Questions about the indicators of heavy metals in water
There are many types of heavy metals, and of course the same is true for heavy metals in water. In this chapter, let us understand the indicators of some heavy metals in water! [Iron] When it comes to iron, it is an indispensable trace metal element for the human body and the main component of hemoglobin. There are about 3-5g of iron in human tissue. You can drink 6-12mg of iron through food and water every day, so as to meet the needs of normal physiological activities. Therefore, a small amount of iron in water is not only not harmful but beneficial to the human body. But if the iron content in the water is too high, it will be harmful to the human body! According to research by relevant departments, when the iron content exceeds 0.5mg/l, the sensory properties of drinking water will deteriorate, and a special rusty taste will occur. If it reaches 1mg/l, there will be obvious metallic taste and rust color. my country has stipulated that the iron content in drinking water shall not exceed 0.3mg/l. [Manganese] Manganese and the iron mentioned above coexist in natural water, and manganese is not easy to oxidize in water, so it is difficult to deal with in the purification process. Oxidation of manganese can accumulate on the inner wall of the pipe network. When the water pressure fluctuates, it will be washed down to a certain extent, which will cause“Black water” phenomenon. Oxidation of manganese is highly toxic and can cause fatty lesions in the liver and congestion of internal organs. my country's health standards stipulate that the manganese content in water should not exceed 0.1mg/L. [Copper] Copper, like iron, is an indispensable but not too much trace metal element for the human body. If the copper in the water has exceeded 1.5mg/l, it will cause metallic odor in the drinking water, but no matter how high the copper is, until it reaches 100mg per day, it is likely to cause nausea, abdominal discomfort, etc., and in severe cases, it may cause liver disease. lesion. [Zinc] Zinc is also an indispensable element for the human body, but his colleagues are also an indicator that affects the sensory quality of water. When the zinc content in water reaches 10mg/l, the water quality will be turbid, and when it exceeds 5mg/l, it will appear Special metallic taste. According to the sensory index requirements of water, the zinc content in water in our country shall not exceed 0.1mg/l. In addition, we can monitor the indicators in the water in real time through the online heavy metal analyzer in water. Of course, the monitoring instruments for different parameters will also be different.