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2009•EGU General Assembly Conference AbstractsRequires access

Spectroscopic characterization of porewater and water-extractable organic matter along a peat bog profile

Claudio Zaccone, Valeria D’Orazio, Teodoro Miano

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Abstract

The aim of the present study was to identify and compare chemical, physical and spectroscopic features of porewaters and corresponding water-extractable organic matter (WEOM) samples taken from a 105 cm ombrotrophic peat bog profile. The peat core was collected in 2005 from a Swiss bog and divided into 91 slices of 1 cm of thickness. Extracted porewater samples were filtered (0.45 μm), analyzed for pH and dissolved organic carbon (DOC) concentration and characterized by means of UV-Vis (E4/E6 ratio) and fluorescence spectroscopies. The same analyses were carried out also on the WEOM of peat.

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What this paper is about

The aim of the present study was to identify and compare chemical, physical and spectroscopic features of porewaters and corresponding water-extractable organic matter (WEOM) samples taken from a 105 cm ombrotrophic peat bog profile. The peat core was collected in 2005 from a Swiss bog and divided into 91 slices of 1 cm of thickness. Extracted porewater samples were filtered (0.45 μm), analyzed for pH and dissolved organic carbon (DOC) concentration and characterized by means of UV-Vis (E4/E6 ratio) and fluorescence spectroscopies. The same analyses were carried out also on the WEOM of peat.

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Available abstract

The aim of the present study was to identify and compare chemical, physical and spectroscopic features of porewaters and corresponding water-extractable organic matter (WEOM) samples taken from a 105 cm ombrotrophic peat bog profile. The peat core was collected in 2005 from a Swiss bog and divided into 91 slices of 1 cm of thickness. Extracted porewater samples were filtered (0.45 μm), analyzed for pH and dissolved organic carbon (DOC) concentration and characterized by means of UV-Vis (E4/E6 ratio) and fluorescence spectroscopies. The same analyses were carried out also on the WEOM of peat.

Key concepts: Peat, Ombrotrophic, Bog, Environmental chemistry, Dissolved organic carbon, Organic matter, Chemistry, Total organic carbon

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