Benzene is a colorless and odorless gas. People will habitually call benzene series. In fact, benzene series contains benzene, toluene and xylene, which have been recognized as obvious carcinogens by the International Health Organization. Benzene is the main cause of childhood leukemia in recent years. According to the survey data, 90% children with leukemia in big cities have been transformed within one year!

First of all, when a person inhales high concentration benzene for a short time, it may have the effect of central nervous system anesthesia, including dizziness, headache, nausea and vomiting. When the reaction is big, people will faint. If they live in an environment with excessive benzene series, they will suffer from insomnia, depression and even forgetfulness. Benzene may also be harmful to the eyes, defatting the skin, causing inflammation and peeling. Inhalation of low-concentration benzene gas has slight harm to respiratory system, and causes some damage to human central nervous system, which will lead to the decline of limb posture coordination. High benzene concentration will lead to the decline of human resolution and working ability and slow thinking, so the harm of benzene series can not be ignored!

Secondly, benzene can be metabolized in human liver and spinal cord, which is an important place where blood cells and white blood cells are produced, that is, benzene series will cause side effects of hematopoietic system function after entering human body. Long-term exposure to benzene will affect spinal cord injury and heredity. Blood tests will reveal low white blood cells and platelets. Hypocytopenia can lead to anemia, even scurvy and leukemia. Septic virus can infect and inhale about 4000ppm benzene, which will cause irritation to mucosa and lungs in a short time, and the body will be accompanied by adverse reactions such as headache and vomiting.

Finally, after toluene enters the human body, about 48% of the dose will be metabolized in the body and eventually excreted through the liver, brain, lungs, kidneys and other human parts. In the whole process, it will cause damage to the central nervous system. Xylene can be digested and absorbed by respiratory system, skin and digestive system. Xylene enters the human body through the respiratory system, and some of it will be discharged through the respiratory system. Digested xylene will spread in the body, increasing the number of fat cells and adrenaline, followed by spinal cord and brain injury and night bleeding.