Manganese is not an element needed by the human body, and it can be harmful to the human body after being ingested into the human body, and the main harm is to the human body's brain and nerve center system.

1, manganese content is too high will reduce the corrosion resistance of stainless steel, excessive manganese is also harmful to the human body. Manganese is a metal element essential to the human body, the amount of daily dietary intake can basically meet the body's needs. If a person consumes too much manganese metal for a long time, it will increase the risk of manganese poisoning.

2, experts, manganese poisoning will affect the human brain, so that people show neurasthenia syndrome, vegetative nervous system dysfunction and other problems, the country has not been clear stainless steel in the amount of manganese precipitation of the limit value of the standard, but the manganese content of stainless steel cooking utensils, which will lead to a higher amount of manganese precipitation. When choosing food contact stainless steel products, you should try to choose products with low manganese content.

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Manganese contamination of soils. p>Manganese Pollution of Soil

Soil contains manganese at levels ranging from 20 to 10,000 ppm, with an average value of 1,000 ppm. during the weathering of rocks into soil, manganese is neither lost through soil leaching nor enriched in large quantities. For example, when basalt is converted to soil, the manganese content changes from 1200 to 1300 milligrams per kilogram of rock.

For moderately contaminated and cultivated soils, the amount of manganese input from rock weathering remains the same, the input from precipitation and dustfall increases to 20 mg, the input from fertilizers is 5 mg, and the manganese transported from the soil to the crop is 5 to 60 mg. It can be seen that in addition to the natural cycle, the greatest influence on the soil manganese content is manganese from the atmosphere.

Baidu Encyclopedia - Manganese

People's Daily Online - Alert: Some electric kettles and soymilk machines contain too much manganese or lead to neurasthenia