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Effect of environment on human

environment in which we live has a significant influence on the chemical composition of
the human body.
Man as a living organism is an integral part of the biosphere.

Over 98% of living matter are the elements
particularly busy in the conditions of the biosphere, they are: A, C, H and N,
forming gaseous compounds or a combination of readily soluble in water.
In the construction of living matter is also involved Ca, K, Na,
S, Mg, P, Cl, and others, but their role is subordinate.
source elements for living organisms are outside the sphere of the Earth.
composition of major elements and minor in the lithosphere, hydrosphere and atmosphere
is varied.
Aluminium, silicon and iron which is an essential component of the Earth's crust
in living organisms are the trace elements.


The share of chemical elements (minor and trace)
in the construction of organisms depends on many different factors,
closely related.

Living organisms occupying higher positions in the taxonomy of species
collect minerals from the surrounding environment more
selectively than lower-order organisms.


the biosphere biogenic migration of chemical elements combined elements of different types of migration
: mechanical, water, atmospheric and colloidal and also provides a journey of minerals by a process of synthesis, motion of living matter and organic matter decomposition.


biogeochemical cycles of define the urban road or a more closed-loop individual components such as water, carbon, oxygen, nitrogen, sulfur, phosphorus and other elements
including the trace of the vital organisms.

All the elements, especially metal worked by man and
used in subsequent production cycles in the industry,
go through different ecosystems and the trophic chain.
These substances are introduced into the environment and bio-accumulation
are consumed by humans in a variety of plant and animal.
there are biological barriers to protect living organisms against excess
concentration of chemical elements.

barriers biological activity is limited and when they are weakened
(eg, illness, stress), the accumulation of toxins in miękiszowych
organs man, or in hard tissues or skin.


Toxic elements flow from a contaminated environment
water (Hg, Cd, Pb, Cu, Zn, Sr) from soil (Cd, Zn, B, Sn, Cs, Rb)
and air through the gastrointestinal tract, respiratory through the skin,
pass through the biological barrier blood - brain
and through the placenta to the embryo.