Combining diffusive gradients in thin films (DGT) and spectroscopic techniques for the determination of phosphorus species in soils

C Vogel; Ryo Sekine; D Steckenmesser; E Lombi; H Herzel; L Zuin; D Wang; R Félix; C Adam

doi:10.1016/j.aca.2019.01.037

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Combining diffusive gradients in thin films (DGT) and spectroscopic techniques for the determination of phosphorus species in soils

Journal article

Open access

Peer reviewed

Combining diffusive gradients in thin films (DGT) and spectroscopic techniques for the determination of phosphorus species in soils

C Vogel, Ryo Sekine, D Steckenmesser, E Lombi, H Herzel, L Zuin, D Wang, R Félix and C Adam

Analytica Chimica Acta, Vol.1057, pp.80-87

2019

DOI: https://doi.org/10.1016/j.aca.2019.01.037

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Abstract

A wide range of methods are used to estimate the plant-availability of soil phosphorus (P). Published research has shown that the diffusive gradients in thin films (DGT) technique has a superior correlation to plant-available P in soils compared to standard chemical extraction tests. In order to identify the plant-available soil P species, we combined DGT with infrared and P K- and L 2,3 -edge X-ray adsorption near-edge structure (XANES) spectroscopy. This was achieved by spectroscopically investigating the dried binding layer of DGT devices after soil deployment. All three spectroscopic methods were able to distinguish between different kinds of phosphates (poly-, trimeta-, pyro- and orthophosphate) on the DGT binding layer. However, infrared spectroscopy was most sensitive to distinguish between different types of adsorbed inorganic and organic phosphates. Furthermore, intermediates of the time-resolved hydrolysis of trimetaphosphate in soil could be analyzed.

Details

Title: Combining diffusive gradients in thin films (DGT) and spectroscopic techniques for the determination of phosphorus species in soils
Authors: C Vogel (Author) - Bundesanstalt für Materialforschung und –prüfung (BAM), Germany
Ryo Sekine (Author) - Centre for Ecology & Hydrology, United Kingdom
D Steckenmesser (Author) - Justus-Liebig University Giessen, Germany
E Lombi (Author) - University of South Australia
H Herzel (Author) - Bundesanstalt für Materialforschung und –prüfung (BAM), Germany
L Zuin (Author) - Canadian Light Source, Canada
D Wang (Author) - Canadian Light Source, Canada
R Félix (Author) - Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Germany
C Adam (Author) - Bundesanstalt für Materialforschung und –prüfung (BAM), Germany
Publication details: Analytica Chimica Acta, Vol.1057, pp.80-87
Publisher: Elsevier BV
Date published: 2019
DOI: 10.1016/j.aca.2019.01.037
ISSN: 0003-2670
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450984002621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Analytical

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