What are the main hazards of heavy metals polluted by heavy metals to humans?
In terms of environmental pollution, heavy metals refer to heavy metals such as mercury, cadmium, lead, and metals such as arsenic. There are 5 kinds of poison to human body: lead, mercury, arsenic and cadmium. These heavy metals can not be decomposed in water. After drinking, they are amplified by toxicity and combined with other toxins in water to produce more toxic organic compounds.
Soil pollution can be used for phytoremediation of heavy metals and can be used for amusement parks. Nonagricultural arable land, heavy metals generally exist naturally in nature, but heavy metals such as lead, mercury, cadmium and cobalt enter the atmosphere, water and soil because of heavy metal mining, smelting, processing and commercial manufacturing activities. Heavy environmental pollution.
Heavy metals existing in various chemical or chemical forms will remain, accumulate and migrate after entering the environment or ecosystem. For example, heavy metals discharged from wastewater, even with low concentration, can be accumulated in algae and sediment, adsorbed on the surface of fish and shells, resulting in the concentration of food chain, resulting in pollution. For example, in Japan, there is mercury in the wastewater from the caustic soda manufacturing industry, which is contained in the mercury medical education network, which is caused by the bioactivity of organic mercury. It is also caused by cadmium emitted by the zinc smelting industry and the cadmium plating industry. The emission of automobile exhaust has entered the environment through the process of atmospheric diffusion. The concentration of lead in the surface has increased significantly, resulting in an increase of 100 times of lead absorption in the modern human body, which has damaged human health. Heavy metals do great harm to the human body.
Mercury: directly into the liver after ingestion, damaging the brain, nerves and eyesight. Natural water contains 0.01 milligrams per liter of water, which can lead to human poisoning.
Cadmium: lead to hypertension, cause cardiovascular and cerebrovascular diseases, destroy bones, liver and kidneys, and cause renal failure.
Lead: it is a kind of heavy metal pollution poisoning. Once it enters the human body, it will be difficult to exclude. Brain cells that directly injure human beings, especially the nervous system of the fetus, can cause congenital mental retardation.
Cobalt: it can cause radiation damage to the skin.
Vanadium: the heart and lungs that hurt people cause abnormal cholesterol metabolism.
Antimony: arsenic can make silver hand ornaments into brick red, and cause radiation damage to the skin.
Thallium: can cause multiple neuritis.
Manganese: hyperthyroidism can cause hyperthyroidism. It can also damage vital organs.
Arsenic: one of the components of arsenic, it is highly toxic and can cause death quickly. Chronic exposure to a small amount can lead to chronic poisoning. There is also carcinogenicity.
Any of these heavy metals can cause headaches, dizziness, medical education, insomnia, forgetfulness, insanity, joint pain, stones and cancer.
In recent years, heavy metal pollution incidents are common occurrences. From the Hunan children's blood lead exceeding standards, hundreds of children in Shaanxi Fengxiang exceeded lead to heavy metal pollution "vegetable basket" and so on. Recently, Southern Weekend reported that heavy metal pollution also exists in the drinking fountain. Heavy metal pollution has affected our living environment. Our common plastic doors and windows also exist heavy metal lead pollution. Plastic doors and windows belong to PVC profiles, and the heat stabilizer system for PVC profiles is mainly composed of lead salt, organotin, calcium zinc and their composite stabilizers. Because of the good stability of lead salt stabilizer, it has become the most used stabilizer in the production of plastic doors and windows in China. But because of the toxicity of lead, although it does not directly contact with human body, it still poses a threat to the environment and human health.