工程翻译

Nickel almost no acute toxicity, the general toxicity of nickel salts also lower, but managed to produce nickel carbonyl highly toxic.Nickel carbonyl vapor form to quickly move from the respiratory tract absorption, but also a small amount of absorption from the skin, which is the operating environment poison the main way into the human body. Nickel carbonyl concentration 3.5μg/m3 feel like when light smoke odor, low concentration of people feeling unwell. Absorption of nickel carbonyl can cause acute poisoning, about 10 minutes there will be early symptoms, such as: dizziness, headache, gait instability, and sometimes nausea, vomiting, chest tightness; latter symptom is in contact with 12-36 hours after nausea, vomiting, high fever, difficulty in breathing, chest pain. When exposure to high concentrations of acute chemical pneumonia, will eventually become a cycle of pulmonary edema and respiratory failure due to exposure to lethal dose of death, the accident occurred after 4-11 di