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KOOLSTOF C-14 METHODE
             27/02/1940



         KU Leuven – P&O 1
             19/10/2012
  Dennis De bruyn, Dries De Backker
WAT IS KOOLSTOF C-14?
•   C14-datering: methode waarmee de ouderdom van organisch materiaal wordt bepaald
•   Met behulp van het isotoop koolstof 14
•   Bruikbaar voor materialen tot circa 60.000 jaar oud
ONTDEKKING
•   Willard Frank Libby
•   Universiteit van Chicago
•   Nobelprijs scheikunde 1960
ONTSTAAN VAN ISOTOOP C-14
•   C-14: ontstaat in de troposfeer en stratosfeer
     • Kosmische straling valt in
     • Neutronen ontstaan
     •   1n   + 14N → 14C + 1p
•   C-14 reageert met O2 tot CO2
•   Mengt met de rest van de atmosfeer
WERKING
•   Planten → fotosynthese
•   Nemen CO2 op.
•   Bij sterfte: verhouding C14 dezelfde als in de lucht.
•   Halveringstijd C-14 = 5730 jaar
•   14C   → 14N + β
•   Datering ouderdom op basis van de nog aanwezige C-14
TOEPASSING IN BEKENDE PROJECTEN
•   Lijkwade van Turijn
     • Volgens de legende: van Jezus (2000 jaar oud)
     • Na onderzoek met C-14-methode: slechts 800 jaar oud
BRONNEN
•   http://science.howstuffworks.com/environmental/earth/geology/carbon-141.htm
•   Wikipedia – Shroud of Turin
•   Wikipedia – Carbon 14
THIS WAS A DENNIS DE BRUYN AND DRIES DE
          BACKKER PRODUCTION

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Koolstof 14 methode

  • 1. KOOLSTOF C-14 METHODE 27/02/1940 KU Leuven – P&O 1 19/10/2012 Dennis De bruyn, Dries De Backker
  • 2. WAT IS KOOLSTOF C-14? • C14-datering: methode waarmee de ouderdom van organisch materiaal wordt bepaald • Met behulp van het isotoop koolstof 14 • Bruikbaar voor materialen tot circa 60.000 jaar oud
  • 3. ONTDEKKING • Willard Frank Libby • Universiteit van Chicago • Nobelprijs scheikunde 1960
  • 4. ONTSTAAN VAN ISOTOOP C-14 • C-14: ontstaat in de troposfeer en stratosfeer • Kosmische straling valt in • Neutronen ontstaan • 1n + 14N → 14C + 1p • C-14 reageert met O2 tot CO2 • Mengt met de rest van de atmosfeer
  • 5. WERKING • Planten → fotosynthese • Nemen CO2 op. • Bij sterfte: verhouding C14 dezelfde als in de lucht. • Halveringstijd C-14 = 5730 jaar • 14C → 14N + β • Datering ouderdom op basis van de nog aanwezige C-14
  • 6. TOEPASSING IN BEKENDE PROJECTEN • Lijkwade van Turijn • Volgens de legende: van Jezus (2000 jaar oud) • Na onderzoek met C-14-methode: slechts 800 jaar oud
  • 7. BRONNEN • http://science.howstuffworks.com/environmental/earth/geology/carbon-141.htm • Wikipedia – Shroud of Turin • Wikipedia – Carbon 14
  • 8. THIS WAS A DENNIS DE BRUYN AND DRIES DE BACKKER PRODUCTION