To remove arsenic from something, particularly from soil, water, or other materials.
Prefix 'de-' (meaning to remove) combined with 'arsenicate' (from 'arsenic', a toxic metallic element, with '-ate' creating a verb). Technical/scientific term.
After industrial pollution left arsenic in soil worldwide, scientists developed dearsenication techniques—using plants that absorb arsenic or chemical processes—showing how chemistry had to invent solutions for problems chemistry created.
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