Quality -> Chemical composition -> Micro components -> Zinc

General characteristics

Zinc belongs IIb group of Periodic table of the elements and in transition metals. It is using in galvanization, for paints preparation, rubber production, production of cosmetics, medicines, floor counterpane, plastics, soaps, battery, textile, electric equipments and other products.

Small soluble in water is characteristic for carbonates, oxides and sulphides, and because of that zinc concentration in natural waters is low, but industrial pollution especially in zinc ores can cause large concentration which can go to 50 g/l. In underground waters zinc content grows with higher mineralization. Clayey rocks are rich with zinc, but in sandy sediments there are smaller quantities of this element.

Medical aspect

Positive effect

Zinc is necessary for mobilization of vitamin a from liver. It entrance in insulin contents and is necessary for insulin reserves making. Zinc assists in making of collagen, glicose and oxidizes phosphoralisation. It is important in metabolism of proteins, carbon hydrates and phosphor. It is necessary for growth. Zinc plays important part in process of gas exchange in lungs. It leads with muscle contraction. It is important for blood stability (keep certain concentration of vitamin E in blood) and keep acid-base balance in organism. Zinc has normal influence on prostate and it is important for development of all reproductive organs. Some studies signify on zinc importance on brain function and in cure of schizophrenia. There are evidences that zinc is necessary for DNK synthesis. Reduce time healing of external and internal cuts. It removes white moles from nails. It helps in sense of taste loss. It also uses in cure of sterility. Zinc helps in wane of cholesterol. Zinc allays catarrh.

Negative effect

Big quantities of zinc in organism can produce gastrointestinal chafes, bad immune function and copper deficiency. Dose from 1.000 or more mg can produce toxic effects. High concentrations of zinc (5-30 mg/l) are esteticly unwelcome in drinking water because of the milky and tie film during the boiling. Harsh taste can occur with concentration higher then 20-30 mg/l.

Maximal allowable concentrations 

According to recommendations of EU (Directive 98/83/EC) there are not limitary value for zinc. According to our rules for drinking water (Sl. list SRJ 42/98), limitary value for zinc is 3 mg/1.


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