trace elements


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trace el·e·ments

elements present in minute amounts in the body, many of which are essential in metabolism or for the manufacture of essential compounds, for example, Zn, Se, V, Ni, Mg, Mn.

trace el·e·ments

(trās el'ĕ-mĕnts)
Elements present in minute amounts in the body (e.g., Zn, Se, V, Ni, Mg, Mn), many of which are essential in metabolism or for the manufacture of essential compounds.

trace elements

Dietary minerals required only in tiny amounts to maintain health. They include zinc, copper, chromium and selenium, and are rarely deficient except under unusual circumstances such as artificial feeding.

Trace elements

A group of elements that are present in the human body in very small amounts but are nonetheless important to good health. They include chromium, copper, cobalt, iodine, iron, selenium, and zinc. Trace elements are also called micronutrients.
References in periodicals archive ?
Trace elements such as Cu, Fe and Li are needed in a very little concentration for many physiological functions.
Several researchers described the significance of trace elements (minerals), which increased the alertness of minerals in such plants [2].
ICP-MS was used for the analytical determination of trace elements in both commercially available white maize flour and the maize grown at University of Agriculture, Faisalabad, Pakistan.
Trace elements are also involved in key metabolic events such as respiration, photosynthesis, and fixation and assimilation of some major nutrients (Kabata-Pendias and Pendias, 1991).
Some trace elements have potential to expand the lattice parameters of the synthetic apatite crystal cell along the a-axis such as ferrous (Fe2+), ferric (Fe3+), strontium (Sr2+) and zinc ions (Zn2+) (molar fraction >10%) whereas it shrinks with silicate (SiO44-), carbonate (CO32-), magnesium (Mg2+), Zn2+ (molar fraction < 10%) and titanium ions (Ti4+).SiO44-, CO32-, Zn2+, Fe2+, Fe3+ and strontium ions (Sr2+) can increase the lattice parameters along the c-axis, decreased by Mg2+, nickelous (Ni2+), chromic (Cr3+), cobaltous (Co2+) and Ti4+.
Posterior cord syndrome can be caused by systemic diseases, such as syphilis and deficiency of cobalamin and trace elements, such as copper, zinc, and aluminum.
In this special issue there are papers that explore various concepts related with advantages and disadvantages of the presence of trace elements in living organisms.
In order to model the processes of retention of trace elements in the body, we analyzed more than 2000 samples of dynamic internal media of children and adolescents living in the city of Kazan (Russia) and more than 750 samples of drinking water consumed by them to assess the concentration of the most common trace elements (Zn, Cu, Fe, Pb, Cr, and Sr).
It also has been proven that the individuals with diabetes mellitus have almost half the level of manganese in their blood as compared to those who are normal.12 It is speculated that trace elements might have specific roles in the pathogenesis and progression towards type-2 diabetes mellitus.
The reason of present study is to appraise abundance and distribution of major and trace elements of groundwater and soils of Taluka Khairpur.
Reference to chemical analysis, the ingredients in tea are very complicated which may be due to soil chemistry or processing with tanning substances like flavonols, alkaloids, protein, amino acids, enzymes, aroma, vitamins and trace elements [5-8].
The order uses the company's proprietary VE Technology sampling system to provide a fast and uniquely accurate method of detecting trace elements, such as mercury in the LNG liquification process.