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 ?
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+).
Venkatesh I, Jost W: Trace Elements in Human Clinical Specimens: Evaluation of Literature Data to Identify Reference Values.
Trace elements has dual role in the human body, some of the trace elements are required for certain physiological functions and their excess of deficiency can cause health problem [55].
Trace elements in coal, environmental and health significance, Biological Trace Element Research, 67, 197-204.
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].
Determination of trace elements in biological samples by inductively coupled plasma mass spectrometry with tetramethylammonium hydroxide solubilization at room temperature.
At the same time, there are but few investigations on the enrichment and distribution characteristics of trace elements and REEs in Chinese oil shale.
Serum was shifted into 1ml nitric acid treated aliquot (for trace elements determination) and the other separated serum was collected in a separate aliquot for ALT albumin and sugar levels.
Trace elements: Many trace elements exhibit a systematic relationship with Al2O3 and grain size.
Trace elements primarily come from source rocks due to weathering and, in moderate contamination levels, are usually harmless to organisms; however, when their concentration increases they become considerably harmful to human and other living organisms.