The range of As concentrations found in natural waters is large, ranging from less than 0.5
μg l− 1 to more than 5000 μg l− 1. Typical concentrations in freshwater are less than 10 μg l …

Arsenic's history in science, medicine and technology has been overshadowed by its
notoriety as a poison in homicides. Arsenic is viewed as being synonymous with toxicity …

Environmental Soil Chemistry, Third Edition provides an up-to-date overview of the
interdisciplinary field of environmental soil chemistry. This classic text covers the …

The dynamics and availability of arsenic (As), cadmium (Cd), and other trace elements in
soils are of great concern to soil scientists. Owing to the human toxicity of As and Cd, the …

Abstract Calculated Mn (2p3/2) X-ray photoelectron spectra (XPS) of Mn2+, Mn3+, and
Mn4+ free ions are strikingly similar to Mn (2p3/2) spectra of Mn2+-, Mn3+-, and Mn4+ …

▪ Abstract Manganese (IV) oxides produced through microbial activity, ie, biogenic Mn
oxides or Mn biooxides, are believed to be the most abundant and highly reactive Mn oxide …

Arsenic (As) is recognized as a persistent and toxic contaminant in the environment that is
harmful to humans. Biochar, a porous carbonaceous material with tunable functionality, has …

The aim of this study was to develop a cost-effective method for As removal from aqueous
systems. To this end, pristine biochar (BC) was impregnated with Fe-Mn oxides and a …

Manganese oxides occur typically as cryptocrystalline and fine‐grained mixtures of different
Mn‐phases, carbonates, silicates, and Fe oxides/hydroxides; thus their characterization by …

Concentrations of naturally occurring arsenic in ground water vary regionally due to a
combination of climate and geology. Although slightly less than half of 30,000 arsenic …