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deposited in the liver. The liver is like a huge "chemical factory", food, water, etc. will be digested and absorbed into the bloodstream, and then transported from the blood to the liver for further catabolism. If an animal drinks unclean water, or overdoses on a drug, heavy metals, or other contaminants, it is deposited in the liver.
Pollution hazards of heavy metal elements:1. Especially the damage to the cells, organs, bones, and nerves of the digestive system and urinary system is extremely serious. It is difficult to metabolize heavy metals, and once they are precipitated in the body, they will bring a lot of harm to the body.
2. Heavy metals are widely present in nature in natural concentrations, but due to the increasing mining, smelting, processing and commercial manufacturing activities of heavy metals, many heavy metals such as lead, mercury, cadmium, cobalt, etc. have entered the atmosphere, water and soil, causing serious environmental pollution.
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Different species of marine organisms have different physiological characteristics, and their enrichment and transformation effects on heavy metals are also different. For example, fish, shrimp, shellfish and crabs are enriched with different kinds of heavy metals, and the organs and parts of the enrichment are also different. Correspondingly, people eat different parts of them, and the harm that may be caused is also inconsistent.
Relatively speaking, muscles contain less heavy metals, and the internal organs, gonads, epidermis, intestines, and gills have higher metal content, and these organs are prone to residual heavy metals.
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Heavy metals that are ingested into the body, such as lead, are mainly distributed in the liver, kidneys, brain, ** and skeletal muscles in the early days.
After a few weeks, heavy metals are transferred from soft tissues to bones and deposited in the form of insoluble phosphates, which are long-term and irreversible.
Heavy metal elements refer to metal elements with a single mass density greater than 4500kg cubic meters under standard conditions, which are different from light metal elements (such as aluminum and magnesium).
It mainly refers to toxic elements such as mercury, cadmium, lead, chromium and arsenic-like metals, which can be mined from mineral deposits, exposing minerals containing heavy metal elements from deep underground to the surface, or emitting them into soil, atmosphere or water through industrial processes. However, the degree of harm of pollution is very significant, and it is manifested in obvious toxic effects on living organisms.
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Shrimp is a popular seafood among consumers, but in recent years, due to environmental problems, shrimp contains a large number of heavy metals, among which cadmium, lead, mercury, chromium and other common ones are the most common. These heavy metals are most likely to appear in shrimp heads, and the food safety of shrimp heads has attracted much attention.
First of all, the shrimp head is rich in protein and nutrients, which is very delicious, which also makes many consumers mistakenly think that the shrimp head is more delicious than the shrimp body. However, the head of shrimp is rich in fishy and muddy toxins, and also contains high heavy metal content, which will bring potential risks to human health after long-term consumption in large quantities.
Secondly, heavy metals are very harmful to human health. After being absorbed and accumulated in shrimp and other organisms, a large number of heavy metals will accumulate in the human body, causing harm to the liver, kidneys, nervous system, etc., and then causing cognitive impairment, organ damage, cytotoxic high wax and other diseases. What's more, the harm of heavy metals to human health is irreversible and extremely serious.
Therefore, when choosing shrimp, consumers should try to choose stocked shrimp and reduce the consumption of shrimp heads, and infants and pregnant women should pay more attention. At the same time, attention should be paid to grasping the consumption of shrimp and paying attention to the balance of nutritional intake to ensure food safety and health.
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d internal organs, mainly the liver, the liver has the function of detoxification, and most of the toxic elements accumulate in the liver of animals.
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The black membrane of the abdominal wall of the fish has the largest content of heavy metals, so the black membrane must be scraped off when cutting the fish, and the head of the shrimp should be removed.
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Heavy metal elements are more tolerant of hand burial and easy to accumulate in which parts of fish and shrimp.
Heavy metals that are ingested into the body, such as lead, are mainly distributed in the liver, kidneys, brain, ** and skeletal muscles in the early days. After a few weeks, heavy metals are transferred from soft tissues to bones and deposited in the form of insoluble phosphates, which are long-term and irreversible.
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The genus Heavy Leopard that is ingested into the body, such as lead, is mainly distributed in the liver, the kidney, the brain, ** and skeletal muscle in the early stage; After a few weeks, heavy metals are transferred from soft tissues to bones and deposited in the form of insoluble phosphates, which are long-term and irreversible.
It is to establish a spatial Cartesian coordinate system and then represent it one by one.
Pantera Heavy Metal: I think this is the most feeling.
I think it's a welder or something.
Metals with a density of more than 5 are collectively called heavy metals, such as gold, silver, copper, lead, zinc, nickel, cobalt, cadmium, chromium and mercury and other 45 kinds. In terms of environmental pollution, heavy metals mainly refer to heavy metals with significant biological toxicity such as mercury, cadmium, lead, chromium and arsenic, as well as general heavy metals with certain toxicity such as zinc, copper, cobalt, nickel, tin, etc. At present, mercury, cadmium, chromium, etc., which have attracted the most attention. >>>More
Alkali metals refer to all the metal elements in the A group of elements in the periodic table, at present, there are six kinds of lithium (Li), sodium (Na), potassium (K), rubidium (RB), cesium (CS), and francium (FR), the first five exist in nature, francium can only be produced by nuclear reactions, and does not exist in nature. Alkali metal is a very metallic element, its elemental substance is also a typical metal, showing strong electrical and thermal conductivity, potassium and sodium alloy is used as a thermal conductive agent for nuclear reactors, the elemental element of alkali metal is too high because of high reactivity, can not be preserved in the natural state, the existence of alkali metal salts in nature, potassium, sodium is a macro element in the ocean, and also plays an important role in living organisms; The rest are light and rare metal elements, which are very rare in the earth's crust. >>>More