Definition of Trace Elements



The chemical elements which are present in a very small concentration are termed the trace elements. There are two classes of trace elements i.e., essential and non-essential. As the name describes, essential trace elements are necessary for carrying out the normal physiological and biochemical processes in the species of plants as well as in animals. The trace elements also serve the role of catalysts in a number of redox reactions.

 


The trace elements are defined in different ways according to the fields. In analytical chemistry, if the element has an average concentration of less than 100 ppm, it is considered to trace whereas, with respect to biochemistry, a trace element is that which is required in very small quantity yet is essential for the proper growth and development of an organism.

 


Examples of Trace Elements:

Some of the trace elements that are present in the animal systems are iron, copper, cobalt, zinc, fluorine, manganese, etc.

 

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