According to the types, physical and chemical characteristics, contact concentration, contact time and individual differences of exposed coatings, the poisoning phenomena are mainly divided into lightning poisoning (high concentration and large dose), acute poisoning (large amount, several minutes to several hours), subacute poisoning (high concentration, 1 month) and chronic poisoning (long-term low dose, 1 month to several years). Poisoning is characterized by multi-system and multi-organ damage. Central (peripheral) nervous system: dizziness, headache, unconsciousness, coma, numbness of limbs, spasm, paralysis and so on. Respiratory tract: cough, shortness of breath, dyspnea, bronchial asthma, pneumonia, etc. Gastrointestinal tract: nausea, vomiting, abdominal pain, diarrhea, etc. Liver: toxic liver injury, liver necrosis, etc. Cardiovascular: blood pressure rising or falling, tachycardia or bradycardia, arrhythmia, atrial fibrillation or ventricular fibrillation, sudden cardiac death, etc. Blood system: the contents of lead, arsenic, mercury and manganese in blood increase, the white blood cell count decreases, megaloblastic cells increase, aplastic anemia, acute myeloid leukemia, etc. Urinary system: increased urinary protein content, hematuria, acute glomerulonephritis, etc. Skin mucosa: contact with irritating dermatitis, allergic dermatitis, allergic skin injury, conjunctival congestion, edema, etc. Reproductive/developmental system: the number of sperm in male patients decreased, sperm motility and survival rate decreased, sperm abnormalities, testicular and epididymal cell degeneration and necrosis, menorrhagia or reduction in female patients, dysmenorrhea; Sexual dysfunction; It will also affect future generations, such as fetal absorption, fetal malformation, developmental retardation and so on.
Impact on residents' health It is reported that there are more than 400 acute poisoning incidents caused by toxic building coatings every year, with more than 15000, about 350 deaths and chronic poisoning 100000. Sampling survey shows that about 47% of architectural coatings in the market cause skin damage, 70% cause eye irritation, 15% cause mutation, 15% cause skin allergy and 8% cause liver injury. As for the degree and duration of potential toxicity of some architectural coatings, it is even more difficult to estimate. There are about 60 kinds of chemicals (such as benzene, polychlorinated biphenyls, ethylene oxide, vinyl chloride, arsenic, chromium, etc. ) internationally, it has been determined that it is carcinogenic to human beings. In addition, there are substances harmful to human reproduction/development. For example, in recent years, the survey of residents decorated with architectural coatings found that the number of sperm in the male population decreased significantly, the sperm survival rate and activity rate decreased significantly, and the sperm deformity rate increased significantly. Through analysis, it is found that it contains substances (monomethyl ether, monoethyl ether, etc. ) has been listed as having reproductive/developmental toxicity abroad. According to the sampling survey and analysis of decorative coatings, about 20% of architectural coatings contain carcinogens, reproductive/developmental poisons, mutagens and allergens to varying degrees, most of which are imported coatings. This will not only affect the quality of life of direct contacts, but also affect the quality of life of the next generation, even the next generation born.