Fluourine dating

The content of both fluorine and silicon in bone, as well as the Ca: (PO) molar ratio, are time-dependent, which means that these parameters seem to be suitable for dating purposes.

Methods and improvements are proposed in order to make chemical analysis and chemical dating of bone as reliable as possible.

Iodine is classified as a halogen — a subset of very chemically reactive elements (Group 17 on the periodic table) that exist in the environment as compounds rather than as pure elements.

However, the assumption of contemporaneity may not always be correct.This is due to the fact that one or both of the objects may have been moved or redeposited into a different location. It is best known for the vital role it plays in thyroid hormone production in humans as well as in all vertebrates.The term halogen means "salt-producing." When these elements react with metals, they produce a wide variety of salts, such as calcium fluoride, sodium chloride (common table salt), silver bromide and potassium iodide.Iodine is the least reactive of the halogens as well as the most electropositive, meaning it tends to lose electrons and form positive ions during chemical reactions.

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