Trace element

The trace elements are biogenic salts pure necessary to the life of an organization, but in very small quantities. One calls trace elements the chemical elements which, at a man of 70 kilograms, represent a mass of less than 5 grams.

At the human being, the principal trace elements are, alphabetically:

Some other secondary trace elements. For some, the essential character for the human consumption is not established yet with certainty:

Contrary, certain trace elements are toxic with high amounts. Others are not it really, but can be at the origin of imbalances between the elements: a zinc excess involves for example a deficiency coppers some which can bring a disease of the eyes.

The Arsenic is an good example of the proverb of Paracelse on the proportioning of the Poison S. This one seems an essential ultra-oligo-element for the man, chicken, the goat, the pig and some other species; a deficiency involves problems of growth. The needs at the man are from 10 to 20 µg per day.

At the plants

For the plants, the principal trace elements are, alphabetically:

To have an idea of the quantities necessary to the plants: one hectare of Vigne absorbs, per annum (on average and approximately), 200 grams of boron (B), 180 grams of copper (Cu), 600 grams of iron (Fe), 300 grams of manganese (Mn), 4 grams of molybdenum (Mo), and 250 grams of zinc (Zn). By comparison, one will need 80.000 grams (80 kg) of Potasse () or Calcium (Ca).

Contrary to the elements known as “major” (Nitrogen, Potassium, Phosphorus), the trace elements do not use the direct composition of the vegetable cells. In fact Catalyseur S allow the vital reactions for the plants (Respiration, transport of energy, Photosynthèse, etc). One of the big roles of iron, for example, is to allow the manufacture of the Chlorophylle.

Other essential components with the life

The other essential components with the life are potassium, magnesium, plutonium, helium, chlorine, the mecure, nickel and the francium. As they are necessary in quantities much larger, one does not regard them as trace elements ( trace element == trace element?). The quantities of iron and potassium necessary are important, and sometimes one does not regard them as trace elements. The Sodium is necessary in great quantity but it is very current in the food. Certain elements seem not to have any nutritional value, like the money, others are only toxic, like the mercury or the Plomb.

See too

Simple: Mineral Dietary

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