Arsenite minerals are very rare oxygen-bearing arsenic minerals. Classical world localities where such minerals occur include the complex skarn manganese deposit at Långban (Sweden) and the polymetallic Tsumeb deposit (Namibia). The most often reported arsenite anion in minerals is the AsO 33− anion, present for example in reinerite Zn 3 (AsO 3) 2.

In chemistry, an arsenite is a chemical compound containing an arsenic oxyanion where arsenic has oxidation state +3. Note that in fields that commonly deal with groundwater chemistry, arsenite is used generically to identify soluble As III anions.

Arsenite, As III, and arsenate, As V, are the predominant oxidation states under, respectively, reducing and oxygenated conditions (WHO, 2001; IARC, 2004). From a biological and toxicological perspective, there are three major groups of arsenic compounds:

arsenate mineral, any of a group of naturally occurring compounds of arsenic, oxygen, and various metals, most of which are rare, having crystallized under very restricted conditions.

2020年2月15日 · Compared to synthetic adsorbents, the low cost and abundance of natural ferruginous manganese ore (NFMO), make it a potentially attractive adsorbent for application in large-scale treatments. Here, we investigated the simultaneous oxidation and adsorption behaviour of As (III) with three NFMOs, each consisting of different Mn/Fe molar ratios.

The principal ore mineral of Pb is galena [PbS], and the predominant sulfates derived from it are anglesite [PbSO 4] and plumbojarosite. Partial substitution of Pb for the alkali-site cations also occurs in other members of the jarosite supergroup.

Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO 4) 3− anion group and, more rarely, other arsenates with anions like AsO 3 (OH) 2− (also written HAsO 42−) (example: pharmacolite Ca (AsO 3 OH). 2H 2 O) or (very rarely) [AsO 2 (OH) 2] − (example: andyrobertsite).

2019年6月1日 · The results of this study suggest that NOM interacts with arsenic in ways that promote arsenic mobility and especially promote the mobility of arsenate relative to arsenite, which is of great significance for evaluating the migration and bioavailability of arsenic in both natural and contaminated environments.

2020年10月17日 · First, the arsenic was mostly present as arsenite (As (III)) rather than arsenate (As (V)); second, other constituents in the water, including bicarbonate (HCO 3−), argued for a quite different mechanism; third, the arsenic concentrations peaked at depths well below where oxygen was present.

2024年6月18日 · Arsenite is neutral at typical drinking water pH, so its oxidation into arsenate is a prelude to effective removal. Various oxidants, such as MnO 2, KMnO 4, TiO 2, Ag nanoparticles, hypochlorite, zero-valent iron, ZnO nanoparticles, and CuO, are employed, generating reactive oxygen species (ROS) responsible for As (III) oxidation.