is more toxic and mobile than organoarsenic species, while trivalent arsenite [As(III)] is considered to be more toxic, soluble, and mobile than pentavalent arsenate
PRODUCT OVERVIEW II-8 Wood and its Biodeterioration II-8 Organisms Responsible for Wood Decay II-8 Fungi II-8 Termites II-9 Carpenter Ants II-9 Bacteria II-9 Wood-boring Beetles II-9 Marine Borers II-9 Need for Wood Preservation II-9 Wood Preservatives - Life Cycle Analysis II-9 Process of Wood Preservation II-10 Pressure Treatment Processes II-10 Non-Pressure Treatment Processes II-11 Wood Preservative Chemicals II-11 Waterborne Preservative Chemicals II-11 Major Types II-11 Chromated Copper Arsenate
(CCA) II-12 Table 1: Chemical Composition of CCA by Type (includes corresponding Graph/Chart) II-12 Acid Copper Chromate (ACC) II-12 Ammoniacal Copper Arsenate
If your deck was built before 2004, it could have been made with chromated copper arsenate
, which contains arsenic.
They cover linear and non-linear optical phenomena, luminescence and time-resolved emission spectra of Nd3+ and Er3+: silver zinc borate glasses, spectral features of lead arsenate
glasses doped with copper oxide, dielectric studies on alkali borate glasses mixed with iron oxide, a case study of treating a large cystic lesion in the anterior maxilla using glass reinforced hydroxyapatite, and guided bone regeneration using glass-reinforced hydroxyapatite and collagen membrane in treating peri-implantitis.
The amount of arsenic was determined using titrimetric determination of arsenate
after precipitation as silver arsenate
has begun production of ammoniacal copper zinc arsenate
Zirconium loaded apple peels were found to be able to extract anions such as phosphate, arsenate
, arsenite, and chromate ions from aqueous solutions.
They are treated with pentachlorphenol, chromated copper arsenate
, creosote or copper azole with severe environmental consequences.
The original "arsenic life" paper contended that the strain took up arsenate
(a combination of arsenic and oxygen) in place of phosphate, the structurally similar chemical that forms the backbone of DNA in living organisms.
Release date- 22102012 - Not long ago, some unassuming bacteria found themselves at the center of a scientific controversy: A group claimed that these microorganisms, which live in an environment that is rich in the arsenic-based compound arsenate
, could take up that arsenate
and use it - instead of the phosphate on which all known life on Earth depends.
Others joined in the fray, pointing out that the arsenate
ester bonds that would be required to make arsenic-based DNA are unstable in water, with an estimated half-life of less than one second.