Many people are not very familiar with the substance called arsenic, or even don't know it exists at all. In fact, this substance is widely distributed, especially in plants and animals, which are very rich in arsenic. However, this substance is very harmful to our human body and can even cause us to be poisoned. Therefore, the harm is relatively large and may lead to some diseases. Arsenic is widely distributed in nature. Animal tissues, plants, and seafood all contain trace amounts of arsenic. Due to the widespread use of arsenic-containing pesticides, arsenic pollution of the environment has become increasingly serious. For example, if arsenic compounds are used as feed additives and added excessively to livestock feed, arsenic can easily accumulate in the livestock's bodies, and eating meat products from such livestock can easily cause poisoning. After arsenic enters the human body, in addition to being excreted through urine, digestive tract, saliva, and mammary glands, it accumulates in osteoporotic areas, liver, kidneys, spleen, muscles, hair, nails and other parts. Arsenic acts on the nervous system and stimulates the hematopoietic organs. Long-term invasion of small amounts into the human body can stimulate the production of red blood cells. Long-term exposure to arsenic can cause cell poisoning and capillary poisoning, and may also induce malignant tumors. my country's national standard for the limit of heavy metal residues in food stipulates that the maximum arsenic content (in grain) is 0.7 mg/kg, and in fresh milk it is 0.2 mg/kg. The national standard limit for drinking water is 0.01 mg/L. Arsenic is not an essential element for the human body, but it becomes a constituent element of humans and animals because it is contained in the environment. Under normal circumstances, the total amount of arsenic a person ingests from food, water, and air every day is about 100 μg, and the total amount excreted from feces, urine, sweat glands, and milk is also about 100 μg. Therefore, it will not cause poisoning. However, when the body's intake exceeds the excretion, it can cause varying degrees of harm. Moreover, this substance is not a necessary element in the human body, so you can only take in a little bit of it every day so that it can be excreted from your urethra. Otherwise, it will cause a certain stimulation to your hematopoietic organs and cause some blood diseases. However, this substance will not easily cause people to be poisoned. |
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