The human cells contain a variety of trace elements and minerals that perform a number of catalytic or structural functions in the body metabolism. Moreover, health care consumable supplies such as pharmaceutical, dental and surgical materials and medical devices may contain trace amounts of different inorganic or metallic elements. In addition to these, several biological samples, epithelial linings, respiratory mucosal linings, and the digestive tract may come in contact with foreign objects and can get exposed to rare elements which can be harmful.

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