Paint is a kind of paint commonly used in home decoration and furniture manufacturing. Organic solvents such as benzene, formaldehyde, toluene, xylene, etc. are used as diluents. When these organic solvents evaporate, they will give off a pungent smell (that is, banana oil, Tianna Water, Diluent, etc.).
Organic solvents in paints are extremely harmful to human health. Among them, benzene has been recognized as a strong carcinogen by the World Health Organization, and the volatilization period is generally about 3 years. Formaldehyde is a highly toxic substance, ranking second in the priority control list of toxic chemicals in China, and its volatilization period is generally about 3- 15 years.
Harm of benzene: Inhalation of high concentration of benzene in a short time can cause acute benzene poisoning in the central nervous system. Mild poisoning can cause drowsiness, headache, dizziness, nausea, vomiting and chest tightness. Severe poisoning can cause blurred vision, tremor, shallow breathing, arrhythmia, convulsion and coma; A few severe cases will die of respiratory and circulatory failure, and people who have been exposed to the mixture for a long time have a higher incidence of aplastic anemia, which can cause leukemia.
Harm of formaldehyde: formaldehyde has been identified as a carcinogen and teratogenic substance by the World Health Organization, and it is recognized as an allergic reaction source and one of the potential strong mutagens. According to a large number of documents, the effects of formaldehyde on human health are mainly manifested in abnormal smell, irritation, allergy, abnormal lung function, abnormal liver function and abnormal immune function. When the concentration is high, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema; When it reaches 30mg/m3, it will kill people immediately. Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, nasopharyngeal carcinoma, colon cancer, brain tumor, menstrual disorder, gene mutation in the nucleus, DNA single-strand cross-linking and DNA-protein cross-linking, inhibition of DNA damage repair, pregnancy syndrome, chromosomal abnormalities in newborns, leukemia, and memory and intelligence decline in adolescents. Among all the contacts, children and pregnant women are particularly sensitive to formaldehyde, which is more harmful.
Free TDI, long-term inhalation damages the liver and even causes liver cancer; When the content of free formaldehyde in the air exceeds 0. 1.5 mg/m3, chronic respiratory diseases will be formed in this environment for a long time, and lung function will decline.
In addition, oily paint also contains heavy metals such as lead, chromium, cadmium and mercury, which can enter the human body through respiratory tract, skin and other channels, and then invade the nervous system, hematopoietic system and liver organs of the human body, leading to neurological disorders, mental retardation of children, ADHD and other diseases. The continuous release and volatilization of harmful substances can last for more than 10 years, causing indoor air pollution.