Recent improvements in sample collection and analytical techniques have suggested that
As (III) is more prevalent in groundwater than previously believed. Indeed, reducing …

Arsenic (As) is a metalloid belonging to the group of V (A) elements (N, P, As, Sb, and Bi). In
nature, it can exist in three possible oxidation states: the metalloid (0), the trivalent (-3 or+ 3) …

Adsorption isotherms in solutions with ionic strengths of 0.01 at 25° C were measured over
the arsenite and arsenate concentration range 10− 7− 10− 3 M and the pH range 4–10. At …

The concentration of arsenic has been determined in natural iron oxyhydroxides and oxide
minerals extracted from soils at the Ashanti mine, Ghana, and was found to vary from 2 to …

The kinetics of As (V) adsorption by ferrihydrite was investigated in coprecipitation and
postsynthesis adsorption experiments conducted in the pH range 7.5–9.0. In coprecipitation …

The bonding structures of arsenite (As (III)) and arsenate (As (V)) on goethite (α-FeOOH)
were studied by Transmission-Fourier Transform Infrared (T-FTIR) and Attenuated Total …

Arsenic and iron concentrations were measured in surficial sediments and in interstitial and
overlying waters at 22 littoral stations of 16 lakes. The lakes were chosen to cover values of …

An investigation of the sorption of As (III) and As (V) species by two humic acids (HA I and
HA II) has shown that As uptake varies with pH, adsorbate concentration and ash content of …

Boiling and acidification of hydrothermal solutions are important mechanisms that lead to the
deposition of base, precious, and volatile metals in epithermal systems. Computer models of …

Arsenic toxicity, mobility, and bioavailability in soil-water systems are highly dependent on
its oxidation states and chemical species. In this study, both indirect (FTIR) and direct (X-ray …