carbon-13
Neutron-rich carbon variant
Carbon-13 is a stable isotope of carbon containing six protons and seven neutrons, making it slightly heavier than the more common carbon-12.
It occurs naturally at about 1% of all carbon.
Scientists use carbon-13 in NMR spectroscopy and metabolic studies because it can be tracked without radioactivity: The researchers used carbon-13-labeled glucose to trace metabolic pathways.
Uncharged nuclear particle
- protonPositive nuclear particle
- atomic massWeighted average of isotopes
- mass numberProtons and neutrons combined
- nuclideAtom classified by nucleus
Alcohol detection via exhalation
- fatty acid synthesisMetabolic creation of lipids
- drug metabolismBody's chemical processing of medications
- biosynthesisLiving production of molecules
- turnoverSales volume or attrition
incorporation · enrichment · substrate · precursor · kinetics · H. pylori
Nuclei absorbing electromagnetic energy
- spectrometerMeasures electromagnetic radiation properties
- resonanceAmplified oscillation at natural frequency
- signalMessage-conveying cue
- peakUtmost height attained
spectrum · molecular structure · organic compounds · decoupling · relaxation · sensitivity · probe · solvent
Study of prehistoric climates
- ice coresCylindrical glacier samples
- tree ringsAnnual wood layers
- ocean temperatureThermal state of seawater
- paleoecologyStudy of prehistoric ecosystems
Natural underground hydrocarbon liquid
- oil explorationHunting for petroleum deposits
- source rockOrganic-rich sediment yielding petroleum
- organic matterMaterial from living sources
- sedimentaryFormed from deposited material
neutron
Uncharged nuclear particle
- protonPositive nuclear particle
- atomic massWeighted average of isotopes
- mass numberProtons and neutrons combined
nuclide · abundance · nucleus · mass spectrometry · fractionation
breath test
Alcohol detection via exhalation
- fatty acid synthesisMetabolic creation of lipids
- drug metabolismBody's chemical processing of medications
- biosynthesisLiving production of molecules
turnover · incorporation · enrichment · substrate · precursor · kinetics · H. pylori
magnetic resonance
Nuclei absorbing electromagnetic energy
- spectrometerMeasures electromagnetic radiation properties
- resonanceAmplified oscillation at natural frequency
- signalMessage-conveying cue
peak · spectrum · molecular structure · organic compounds · decoupling · relaxation · sensitivity · probe · solvent · ppm
paleoclimatology
Study of prehistoric climates
- ice coresCylindrical glacier samples
- tree ringsAnnual wood layers
- ocean temperatureThermal state of seawater
petroleum
Natural underground hydrocarbon liquid
- oil explorationHunting for petroleum deposits
- source rockOrganic-rich sediment yielding petroleum
- organic matterMaterial from living sources
sedimentary · provenance · groundwater · food web · biogeochemistry
- isotope scienceradioisotopes, isotope geochemistry, oxygen-18, nitrogen-15, uranium-238
- Isotope Tracerstracer, radioisotope, isotope, tritium, deuterium
- Isotopeshydrogen-1, helium-3, helium-4, oxygen-16, oxygen-18
- MRI/NMRMRI scan, magnetic field, resonance, T1, spectrometer
- Tracerstechnetium-99m, fluorescein, tritium, iodine-131, radioactive isotopes
carbon, carbons, carbonate, carbonates, carbonated, carbonation, carbonize, carbonized, carbonizing