1. nutritional composition for biological systems, such as people, animals, plants and microorganisms, which contains at least one contains a metal or mixed metal phosphate type (M1 M2 M3 ... Mx) (PO) and HO ·, where 0≤a ≤9, wherein (M1, M2, M3 ... MX) represent one metal of the metal containing one or more metals of the mixed metal phosphate, and they are selected from the group consisting of Na, K, Mg, Ca, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn and B, with the proviso that at least one of the metals in the phosphate is selected from the group consisting of Mn, Fe, Co and Ni, wherein the at least one osfat available or prepared putema) preparing an aqueous solution (I), which comprises at least one or more of the metals Mn, Fe, Co and / or Ni as divalent cations by introducing oxidic metal compounds (II), metal (III ) and / or metal (IV) or mixtures thereof, or compounds containing mixed oxidation states selected from the group consisting of hydroxides, oxides, oxyhydroxides, hydrates, oxides, carbonates, and hydroxycarbonates of at least one of the metals Mn, Fe, Co and / or Ni together with elementary shapes or spla s of at least one of the metals Mn, Fe, Co and / or Ni, in an aqueous medium containing phosphoric acid, and the reaction oxidic metal compounds with elemental or metal alloys (redox reaction) to form a divalent metal ion, b) separation of all the solids contained in the aqueous phosphoric acid solution (I), c) if the phosphate is a mixed phosphate metals and, in addition to metals, introduced into the solution in step a) contains other metals selected from the group consisting of (M1, M2, M3 ... Mi), additional olnitelnoe adding to the aqueous solution (I) at least one compound of at1. Питательная композиция для биологических систем, таких как люди, животные, растения и микроорганизмы, которая содержит по меньшей мере один содержащий один металл или смешанный фосфат металлов типа (M1 М2 М3 … Мx)3(РO4)2·а Н2О, где 0≤а≤9, где (M1, М2, М3 … Мx) обозначают од
