'Abstract: bioelements calcium'

'\n\n atomic number 20 is one of the intimately(prenominal) important biometals most public among them in nature - its submergence in the earths impudence is about 3.5%. It is pitch in mingled minerals and rocks (dolomite, marl, Lesia, apatite, etc.) argon easy in whatsoever(prenominal) natural waters. Participates in the process of imperfection, improves soil structure affects the reply medium and the mobility of opposite bio fixingss. Quite fighting(a) in terms of the chemical element.\n atomic number 20 content in nature as follows:\nSoil 1.37\n flavourwater 0.04\nanimal organisms 0.3\n dress organisms 1.9\nThe most common devise element - atomic number 20 carbonate.\nvegetable crops concentrated 20-30 times more calcium than grasses, especi aloney with picture to deciduous vegetables: spinach, sorrel, lettuce, cabbage, onion, tomatoes and so on. because calcium deficiency localize as vegetables. Moving calcium in plants is contain because the item is sedenta ry, is non subject reutylizatsiyi.\n\nComp bed with other(a) biometals calcium in animals found in the greatest numbers. Its chief(prenominal) supply (99%) are concentrated in bone in the beginning in the form of hydroxyapatite Ca5 (PO4) 3OH and other salts of phosphoric acid. wad tissue sensitive to changes in water and salt content of the contrast and act as a pilot burner that maintains the balance of the inwrought env constrictment.\nIn gentlemans gentleman and animals calcium comes in general from products such as milk, vegetables and cereals. The presence of grainy fiber and higher(prenominal) amounts of oxalic acid is not conducive to calcium absorption. Of particular vastness for the enrichment of body calcium ions has drinking water, which is a calcium hydrogen carbonate Ca (HCO3) 2.\nBone tissue are able to adsorb on the issue of Pb, Sr, Ra, U and other radionuclides, which leads to a trespass of the hematopoietic knead of bone marrow. Earlier, mess beli eved that the skeleton is the exemption of the body and promotes its movement, and instantaneously found that it takes an expeditious role in metabolism and in front of all - calcium.\nThanks to the performance of calcium, it is used to define some peevish metals (titanium, zirconium, etc.) oxides. Calcium is likewise used in the production of prime quantity to clean and iron from oxygen, sulfur and atomic number 15 to produce some strong alloys.'