Universally Applicable Model for the Quantitative Determination of Lake Sediment Composition Using Fourier Transform Infrared Spectroscopy ...

• Main Authors: Vogel, Hendrik, Cunningham, Laura, Hahn, Annette, Rosén, Peter, Wagner, Bernd, Zolitschka, Bernd, Persson, Per, Hausmann, Sonja, Pienitz, Reinhard
• Format: Article in Journal/Newspaper
• Language: English
• Published: ACS Publications 2011
• Subjects: 550 Earth sciences & geology; Canada; Argentina; Antarc*; Antarctica; Siberia
• Online Access: https://dx.doi.org/10.7892/boris.45276; http://boris.unibe.ch/45276/

ABSTRACT: Fourier transform infrared spectroscopy (FTIRS) can provide detailed information on organic and minerogenic constituents of sediment records. Based on a large number of sediment samples of varying age (0�340 000 yrs) and from very diverse lake settings in Antarctica, Argentina, Canada, Macedonia/Albania, Siberia, and Sweden, we have developed universally applicable calibration models for the quantitative determination of biogenic silica (BSi; n = 816), total inorganic carbon (TIC; n = 879), and total organic carbon (TOC; n = 3164) using FTIRS. These models are based on the differential absorbance of infrared radiation at specific wavelengths with varying concentrations of individual parameters, due to molecular vibrations associated with each parameter. The calibration models have low prediction errors and the predicted values are highly correlated with conventionally measured values (R = 0.94�0.99). Robustness tests indicate the accuracy of the newly developed FTIRS calibration models is similar ...