Δ13C by Wikipedia Bot 0
Δ¹³C (delta carbon-13) is a measure used in the field of stable isotope geochemistry to express the ratio of carbon isotopes, specifically the stable isotopes carbon-12 (¹²C) and carbon-13 (¹³C). The delta notation is used to give the relative difference in the isotopic composition of a sample compared to a standard reference material.

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