Universität zu Köln

Rosen, Peter, Vogel, Hendrik ORCID: 0000-0002-9902-8120, Cunningham, Laura, Hahn, Annette, Hausmann, Sonja ORCID: 0000-0002-5411-5298, Pienitz, Reinhard, Zolitschka, Bernd ORCID: 0000-0001-8256-0420, Wagner, Bernd ORCID: 0000-0002-1369-7893 and Persson, Per ORCID: 0000-0001-9172-3068 (2011). Universally Applicable Model for the Quantitative Determination of Lake Sediment Composition Using Fourier Transform Infrared Spectroscopy. Environ. Sci. Technol., 45 (20). S. 8858 - 8866. WASHINGTON: AMER CHEMICAL SOC. ISSN 0013-936X

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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 to that of conventional geochemical analyses. Consequently FTIRS offers a useful and rapid alternative to conventional analyses for the quantitative determination of BSi, TIC, and TOC. The rapidity, cost-effectiveness, and small sample size required enables FTIRS determination of geochemical properties to be undertaken at higher resolutions than would otherwise be possible with the same resource allocation, thus providing crucial sedimentological information for climatic and environmental reconstructions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rosen, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Vogel, Hendrik UNSPECIFIED orcid.org/0000-0002-9902-8120 UNSPECIFIED Cunningham, Laura UNSPECIFIED UNSPECIFIED UNSPECIFIED Hahn, Annette UNSPECIFIED UNSPECIFIED UNSPECIFIED Hausmann, Sonja UNSPECIFIED orcid.org/0000-0002-5411-5298 UNSPECIFIED Pienitz, Reinhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Zolitschka, Bernd UNSPECIFIED orcid.org/0000-0001-8256-0420 UNSPECIFIED Wagner, Bernd UNSPECIFIED orcid.org/0000-0002-1369-7893 UNSPECIFIED Persson, Per UNSPECIFIED orcid.org/0000-0001-9172-3068 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-487252
DOI:	10.1021/es200203z
Journal or Publication Title:	Environ. Sci. Technol.
Volume:	45
Number:	20
Page Range:	S. 8858 - 8866
Date:	2011
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	0013-936X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SOUTHERN PATAGONIA; BIOGENIC SILICA; ARGENTINA; CARBON; OPAL; AIKE Multiple languages Engineering, Environmental; Environmental Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48725