The human use of toxic heavy metals is here to stay. In addition to intentional poisoning with
arsenic (40)(arsenic levels in the hair of Napoleon Bonaparte approached 40 ppm, more …

Arsenic is a notorious poison classified as a carcinogen, a teratogen and a clastogen that
ranks number one on the Environmental Protection Agency's priority list of drinking water …

Naturally occurring arsenic is found predominantly as arsenate [As (V)] or arsenite [As (III)],
and can be readily oxidized or reduced by microorganisms. Given the health risks …

I magine a planet with an atmosphere lacking oxygen, its landscape dotted with volcanic
craters, caustic oceans, and basins of brine. Yet, amazingly, these oceans and brines teem …

Arsenic causes threats for environmental and human health in numerous places around the
world mainly due to its carcinogenic potential at low doses. Removing arsenic from …

Significant concentrations of dissolved inorganic arsenic can be found in the waters of a
number of lakes located in the western USA and in other water bodies around the world …

A large number of industries release their untreated wastes in the environment causing an
increase in the concentration of toxic pollutants including heavy metal ions in ground and …

Anoxic bottom water from Mono Lake, California, can biologically reduce added arsenate
without any addition of electron donors. Of the possible in situ inorganic electron donors …

Microbial biotransformations are major contributors to the arsenic biogeocycle. In parallel
with transformations of inorganic arsenic, organoarsenicals pathways have recently been …

The first observation of bacterial oxidation of arsenite to arsen-ate was described in 1918
(5), but it was only in 1992 that the first arsenite oxidase was isolated (1). Arsenite oxidase …