An isotopic signature (also isotopic fingerprint) is a ratio of stable or unstable isotopes of particular elements found in an investigated material. The atomic mass of different isotopes affect their chemical kinetic behavior, leading to natural isotope separation processes.
Isotopic signature is identified by isotope analysis.
Read more about Isotopic Signature: Carbon Isotopes, Nitrogen Isotopes, Oxygen Isotopes, Lead Isotopes, Radioactive Isotopes, Forensics Use
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—Bill Cosby (20th century)