What are the symptoms of zinc poisoning?
summary
Zinc is an essential trace element for human body. It is of great significance to ensure the nutrient supply of zinc for promoting human growth and maintaining health. The content of zinc in normal human body is 2-2.5g. But excessive intake of zinc can also lead to poisoning. The distance between the zinc supply and the poisoning dose is very close, that is, the safety belt is very narrow. For example, the zinc supply for people is 10-20 mg / day, while the poisoning dose is 80-400 mg. What are the symptoms of zinc poisoning? Let's talk about it.
What are the symptoms of zinc poisoning?
1. Foundry heat: the latent period is short, generally 1-8 hours after inhalation, sudden severe shivering, lasting for 1-2 hours, the high fever reaches 38-40 ℃, accompanied by headache, dizziness, fatigue, sweating, muscle and joint acid carbuncle, tinnitus, etc., similar to the attack of "malaria". At the same time, there are respiratory symptoms, but also digestive tract dysfunction, severe nervous system symptoms such as spasm, delusion and fuzzy consciousness. Physical examination can find pulse speed, throat congestion, two lungs in Duo Yin, breathing sound rough, etc; Repeated hair author, can have hepatomegaly, tenderness, transaminase rise, anemia. Generally, fever lasts for 6-7 hours, and symptoms subside within 24-48 hours;
2. Respiratory symptoms: after inhalation of zinc oxide dust, there may be dry throat and burning sensation, hoarseness or even aphasia, metal smell in the mouth, chest carbuncle, etc. Mild cases gradually recover after 2-3 days, severe cases may be complicated with bronchitis, pneumonia and pulmonary edema, and appear dyspnea, hypoxia and other complications. Long term inhalation of zinc stearate dust can cause pneumoconiosis and cough, expectoration, shortness of breath, hemoptysis, chest carbuncle, etc.
3. There may be oral mucosa and digestive tract erosion, mouth, throat and abdominal pain, lip and glottis swelling, and thirst, nausea, vomiting, diarrhea, etc; Vomit for purple blue, stool with blood, and even complicated with perforated peritonitis. Water and electrolyte disturbance may also occur. Severe cases may have rapid breathing, pulse speed, elevated blood pressure, pupil dilation, convulsions, coma and shock, and even death. Later or after temporary recovery, kidney damage, low back pain, proteinuria, hematuria and tubular urine appeared. Some patients may occasionally have pancreatitis and appear abdominal pain, nausea, vomiting, abdominal distension, fever, water, electrolyte and acid-base balance disorders, diabetes, ketonuria. Severe poisoning patients often have a series of symptoms and signs of stomach and esophagus stenosis after passing through the acute stage.
matters needing attention
1. Reform the process, such as flat and straight line welding can be used without light welding. The gas cutting shall be carried out in a ventilated environment, with local smoke exhaust equipment installed, and air supply mask or helmet worn. 2. Pay attention to personal hygiene, protect skin and prevent soluble zinc salt from polluting skin. 3. Dust collection and recovery equipment is equipped in zinc ore casting, burning and refining process to prevent dust and harmful gas from escaping.
