Metüülmercury

Metüülmercury is an organometallic compound with the chemical formula CH3Hg. It is a highly toxic substance that occurs naturally in the environment but is also produced through industrial processes. Methylmercury is formed when inorganic mercury, released from natural sources like volcanoes or from human activities such as burning fossil fuels and mining, is converted by microorganisms in aquatic environments. This organic form of mercury is particularly dangerous because it can easily pass into living organisms and accumulate in their tissues, a process known as bioaccumulation.

The primary concern with methylmercury is its neurotoxicity. When humans or animals consume contaminated fish or seafood, methylmercury can be absorbed into the body and readily cross the blood-brain barrier. In developing fetuses and young children, exposure can lead to severe developmental problems affecting the brain and nervous system, including cognitive deficits, motor skill impairment, and sensory issues. Adults can experience neurological symptoms such as tremors, memory loss, and vision problems.

Due to its persistence and toxicity, methylmercury is a significant global environmental and public health concern. Regulatory agencies worldwide monitor mercury levels in fish and issue advisories to limit consumption, especially for pregnant women, breastfeeding mothers, and young children. Efforts to reduce mercury emissions from industrial sources are crucial in mitigating the overall environmental burden of this hazardous compound.