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(1) How heavy metals enter the human body
Heavy metals enter the human body mainly through the digestive tract, respiratory tract and contact with skin and mucous membranes
(2) In vivo metabolism of heavy metals
Heavy metals themselves do not decompose, and some can be enriched in organisms
(3) Types of heavy metal toxicity
The type and extent of heavy metal toxicity to the human body are related to its own toxicity characteristics, invasion route, exposure time, chemical state, body concentration, discharge rate and the synergistic effect between different heavy metals, which can cause acute poisoning and subcutaneous poisoning in various human systems and organs.
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Related link: The harm of heavy metals to livestock breeding