What are some simple words about the harm of old batteries to human beings?

The battery contains various metallic substances, such as mercury, manganese, cadmium, lead and zinc. After the battery is discarded, the shell of the battery will slowly corrode, and the heavy metal substances in it will gradually penetrate into the water and soil, causing pollution.

Manganese: excessive accumulation of manganese in the body causes neurological dysfunction, which is manifested as comprehensive sexual dysfunction in the early stage. The heavier ones have heavy legs, monotonous language, dull expression and indifference, often accompanied by mental symptoms.

Zinc: Zinc salt can precipitate protein, which is irritating to skin and mucous membrane. When the concentration in water exceeds 10-50 ms/L, it is carcinogenic and may cause chemical pneumonia.

Lead: Lead mainly acts on nervous system, blood circulation system, digestive system, liver, kidney and other organs, which can inhibit the anabolic process of hemoglobin, and can also directly act on mature red blood cells, which has a great impact on infants and young children, leading to physical retardation of children, and chronic lead poisoning can lead to mental retardation of children. Nickel powder is soluble in blood, participates in internal circulation, and has strong toxicity, which can damage the central nervous system, cause vascular variation, and even lead to cancer in severe cases.

Mercury: Among these heavy metal pollutants, it is the most worth mentioning. This heavy metal is very harmful to human beings. For a long time, when producing dry batteries in China, it is necessary to add a toxic substance, namely mercury or mercury compounds. In China, the mercury content of alkaline dry batteries reaches 1-5%, and that of neutral dry batteries is 0.025%. Mercury used to produce dry batteries in China is obvious every year. In addition, it also has adverse effects on endocrine system and immune system. 1953, the Minamata disease that shocked the world occurred in Kyushu Island, Japan, which sounded the alarm of mercury pollution to mankind.