Toxic heavy metal
Toxic heavy metals are a group of metals and metalloids that are harmful to humans and the environment. They include arsenic, lead, mercury, cadmium, and chromium. These metals are naturally occurring in the earth's crust but have been mobilized by human activities such as mining, industrial processes, and burning of fossil fuels. [[File:Kingston-plant-spill-swanpond-tn2.jpg|thumb|A 25-foot (7.6 m)
wall of coal fly ash contaminated with toxic heavy metals, resulting
Sources and exposure[edit | edit source]
Toxic heavy metals can be released into the environment through various sources. Industrial processes such as mining, smelting, and manufacturing can release these metals into the air, water, and soil. They can also be released through the burning of fossil fuels and waste materials.
Humans can be exposed to toxic heavy metals through ingestion, inhalation, and skin contact. The most common routes of exposure are through contaminated food, water, and air.
Health effects[edit | edit source]
Exposure to toxic heavy metals can have serious health effects. These metals can accumulate in the body over time, leading to a condition known as heavy metal poisoning. Symptoms of heavy metal poisoning can vary depending on the type of metal and the level of exposure, but they can include nausea, vomiting, abdominal pain, and neurological symptoms such as confusion, numbness, and tingling.
Long-term exposure to toxic heavy metals can lead to chronic health conditions such as kidney damage, bone disorders, and neurological conditions. Some toxic heavy metals, such as arsenic and chromium, are also known to be carcinogenic.
Prevention and treatment[edit | edit source]
Prevention of exposure to toxic heavy metals involves controlling their release into the environment and reducing human exposure. This can be achieved through regulations and standards for industrial processes, proper waste management, and public education about the risks of exposure.
Treatment for heavy metal poisoning typically involves the use of chelating agents, which bind to the metals in the body and help to remove them. In severe cases, hospitalization may be required.
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