Harm of mercury in gold production by amalgamation

Our gold production practice shows that the amalgamation applies not only to mine gold production technology, and can produce good economic benefits. However, mercury is very harmful to human health and has been listed as one of the world's major public hazards. Mercury can be classified into organic mercury and inorganic mercury. Organic mercury (methylmercury and ethylmercury) is highly toxic and can cause pollution to air, water and soil. Sometimes, although the content of mercury is not high, some animals and plants can be absorbed in the body after being absorbed by animals and plants. Enrichment, when people eat these animals and plants, poisoning can occur. For example, in Japan, where water is contaminated with methylmercury, fish are absorbed and enriched, causing more than 100 people to fish poisoning and 42 people suffering from waterlogging deaths. Relatively silent inorganic mercury toxicity is small.
The use of amalgamation for gold production is mainly due to the toxicity of inorganic mercury. Mercury can enter the human body through the respiratory tract, esophagus and skin, and mercury can enter the body through the respiratory tract. When the concentration of mercury vapor is 1.2 ~ 8.5 mg / ^m3 , it can cause acute mercury poisoning, the symptoms are hepatitis, nephritis, proteinuria, hematuria and urinary poisoning; when the concentration of mercury is above 0.1 mg/ ^m3 , general contact Mild mercury poisoning may occur in 3 to 4 years. Symptoms include headache, dizziness, numbness of the limbs, weakness, heartbeat disorder, finger tremors, massive spit saliva, gum pain, etc.; when the mercury content is 0.1 mg/ ^m3 At the time of exposure, “mercury absorption” may occur after 4 months of exposure, and the urinary mercury content is 0.01 mg/L; when the mercury concentration is 0.014 to 0.017 mg/ ^m3 , the possibility of mild mercury poisoning may occur if inhaled for a long time. .

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