Study of the effect of fossil organic carbon on 14C in groundwater from Hvinningdal, Denmark

E. Boaretto; L. Thorling; Á E. Sveinbjórnsdóttir; Y. Yechieli; J. Heinemeier

doi:10.1017/s0033822200018889

Study of the effect of fossil organic carbon on ¹⁴C in groundwater from Hvinningdal, Denmark

E. Boaretto, L. Thorling, Á E. Sveinbjórnsdóttir, Y. Yechieli, J. Heinemeier

Research output: Contribution to journal › Conference article in journal › peer-review

26 Citations (Scopus)

Abstract

The carbonate hydrochemistry of groundwater from the Hvinningdal aquifer (Denmark) was studied by radiocarbon (accelerator mass spectrometry (AMS)) and δ¹³C measurements as a preliminary step towards ¹⁴C groundwater dating. The ¹⁴C concentrations varied between 30 and 100 percent modern carbon (pMC) in apparent contradiction with tritium (³H) data, which in most cases indicate a post-bomb date. The dilution of ¹⁴C can be explained as being due to the combined effect of dissolution of old soil carbonate and oxidation of old organic carbon. The last effect proved to be essential. To calculate this correction the dissolved oxygen concentration was used together with the δ¹³C values. The combined corrections bring the ¹⁴C concentrations up to post-bomb levels in better agreement with the ³H data.

Original language	English
Pages (from-to)	915-920
Number of pages	6
Journal	Radiocarbon
Volume	40
Issue number	2
DOIs	https://doi.org/10.1017/s0033822200018889
Publication status	Published - 1997
Externally published	Yes
Event	16th International ¹⁴C Conference - Conference Centre of Groningen, Groningen, Netherlands Duration: 16 Jun 1997 → 20 Jun 1997

Programme Area

Programme Area 2: Water Resources

Access to Document

10.1017/s0033822200018889Licence: Other

Cite this

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title = "Study of the effect of fossil organic carbon on 14C in groundwater from Hvinningdal, Denmark",

abstract = "The carbonate hydrochemistry of groundwater from the Hvinningdal aquifer (Denmark) was studied by radiocarbon (accelerator mass spectrometry (AMS)) and δ13C measurements as a preliminary step towards 14C groundwater dating. The 14C concentrations varied between 30 and 100 percent modern carbon (pMC) in apparent contradiction with tritium (3H) data, which in most cases indicate a post-bomb date. The dilution of 14C can be explained as being due to the combined effect of dissolution of old soil carbonate and oxidation of old organic carbon. The last effect proved to be essential. To calculate this correction the dissolved oxygen concentration was used together with the δ13C values. The combined corrections bring the 14C concentrations up to post-bomb levels in better agreement with the 3H data.",

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author = "E. Boaretto and L. Thorling and Sveinbj{\'o}rnsd{\'o}ttir, {{\'A} E.} and Y. Yechieli and J. Heinemeier",

year = "1997",

doi = "10.1017/s0033822200018889",

language = "English",

volume = "40",

pages = "915--920",

journal = "Radiocarbon",

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publisher = "Cambridge University Press",

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note = "16th International <sup>14</sup>C Conference ; Conference date: 16-06-1997 Through 20-06-1997",

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TY - JOUR

T1 - Study of the effect of fossil organic carbon on 14C in groundwater from Hvinningdal, Denmark

AU - Boaretto, E.

AU - Thorling, L.

AU - Sveinbjórnsdóttir, Á E.

AU - Yechieli, Y.

AU - Heinemeier, J.

PY - 1997

Y1 - 1997

N2 - The carbonate hydrochemistry of groundwater from the Hvinningdal aquifer (Denmark) was studied by radiocarbon (accelerator mass spectrometry (AMS)) and δ13C measurements as a preliminary step towards 14C groundwater dating. The 14C concentrations varied between 30 and 100 percent modern carbon (pMC) in apparent contradiction with tritium (3H) data, which in most cases indicate a post-bomb date. The dilution of 14C can be explained as being due to the combined effect of dissolution of old soil carbonate and oxidation of old organic carbon. The last effect proved to be essential. To calculate this correction the dissolved oxygen concentration was used together with the δ13C values. The combined corrections bring the 14C concentrations up to post-bomb levels in better agreement with the 3H data.

AB - The carbonate hydrochemistry of groundwater from the Hvinningdal aquifer (Denmark) was studied by radiocarbon (accelerator mass spectrometry (AMS)) and δ13C measurements as a preliminary step towards 14C groundwater dating. The 14C concentrations varied between 30 and 100 percent modern carbon (pMC) in apparent contradiction with tritium (3H) data, which in most cases indicate a post-bomb date. The dilution of 14C can be explained as being due to the combined effect of dissolution of old soil carbonate and oxidation of old organic carbon. The last effect proved to be essential. To calculate this correction the dissolved oxygen concentration was used together with the δ13C values. The combined corrections bring the 14C concentrations up to post-bomb levels in better agreement with the 3H data.

KW - C14 datering grundvand

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U2 - 10.1017/s0033822200018889

DO - 10.1017/s0033822200018889

M3 - Conference article in journal

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T2 - 16th International <sup>14</sup>C Conference

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