It is understood that lead-containing paints are mainly caused by lead compounds contained in paint pigments, such as Huang Dan, red lead and lead white. Because the paint surface can be kept bright for a long time, the brighter the paint surface, the more likely it is to contain a lot of lead. It is understood that in a test conducted by relevant institutions, among 23 lead-containing paint samples, orange paint has the highest lead content, followed by yellow, green and brown.
Experts say that once lead in paint enters the human body through the respiratory tract, digestive tract and skin, it will accumulate in the blood, causing toxic reactions such as anemia, memory loss, hypertension and joint pain. It is determined that nail-sized paint fragments contain 50 mg of lead.
Studies have found that infants are the main victims of lead pollution. According to the survey conducted by China Center for Disease Control and Prevention, at present, there are still13 children whose lead intake exceeds the standard, and the pollution of home decoration products is the most common source of lead pollution among children. The survey shows that the lead concentration in the air is 1 m away from the ground, which is 16 times higher than that at 1.5 m, and the height of children is just within this range. Infants and young children often touch the wall with their hands, have the habit of sucking their fingers, and are easy to ingest a lot of lead. In addition, the absorption rate of lead by infants is as high as 53%, which is about five times that of adults.
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