What harm does carbon black have to human body?

summary

Carbon black is a black or white powder of amorphous carbon. Carbon black is composed of spherical or chain like particles with an average diameter of 2 ~ 3nm. It contains micro crystalline structure with a diameter of 3 ~ 500nm, and can react with various free radicals. The specific gravity of carbon black is 1.8 ~ 1.9, the bulk specific gravity of granular carbon black is 0.35 ~ 0.4, and the bulk specific gravity of powdered carbon black is 0.04 ~ 0.08. Carbon black can be obtained by carbonization of hydrocarbon in several milliseconds at high temperature above 800 ℃. Carbon black was obtained by partial combustion of natural gas and petroleum fraction in furnace. What harm does carbon black have to human body?

What harm does carbon black have to human body?

If the human body inhales carbon black for a long time, fibrosis will occur in the lung tissue, gradually hardening the lung tissue and losing the normal respiratory function, resulting in pneumoconiosis of carbon black (a kind of statutory occupational disease). The particle size of carbon black dust is 0.5 ~ 5?? It is harmful to human body and irritates skin when it pollutes the whole body seriously.

Carbon black pneumoconiosis: pneumoconiosis caused by long-term inhalation of carbon black dust. Carbon black is mainly carbon powder which is easy to fly. Although the production has been closed and automated, the phenomenon of dust flying still exists. Therefore, the workers who produce and use carbon black are likely to have carbon black pneumoconiosis. The minimum length of service is 15 years and the longest can be more than 25 years. The clinical symptoms are mild and the progress is slow, which generally does not affect the labor ability. The main pathological changes were that the two lungs were obviously black, and there were isolated or clusters of small black nodules around the bronchioles and small blood vessels in the whole lung; Around the nodules were focal emphysema, pleural thickening and adhesion.

China has listed carbon black pneumoconiosis as an occupational disease. I think: the degree of carbon black harm to human body, and time has a great relationship. The short-term harm to human body is limited and can be recovered to some extent (but the inhaled particulate dust is difficult to be discharged from the body); In the long run, it will do great harm to human body, and it is irrecoverable. A large amount of inhalation of carbon black dust will at least cause carbon black pneumoconiosis (one of the occupational diseases). Pneumoconiosis in China includes: silicosis, coal worker's pneumoconiosis, graphite pneumoconiosis, carbon black pneumoconiosis, asbestosis, talc pneumoconiosis, cement pneumoconiosis, mica pneumoconiosis, pottery pneumoconiosis, aluminum pneumoconiosis, welder's pneumoconiosis, foundry worker's pneumoconiosis, etc!

matters needing attention

At present, there is a lack of treatment for pneumoconiosis all over the world. Pneumoconiosis is equivalent to death penalty. The number of pneumoconiosis patients in China is equal to the sum of pneumoconiosis patients in other parts of the world. If a person loses his health, it's meaningless to have a child. Please pay more attention and don't inhale too much.