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(Bgatov А.V., 1999)
Type | Group | Name | Note |
Biogenic | Prime-elements | Hydrogen, carbon, oxygen, nitrogen | Frame elements of organic molecules appearing as early as in Precambrian. Constituents of most amino acids. |
Phosphorous, sulfur | Essential participators of protein molecules, DNA and RNA. Formers of primary, before-cellular life | ||
Macroelements | Potassium, sodium, calcium, magnesium, chlorine, silicon. | Elements of buffer system of the first monocellular organisms and cellular potential. The first elements of skeleton of simple organisms | |
Essential microelements | Iron, copper, zinc, manganese, chromium, selenium, molybdenum, iodine, cobalt, fluorine. | Involved in metabolism with formation of blood system. Participate in reduction-oxidation reactions. Constituents of co-enzymes | |
Conditionally essential microelements | Arsenic, bromine, lithium, nickel, vanadium, cadmium, lead. | Narrow-specialized group of elements "working" in not all species. Some of them form co-enzymes | |
Brain-elements | Gold, tin, thallium, tellurium, germanium, gallium | Presumably, participate in impulse conductivity of mammals’ brain. Evidently, involved in metabolism in the Quaternary Period | |
Абиогенные | Neutral | Aluminum, titanium, rubidium | Did not occupy any place in metabolism of animals due to weak reaction capacity despite their wide abundance in the lithosphere |
Competitors | Barium, strontium, cesium | Participated in metabolism of marine organisms that determined their further competition in metabolism of land species (resulting in pathology) | |
Aggressive | Mercury, beryllium, osmium, bismuth | Elements of later volcanic activity. Since they did not participate in organism metabolism they are harmful in low doses |
In our opinion to classify the elements in living matter (LM) one can use the approaches applied in crystal chemistry (Rikhvanov L.P., Baranovskaya N.V., Ignatova T.N., 2006). Hence, all known elements in LM can be divided depending on their role in formation of stereochemical structures of organic and inorganic compounds into the following basic groups (Fig. 5):
H | He | ||||||||||||||||
Li | Be | B | С | N | O | F | Ne | ||||||||||
Na | Mg | Al | Si | P | S | Cl | Ar | ||||||||||
K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Сu | Zn | Ga | Ge | As | Se | Br | Kr |
Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd - | Ag | Cd | In | Sn | Sb | Te | I | Xe |
Cs | Ba | * | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | Tl | Pb | Bi | Po | At | Rn |
Fr | Ra | * * | Ku - | Ns |
Ac | Th | Pa | U | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |
La | Ce | Pr | Nd | Pm | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu |
main structure-forming (constituting) chemical elements
accompanying structure-forming chemical elements
non-structure-forming chemical elements
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Content of some elements in plants, animal and human organisms, mg/kg | | | Fig. 5 Classification of elements depending on their role in structure formtion of organic and inorganic compounds |