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Comparative study of infrared techniques for fast biogeochemical sediment analyses
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
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2011 (English)In: Geochemistry Geophysics Geosystems, ISSN 1525-2027, Vol. 12, Q10003- p.Article in journal (Refereed) Published
Abstract [en]

Analysis of sediment samples in the visible to mid infrared (IR) region requires small amounts of sample material and enables rapid and cost efficient geochemical analysis of mineral and organic sediment components. Here we use geochemical properties (total organic and inorganic carbon, biogenic silica, total nitrogen) from the ICDP deep drilling project PASADO to compare three different IR spectroscopy techniques: Diffuse Reflectance Fourier Transform IR Spectrometry (DRIFTS), Attenuated Total Reflectance Fourier Transform IR Spectroscopy (ATR-FTIRS) and Visible Near IR Spectroscopy (VNIRS). ATR-FTIRS and VNIRS are more rapid techniques compared to DRIFTS. Results show that calibration models developed using DRIFTS are most robust (correlation coefficient: R = 0.92 for TIC, R = 0.84 for BSi, R = 0.97 for TOC, R = 0.95 for TN). However, good statistical performance was also obtained by using ATR-FTIRS and VNIRS. When time and costs are limiting factors, these tools may be given preference for rapid biogeochemical screening.

Place, publisher, year, edition, pages
Washington, DC: AGU and the Geochemical Society , 2011. Vol. 12, Q10003- p.
Keyword [en]
Diffuse Reflectance Fourier Transform Infrared Spectrometry (DRIFTS), Visible Near Infrared Spectroscopy (VNIRS), total inorganic carbon (TIC), total organic carbon (TOC)
National Category
Geochemistry Geophysics
URN: urn:nbn:se:umu:diva-48955DOI: 10.1029/2011GC003686ISI: 000295825800003OAI: diva2:452659
Available from: 2011-10-31 Created: 2011-10-28 Last updated: 2011-10-31Bibliographically approved

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Rosen, Peter
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Department of Ecology and Environmental Sciences
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