Through what initial process does mercury, often from industrial emissions, convert into the dangerous form absorbed by fish?

Answer

Conversion into methylmercury in water bodies

The pathway for mercury contamination in fish begins in the environment, often stemming from industrial emissions. This elemental mercury must first undergo a chemical transformation within the water bodies themselves. The crucial step is the conversion of mercury into methylmercury. This organometallic compound is the form that fish are able to readily absorb from the surrounding water and the food chain, eventually leading to bioaccumulation within their tissues.

Through what initial process does mercury, often from industrial emissions, convert into the dangerous form absorbed by fish?
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