Trace element

May 20th, 2015
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In analytical chemistry, a trace element is an element in a sample that has an average concentration of less than 100 parts per millionmeasured in atomic count or less than 100 micrograms per gram.

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Trace elementFrom Wikipedia, the free encyclopediaInanalytical chemistry, atrace elementis anelementin a sample that has an averageconcentrationof less than 100parts per millionmeasured in atomic count or less than 100 micrograms per gram.Inbiochemistry, atrace elementis adietary mineralthat is needed in very minute quantities for the proper growth, development, and physiology of the organism.[1]Ingeochemistry, atrace elementis a chemical element whose concentration is less than 1000ppmor 0.1%of arock's composition. The term is used mainly inigneous petrology. Trace elements will either prefer liquid or solid phase. If compatible with a mineral, it will prefer a solid phase (e.g., Ni compatible with Olivine). If it is incompatible with an element it will prefer a liquid phase. The measurement of this ratio is known as the partition coefficient. Trace elements can be substituted for network-forming cations in mineral structures. Minerals do not have to contain trace elements, i.e., they do not have to appear in the mineral's chemical formula. When practicing biodynamic farming it is important to utilize the trace elements of the soil, in order to give strength to the roots. Hydroponic practices however are decreasing the seed germination rate, causing and increase in pollution and waste.http://en.wikipedia.org/wiki/Trace_elementVI. Unique properties of waterA.Thermal properties(A good way to organize, understand, and

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