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Characterization of solid and aqueous phases of a peat bog profile using molecular fluorescence spectroscopy, ESR and FT-IR, and comparison with physical properties

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Title: Characterization of solid and aqueous phases of a peat bog profile using molecular fluorescence spectroscopy, ESR and FT-IR, and comparison with physical properties
Authors: Cocozza, C.1 cloux@mail.clio.it, D'Orazio, V.1, Miano, T.M.1, Shotyk, W.2
Source: Organic Geochemistry. Jan2003, Vol. 34 Issue 1, p49. 12p.
Subjects: Peat bogs
Geographic Terms: Jura Mountains (France & Switzerland), Switzerland
Abstract: A peat core (10×10×100 cm) was removed from Etang de la Grue`re, an ombrotrophic peat bog in the Jura Mountains of Switzerland. The core was sliced into 3 cm sections and the samples characterized with respect to ash content, bulk density, moisture content, and concentrations of C and H. Solid peat residues were freeze-dried, milled very finely and analyzed using Fourier transform infrared (FT-IR) and electron spin resonance (ESR) spectroscopy. Pore waters expressed from the peat slices were collected, filtered (0.2 μm membrane filters) and analyzed using fluorescence emission, excitation and synchronous-scan spectroscopy, in addition to pH. Taken together, the physical properties of the core and the ESR measurements of solid peats appear to record the variation in humification of refractory organic matter (peat). The fluorescence and FT-IR data, on the other hand, appear to characterize the extent of recent decomposition of labile organic matter. In fact, these data indicate the presence of two distinct zones in the bog: (i) the acrotelm, or zone of active decay, which may be oxygenated, depending on the season and the depth to the water table, and (ii) the catotelm which is always anoxic, and where organic matter decomposition rates are negligible. [Copyright &y& Elsevier]
Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 8806885
AccessLevel: 6
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  Data: Characterization of solid and aqueous phases of a peat bog profile using molecular fluorescence spectroscopy, ESR and FT-IR, and comparison with physical properties
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  Data: <searchLink fieldCode="AR" term="%22Cocozza%2C+C%2E%22">Cocozza, C.</searchLink><relatesTo>1</relatesTo><i> cloux@mail.clio.it</i><br /><searchLink fieldCode="AR" term="%22D'Orazio%2C+V%2E%22">D'Orazio, V.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Miano%2C+T%2EM%2E%22">Miano, T.M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shotyk%2C+W%2E%22">Shotyk, W.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Organic+Geochemistry%22">Organic Geochemistry</searchLink>. Jan2003, Vol. 34 Issue 1, p49. 12p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Peat+bogs%22">Peat bogs</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Jura+Mountains+%28France+%26+Switzerland%29%22">Jura Mountains (France & Switzerland)</searchLink><br /><searchLink fieldCode="DE" term="%22Switzerland%22">Switzerland</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A peat core (10×10×100 cm) was removed from Etang de la Grue`re, an ombrotrophic peat bog in the Jura Mountains of Switzerland. The core was sliced into 3 cm sections and the samples characterized with respect to ash content, bulk density, moisture content, and concentrations of C and H. Solid peat residues were freeze-dried, milled very finely and analyzed using Fourier transform infrared (FT-IR) and electron spin resonance (ESR) spectroscopy. Pore waters expressed from the peat slices were collected, filtered (0.2 μm membrane filters) and analyzed using fluorescence emission, excitation and synchronous-scan spectroscopy, in addition to pH. Taken together, the physical properties of the core and the ESR measurements of solid peats appear to record the variation in humification of refractory organic matter (peat). The fluorescence and FT-IR data, on the other hand, appear to characterize the extent of recent decomposition of labile organic matter. In fact, these data indicate the presence of two distinct zones in the bog: (i) the acrotelm, or zone of active decay, which may be oxygenated, depending on the season and the depth to the water table, and (ii) the catotelm which is always anoxic, and where organic matter decomposition rates are negligible. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Organic Geochemistry is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/S0146-6380(02)00208-5
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 49
    Subjects:
      – SubjectFull: Peat bogs
        Type: general
      – SubjectFull: Jura Mountains (France & Switzerland)
        Type: general
      – SubjectFull: Switzerland
        Type: general
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      – TitleFull: Characterization of solid and aqueous phases of a peat bog profile using molecular fluorescence spectroscopy, ESR and FT-IR, and comparison with physical properties
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            NameFull: Cocozza, C.
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            NameFull: D'Orazio, V.
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            NameFull: Miano, T.M.
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            NameFull: Shotyk, W.
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              M: 01
              Text: Jan2003
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              Y: 2003
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            – TitleFull: Organic Geochemistry
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