Arsenic is a metalloid element (atomic number 33) that exhibits multiple oxidation states, primarily −3, +3, and +5, enabling diverse inorganic and organoarsenic compounds with distinct reactivities and toxicological profiles. In environmental and toxicological research, arsenic is studied as a ubiquitous contaminant in water, soil, and air, with inorganic arsenite (As(III)) and arsenate (As(V)) being the most biologically relevant species. Its speciation is governed by redox potential, pH, and microbial activity, influencing mobility, bioavailability, and biotransformation. Arsenic is a focus of research on carcinogenesis, epigenetic alterations, endocrine disruption, and risk assessment, as well as on remediation technologies such as adsorption, coagulation, membrane filtration, and bioremediation.
A team of researchers from Imperial College London led by Prof. Dominik Weiss has been working with Diamond Light Source, the UK's national synchrotron on a new material (TiO2/Fe2O3 nanomaterial) combining photocatalytic ...
Nanophysics
Nov 25, 2022
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132
Why are gold deposits found at all? Gold is famously unreactive, and there seems to be little reason why gold should be concentrated, rather than uniformly scattered throughout the Earth's crust. Now, an international group ...
Nanomaterials
Jul 5, 2021
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636
