Description
The heavy metals mentioned in terms of environmental pollution mainly refer to metals or metals such as mercury, cadmium, lead, chromium, arsenic, and also general heavy metals with certain toxicity, such as copper, zinc, nickel, cobalt, and tin. Heavy metals such as lead, cadmium, mercury, and arsenic are due to the development of industrial activities, which cause enrichment in the human environment and enter the human body through the atmosphere, water, and food. Heavy metals accumulate in certain organs of the human body, causing chronic poisoning and endangering human health. The main factors determining the toxicity of pollutants are their physical properties, content, and form.