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isotope
Mass Spectrometry: The Molecular Scale That Weighs Ions
Mass spectrometry is an analytical technique that measures the mass-to-charge ratio of ions to identify and quantify molecules in a sample.
Isotope Geochemistry: How Atomic Fingerprints Decode Earth's History
Isotope geochemistry reads the ratios of atomic isotopes in rocks, water, and air to reconstruct Earth's history and trace environmental processes.
Uranium Decay Series: The 14 Steps from Uranium to Lead
The uranium decay series is the chain of 14 radioactive transformations through which uranium-238 converts into stable lead-206.
Hydrogen Isotope Fractionation: Climate Clues in Water
Hydrogen isotope fractionation separates hydrogen's isotopes between substances during physical and chemical processes, driven by mass differences.
Carbon Dating Accuracy: The Limits of a 50,000-Year Clock
Carbon dating accuracy measures how closely radiocarbon dates match a sample's true age, expressed as a calendar-year range with a stated margin of...
