Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood

Frank Keppler, David B. Harper, Robert M. Kalin, Wolfram Meier-Augenstein, Nicola Farmer, Simon Davis, Hanns-Ludwig Schmidt, David M. Brown, John T. G. Hamilton

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Stable isotope ratios of organic compounds are valuable tools for determining the geographical origin, identity, authenticity or history of samples from a vast range of sources such as sediments, plants and animals, including humans.
Hydrogen isotope ratios (δ2H values) of methoxyl groups in lignin from wood of trees grown in different geographical areas were measured using compound-specific pyrolysis isotope ratio mass spectrometry analysis. Lignin methoxyl groups were depleted in 2H relative to both meteoric water and whole wood. A high correlation (r2 = 0.91) was observed between the δ2H values of the methoxyl groups and meteoric water, with a relatively uniform fractionation of –216 ± 19‰ recorded with respect to meteoric water over a range of δ2H values from –110 in northern Norway to +20‰ in Yemen. Thus, woods from northern latitudes can be clearly distinguished from those from tropical regions. By contrast, the δ2H values of bulk wood were only relatively poorly correlated (r2 = 0.47) with those of meteoric water. Measurement of the δ2H values of lignin methoxyl groups is potentially a powerful tool that could be of use not only in the constraint of the geographical origin of lignified material but also in paleoclimate, food authenticity and forensic investigations.
LanguageEnglish
Pages600-609
Number of pages10
JournalNew Phytologist
Volume176
Issue number3
DOIs
Publication statusPublished - Nov 2007

Fingerprint

Lignin
Proxy
Isotopes
hydrogen
Hydrogen
lignin
isotopes
Water
water
product authenticity
Yemen
pyrolysis
Norway
organic compounds
stable isotopes
Mass Spectrometry
tropics
fractionation
mass spectrometry
Food

Keywords

  • wood
  • geographical origin
  • lignified material
  • nonexchangeable hydrogen
  • paleoclimate proxy
  • stable hydrogen isotopes

Cite this

Keppler, Frank ; Harper, David B. ; Kalin, Robert M. ; Meier-Augenstein, Wolfram ; Farmer, Nicola ; Davis, Simon ; Schmidt, Hanns-Ludwig ; Brown, David M. ; Hamilton, John T. G. / Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood. In: New Phytologist. 2007 ; Vol. 176, No. 3. pp. 600-609.
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Keppler, F, Harper, DB, Kalin, RM, Meier-Augenstein, W, Farmer, N, Davis, S, Schmidt, H-L, Brown, DM & Hamilton, JTG 2007, 'Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood' New Phytologist, vol. 176, no. 3, pp. 600-609. https://doi.org/10.1111/j.1469-8137.2007.02213.x

Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood. / Keppler, Frank; Harper, David B.; Kalin, Robert M.; Meier-Augenstein, Wolfram; Farmer, Nicola; Davis, Simon; Schmidt, Hanns-Ludwig; Brown, David M.; Hamilton, John T. G.

In: New Phytologist, Vol. 176, No. 3, 11.2007, p. 600-609.

Research output: Contribution to journalArticle

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T1 - Stable hydrogen isotope ratios of lignin methoxyl groups as a paleoclimate proxy and constraint of the geographical origin of wood

AU - Keppler, Frank

AU - Harper, David B.

AU - Kalin, Robert M.

AU - Meier-Augenstein, Wolfram

AU - Farmer, Nicola

AU - Davis, Simon

AU - Schmidt, Hanns-Ludwig

AU - Brown, David M.

AU - Hamilton, John T. G.

PY - 2007/11

Y1 - 2007/11

N2 - Stable isotope ratios of organic compounds are valuable tools for determining the geographical origin, identity, authenticity or history of samples from a vast range of sources such as sediments, plants and animals, including humans.Hydrogen isotope ratios (δ2H values) of methoxyl groups in lignin from wood of trees grown in different geographical areas were measured using compound-specific pyrolysis isotope ratio mass spectrometry analysis. Lignin methoxyl groups were depleted in 2H relative to both meteoric water and whole wood. A high correlation (r2 = 0.91) was observed between the δ2H values of the methoxyl groups and meteoric water, with a relatively uniform fractionation of –216 ± 19‰ recorded with respect to meteoric water over a range of δ2H values from –110 in northern Norway to +20‰ in Yemen. Thus, woods from northern latitudes can be clearly distinguished from those from tropical regions. By contrast, the δ2H values of bulk wood were only relatively poorly correlated (r2 = 0.47) with those of meteoric water. Measurement of the δ2H values of lignin methoxyl groups is potentially a powerful tool that could be of use not only in the constraint of the geographical origin of lignified material but also in paleoclimate, food authenticity and forensic investigations.

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KW - wood

KW - geographical origin

KW - lignified material

KW - nonexchangeable hydrogen

KW - paleoclimate proxy

KW - stable hydrogen isotopes

U2 - 10.1111/j.1469-8137.2007.02213.x

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JO - New Phytologist

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ER -