Analysis of domestic and international status and trends of scientific research
Abstract: At present, the drinking of contaminated water sources have become a serious, slightly polluted water in the inorganic, organic matter and microorganisms a serious threat to human health. At the same time, people are more concerned about drinking water, bottled water is a popular market. As people's living standards, growing health awareness, water quality scientific research will continue to experience a variety of new problems, which made for the water treatment workers, more research topics. Drinking water quality scientific research and foreign status and development trend, we believe that should continue to strengthen drinking water quality scientific research, particularly on the health safety of drinking water and water research to keep abreast of developments.
Key words: drinking water quality drinking water to safe drinking water health
1, content 1. Macro research (1) on the drinking water contained trace inorganic ions
Present some elements of drinking water quality standards, only the maximum limit has not provided the minimum limit, then the ideal drinking water should contain a certain amount of ions do? Medical experts believe that trace elements in water, such as calcium, magnesium, iron, iodine, etc. are essential nutrients that people do not advocate drinking pure water, distilled water. The business of some companies promote these trace element in water is negligible, nutrition can be obtained from food.
People do get most nutrients come from food, even if the trace elements necessary for the human body, people's nutritional intake through drinking water is also only the body's nutritional intake a small part of the total (see Table 1 ). The problem is that we can assure that the food structure should be useful elements and nutrition? These beneficial elements in food and nutrition is easily absorbed body? The trace elements in water in addition to complement the role of the human body other than the required salt, if there are other role?
Endemic in the past, often in areas with poor communications. People in these areas year round drink local water, eating local food because the same area of water and food, there may also lack one or some of the beneficial elements, or both contain one or some of the harmful elements, and are therefore pathogenic. Now traffic is developed, the circulation of goods, food, drink mixed origin, with no element different. If our food structure, monotonous, does not guarantee access to due with the nutritious elements, then drink tons of water, distilled water will cause the lack of beneficial elements not added, causing adverse reactions (especially for being of a growing child).
The same time we must also note that the trace elements in water in addition to the nutrients required outside of the body, may have other effects. In other words, even if we can guarantee our food structure elements deserves and nutrition, drinking with some mineral content of water may also be more beneficial to our health.
Overseas research showed that water hardness and to determine the relationship between heart disease mortality: soft water areas than in hard water areas of cardiovascular disease mortality high. This relationship has also been confirmed by Chinese scholars.
SorensonJ Dr. (medical chemist, mineral metabolism doctrinal authority) that minerals in drinking water can be absorbed well. He found that the main metal element metabolism and the proportion of non-essential elements of most major elements in water by the amount of influence, the key elements needed to be met, seldom or non-essential elements will not be absorbed, but is excreted. That is, if the water calcium and magnesium content is low, the cells may choose to lead, resulting in injury.
The United States Martin? Fuke Si 1996, Dr. "Healthy Water," a book that combines research abroad in recent years that: For drinking water, the hardness of the ideal target of 170mg / l or so; good indicator of total dissolved solids 300mg / L.
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