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.
Cornell scientists have engineered E. coli to act as a sensitive biosensor for monitoring environmental arsenic, a toxic pollutant most notably found in rice paddies in Southeast Asia. Their new study provides a proof of ...
Cell & Microbiology
Mar 23, 2026
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From 1948 to 1953, a gold mine called Giant Mine released about 5 tons of arsenic trioxide per day into the environment around Yellowknife, Northwest Territories, Canada. Emissions declined from the 1950s until the mine closed ...
Earth Sciences
Feb 9, 2026
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Twelve million people in Myanmar's Ayeyarwady Delta face serious long-term health risks from the harmful substance, arsenic, in their drinking water.
Earth Sciences
Nov 19, 2025
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A 20-year study of nearly 11,000 adults in Bangladesh found that lowering arsenic levels in drinking water was associated with up to a 50% lower risk of death from heart disease, cancer and other chronic illnesses, compared ...
Environment
Nov 17, 2025
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One of the most iconic ecosystems of the Peruvian plateau, the Junín Lake basin, suffers from "critical" levels of arsenic, lead and cadmium contamination, leading to health risks including cancer, according to new analysis.
Earth Sciences
Nov 3, 2025
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Soil contamination is a global environmental concern, with toxic metals and metalloids from industrial activities persisting as long-term pollutants. Arsenic (As), although naturally occurring, becomes widespread when mobilized ...
Ecology
Oct 6, 2025
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Decades of gold mining at Giant Mine in Yellowknife, Northwest Territories, has left a toxic legacy: 237,000 tons of arsenic trioxide dust stored in underground chambers.
Environment
Jul 23, 2025
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Earth's earliest life forms developed ways to survive the harmful effects of arsenic to cope with dramatic changes in their environment, a new study suggests.
Cell & Microbiology
Jul 1, 2025
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101
A research team led by Prof. Luan Fubo from the Research Center for Eco-Environmental Sciences of the Chinese Academy of Sciences, has uncovered a novel mechanism involving a ternary surface complex on titanium dioxide (TiO₂) ...
Nanomaterials
Mar 25, 2025
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163
Researchers at UCL have created one-atom-thick ribbons made of phosphorus alloyed with arsenic that could dramatically improve the efficiency of devices such as batteries, supercapacitors and solar cells.
Nanomaterials
Sep 21, 2023
0
129
