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Eusterhues K, Thieme J, Narvekar S, Araki T, Kazemian M, Kaulich B, Regier T, Wang J, Lugmeier J, Höschen C, Mansfeldt T, Totsche KU. Importance of inner-sphere P-O-Fe bonds in natural and synthetic mineral-organic associations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167232. [PMID: 37734608 DOI: 10.1016/j.scitotenv.2023.167232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
Sorption of organic molecules on mineral surfaces can occur through several binding mechanisms of varying strength. Here, we investigated the importance of inner-sphere P-O-Fe bonds in synthetic and natural mineral-organic associations. Natural organic matter such as water extracted soil organic matter (WESOM) and extracellular polymeric substances (EPS) from liquid bacterial cultures were adsorbed to goethite and examined by FTIR spectroscopy and P K-edge NEXAFS spectroscopy. Natural particles from a Bg soil horizon (Gleysol) were subjected to X-ray fluorescence (XRF) mapping, NanoSIMS imaging, and NEXAFS spectro-microscopy at the P K-edge. Inner-sphere P-O-Fe bonds were identified for both, adsorbed EPS extracts and adsorbed WESOMs. Characteristic infrared peaks for P-O-Fe stretching vibrations are present but cannot unambiguously be interpreted due to possible interferences with mono- and polysaccharides. For the Bg horizon, P was only found on Fe oxides, covering the entire surface at different concentrations, but not on clay minerals. Linear combination fitting of NEXAFS spectra indicates that this adsorbed P is mainly a mixture of orthophosphate and organic P compounds. By combining atomic force microscopy (AFM) images with STXM-generated C and Fe distribution maps, we show that the Fe oxide surfaces were fully coated with organic matter. In contrast, clay minerals revealed a much lower C signal. The C NEXAFS spectra taken on the Fe oxides had a substantial contribution of carboxylic C, aliphatic C, and O-alkyl C, which is a composition clearly different from pure adsorbed EPS or aromatic-rich lignin-derived compounds. Our data show that inner-sphere P-O-Fe bonds are important for the association of Fe oxides with soil organic matter. In the Bg horizon, carboxyl groups and orthophosphate compete with the organic P compounds for adsorption sites.
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Affiliation(s)
- Karin Eusterhues
- Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany.
| | - Jürgen Thieme
- NSLS II, Brookhaven National Laboratory, Upton, NY-11973, USA
| | - Sneha Narvekar
- Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany
| | - Tohru Araki
- Diamond Light Source, Didcot, OX11 0DE, United Kingdom
| | | | | | - Tom Regier
- Canadian Light Source Inc., Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Jian Wang
- Canadian Light Source Inc., Saskatoon, Saskatchewan S7N 5A8, Canada
| | - Johann Lugmeier
- Technical University of Munich, TUM School of Life Sciences, Department of Life Science Systems, Soil Science, Emil-Ramann-Str. 2, 85354 Freising, Germany
| | - Carmen Höschen
- Technical University of Munich, TUM School of Life Sciences, Department of Life Science Systems, Soil Science, Emil-Ramann-Str. 2, 85354 Freising, Germany
| | - Tim Mansfeldt
- Department of Geosciences, Institute of Geography, University of Cologne, Germany
| | - Kai Uwe Totsche
- Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena, Burgweg 11, 07749 Jena, Germany
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Tofoni A, Tavani F, Persson I, D'Angelo P. P K-Edge XANES Calculations of Mineral Standards: Exploring the Potential of Theoretical Methods in the Analysis of Phosphorus Speciation. Inorg Chem 2023. [PMID: 37385975 DOI: 10.1021/acs.inorgchem.3c01346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Phosphorus K-edge X-ray absorption near-edge structure (XANES) spectroscopy is a technique routinely employed in the qualitative and quantitative analysis of phosphorus speciation in many scientific fields. The data analysis is, however, often performed in a qualitative manner, relying on linear combination fitting protocols or simple comparisons between the experimental data and the spectra of standards, and little quantitative structural and electronic information is thus retrieved. Herein, we report a thorough theoretical investigation of P K-edge XANES spectra of NaH2PO4·H2O, AlPO4, α-Ti(HPO4)2·H2O, and FePO4·2H2O showing excellent agreement with the experimental data. We find that different coordination shells of phosphorus, up to a distance of 5-6 Å from the photoabsorber, contribute to distinct features in the XANES spectra. This high structural sensitivity enables P K-edge XANES spectroscopy to even distinguish between nearly isostructural crystal phases of the same compound. Additionally, we provide a rationalization of the pre-edge transitions observed in the spectra of α-Ti(HPO4)2·H2O and FePO4·2H2O through density of states calculations. These pre-edge transitions are found to be enabled by the covalent mixing of phosphorus s and p orbitals and titanium or iron d orbitals, which happens even though neither metal ion is directly bound to phosphorus in the two systems.
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Affiliation(s)
- Alessandro Tofoni
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Francesco Tavani
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Ingmar Persson
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Paola D'Angelo
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
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Prietzel J, Krüger J, Kaiser K, Amelung W, Bauke SL, Dippold MA, Kandeler E, Klysubun W, Lewandowski H, Löppmann S, Luster J, Marhan S, Puhlmann H, Schmitt M, Siegenthaler MB, Siemens J, Spielvogel S, Willbold S, Wolff J, Lang F. Soil phosphorus status and P nutrition strategies of European beech forests on carbonate compared to silicate parent material. BIOGEOCHEMISTRY 2022; 158:39-72. [PMID: 35221401 PMCID: PMC8860963 DOI: 10.1007/s10533-021-00884-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
UNLABELLED Sustainable forest management requires understanding of ecosystem phosphorus (P) cycling. Lang et al. (2017) [Biogeochemistry, https://doi.org/10.1007/s10533-017-0375-0] introduced the concept of P-acquiring vs. P-recycling nutrition strategies for European beech (Fagus sylvatica L.) forests on silicate parent material, and demonstrated a change from P-acquiring to P-recycling nutrition from P-rich to P-poor sites. The present study extends this silicate rock-based assessment to forest sites with soils formed from carbonate bedrock. For all sites, it presents a large set of general soil and bedrock chemistry data. It thoroughly describes the soil P status and generates a comprehensive concept on forest ecosystem P nutrition covering the majority of Central European forest soils. For this purpose, an Ecosystem P Nutrition Index (ENI P ) was developed, which enabled the comparison of forest P nutrition strategies at the carbonate sites in our study among each other and also with those of the silicate sites investigated by Lang et al. (2017). The P status of forest soils on carbonate substrates was characterized by low soil P stocks and a large fraction of organic Ca-bound P (probably largely Ca phytate) during early stages of pedogenesis. Soil P stocks, particularly those in the mineral soil and of inorganic P forms, including Al- and Fe-bound P, became more abundant with progressing pedogenesis and accumulation of carbonate rock dissolution residue. Phosphorus-rich impure, silicate-enriched carbonate bedrock promoted the accumulation of dissolution residue and supported larger soil P stocks, mainly bound to Fe and Al minerals. In carbonate-derived soils, only low P amounts were bioavailable during early stages of pedogenesis, and, similar to P-poor silicate sites, P nutrition of beech forests depended on tight (re)cycling of P bound in forest floor soil organic matter (SOM). In contrast to P-poor silicate sites, where the ecosystem P nutrition strategy is direct biotic recycling of SOM-bound organic P, recycling during early stages of pedogenesis on carbonate substrates also involves the dissolution of stable Ca-Porg precipitates formed from phosphate released during SOM decomposition. In contrast to silicate sites, progressing pedogenesis and accumulation of P-enriched carbonate bedrock dissolution residue at the carbonate sites promote again P-acquiring mechanisms for ecosystem P nutrition. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10533-021-00884-7.
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Affiliation(s)
- Jörg Prietzel
- Chair of Soil Science, School of Life Sciences Weihenstephan, Technical University Munich, Emil-Ramann-Str. 2, 85354 Freising, Germany
| | - Jaane Krüger
- Professur für Bodenökologie, Albert-Ludwigs-Universität Freiburg, Bertoldstr. 17, 79085 Freiburg, Germany
| | - Klaus Kaiser
- Soil Sciences, Martin Luther University Halle Wittenberg, Von-Seckendorff-Platz 3, 06120 Halle (Saale), Germany
| | - Wulf Amelung
- Institute für Nutzpflanzenwissenschaften und Ressourcenschutz (INRES), Allgemeine Bodenkunde und Bodenökologie, Universität Bonn, Nussallee 13, 53115 Bonn, Germany
- Institut für Bio- und Geowissenschaften – IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Sara L. Bauke
- Institute für Nutzpflanzenwissenschaften und Ressourcenschutz (INRES), Allgemeine Bodenkunde und Bodenökologie, Universität Bonn, Nussallee 13, 53115 Bonn, Germany
| | - Michaela A. Dippold
- Biogeochemie der Agrarökosysteme, Georg-August-Universität Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Ellen Kandeler
- Institut für Bodenkunde und Standortslehre, Fachgebiet Bodenbiologie, Universität Hohenheim, Emil-Wolff-Str. 27, 70593 Stuttgart, Germany
| | - Wantana Klysubun
- Synchrotron Light Research Institute, 111 Moo 6 University Avenue, Muang District, Nakhon Ratchasima, 30000 Thailand
| | - Hans Lewandowski
- Institut für Bio- und Geowissenschaften – IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Sebastian Löppmann
- Biogeochemie der Agrarökosysteme, Georg-August-Universität Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
- Institut für Pflanzenernährung und Bodenkunde, Christian-Albrechts-Universität zu Kiel, Abteilung Bodenkunde, Hermann-Rodewaldstr. 2, 24118 Kiel, Germany
| | - Jörg Luster
- Forest Soils and Biogeochemistry, Swiss Federal Research Institute WSL, 8903 Birmensdorf, Switzerland
| | - Sven Marhan
- Institut für Bodenkunde und Standortslehre, Fachgebiet Bodenbiologie, Universität Hohenheim, Emil-Wolff-Str. 27, 70593 Stuttgart, Germany
| | - Heike Puhlmann
- Forstliche Versuchs- und Forschungsanstalt Baden-Württemberg, Wonnhaldestr. 4, 79100 Freiburg, Germany
| | - Marius Schmitt
- Biogeochemie der Agrarökosysteme, Georg-August-Universität Göttingen, Büsgenweg 2, 37077 Göttingen, Germany
| | - Maja B. Siegenthaler
- Institute of Agricultural Sciences, ETH Zurich, Eschikon 33, 8315 Lindau, Switzerland
| | - Jan Siemens
- Professur für Bodenressourcen und Bodenschutz, Institut für Bodenkunde und Bodenerhaltung, Interdisziplinäres Forschungszentrum (iFZ), Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 26-32, 35392 Gießen, Germany
| | - Sandra Spielvogel
- Institut für Pflanzenernährung und Bodenkunde, Christian-Albrechts-Universität zu Kiel, Abteilung Bodenkunde, Hermann-Rodewaldstr. 2, 24118 Kiel, Germany
| | - Sabine Willbold
- Institut für Bio- und Geowissenschaften – IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52428 Jülich, Germany
| | - Jan Wolff
- Institute für Nutzpflanzenwissenschaften und Ressourcenschutz (INRES), Allgemeine Bodenkunde und Bodenökologie, Universität Bonn, Nussallee 13, 53115 Bonn, Germany
| | - Friederike Lang
- Professur für Bodenökologie, Albert-Ludwigs-Universität Freiburg, Bertoldstr. 17, 79085 Freiburg, Germany
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Vogel C, Sekine R, Huang J, Steckenmesser D, Steffens D, Huthwelker T, Borca CN, Pradas Del Real AE, Castillo-Michel H, Adam C. Effects of a nitrification inhibitor on nitrogen species in the soil and the yield and phosphorus uptake of maize. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 715:136895. [PMID: 32007883 DOI: 10.1016/j.scitotenv.2020.136895] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) resource availability is declining and the efficiency of applied nutrients in agricultural soils is becoming increasingly important. This is especially true for P fertilizers from recycled materials, which often have low plant availability. Specific co-fertilization with ammonium can enhance P plant availability in soils amended with these P fertilizers, and thus the yield of plants. To investigate this effect, we performed a pot experiment with maize in slightly acidic soil (pH 6.9) with one water-soluble (triple superphosphate [TSP]) and two water-insoluble (sewage sludge-based and hyperphosphate [Hyp]) P fertilizers and an ammonium sulfate nitrate with or without a nitrification inhibitor (NI). The dry matter yield of maize was significantly increased by the NI with the Hyp (from 14.7 to 21.5 g/pot) and TSP (from 40.0 to 45.4 g/pot) treatments. Furthermore, P uptake was slightly increased in all three P treatments with the NI, but not significantly. Olsen-P extraction and P K-edge micro-X-ray absorption near-edge structure (XANES) spectroscopy showed that apatite-P of the water-insoluble P fertilizers mobilized during the plant growth period. In addition, novel nitrogen (N) K-edge micro-XANES spectroscopy and the Mogilevkina method showed that the application of an NI increased the fixation of ammonium in detectable hot spots in the soil. Thus, the delay in the nitrification process by the NI and the possible slow-release of temporarily fixed ammonium in the soil resulted in a high amount of plant available ammonium in the soil solution. This development probably decreases the rhizosphere pH due to release of H+ by plants during ammonium uptake, which mobilizes phosphorus in the amended soil and increases the dry matter yield of maize. This is especially important for water-insoluble apatite-based P fertilizers (conventional and recycled), which tend to have poor plant availability.
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Affiliation(s)
- Christian Vogel
- Division 4.4 Thermochemical Residues Treatment and Resource Recovery, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany.
| | - Ryo Sekine
- Environmental Futures Research Institute, Gold Coast Campus, Griffith University, QLD 4222, Australia; Centre for Ecology & Hydrology, Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB, United Kingdom
| | - Jianyin Huang
- Division of Information Technology, Engineering and Environment, School of Natural and Built Environment, Mason Lakes Campus, University of South Australia, Adelaide, SA 5095, Australia
| | - Daniel Steckenmesser
- Institute of Plant Nutrition, Research Center for Biosystems, Land Use and Nutrition, Justus-Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Diedrich Steffens
- Institute of Plant Nutrition, Research Center for Biosystems, Land Use and Nutrition, Justus-Liebig University Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany
| | - Thomas Huthwelker
- Paul Scherrer Institute, Swiss Light Source, 5232 Villigen PSI, Switzerland
| | - Camelia N Borca
- Paul Scherrer Institute, Swiss Light Source, 5232 Villigen PSI, Switzerland
| | - Ana E Pradas Del Real
- ESRF - The European Synchrotron, ID21, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Hiram Castillo-Michel
- ESRF - The European Synchrotron, ID21, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Christian Adam
- Division 4.4 Thermochemical Residues Treatment and Resource Recovery, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, 12205 Berlin, Germany
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A Probabilistic Approach to Phosphorus Speciation of Soils Using P K-edge XANES Spectroscopy with Linear Combination Fitting. SOIL SYSTEMS 2020. [DOI: 10.3390/soilsystems4020026] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A common technique to quantitatively estimate P speciation in soil samples is to apply linear combination fitting (LCF) to normalized P K-edge X-ray absorption near-edge structure (XANES) spectra. Despite the rapid growth of such applications, the uncertainties of the fitted weights are still poorly known. Further, there are few reports to what extent the LCF standards represent unique end-members. Here, the co-variance between 34 standards was determined and their significance for LCF was discussed. We present a probabilistic approach for refining the calculation of LCF weights based on Latin hypercube sampling of normalized XANES spectra, where the contributions of energy calibration and normalization to fit uncertainty were considered. Many of the LCF standards, particularly within the same standard groups, were strongly correlated. This supports an approach in which the LCF standards are grouped. Moreover, adsorbed phytates and monetite were well described by other standards, which puts into question their use as end-members in LCF. Use of the probabilistic method resulted in uncertainties ranging from 2 to 11 percentage units. Uncertainties in the calibrated energy were important for the LCF weights, particularly for organic P, which changed with up to 2.7 percentage units per 0.01 eV error in energy. These results highlight the necessity of careful energy calibration and the use of frequent calibration checks. The probabilistic approach, in which at least 100 spectral variants are analyzed, improves our ability to identify the most likely P compounds present in a soil sample, and a procedure for this is suggested in the paper.
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Ippolito JA, Bjorneberg DL, Blecker SW, Massey MS. Mechanisms Responsible for Soil Phosphorus Availability Differences between Sprinkler and Furrow Irrigation. JOURNAL OF ENVIRONMENTAL QUALITY 2019; 48:1370-1379. [PMID: 31589736 DOI: 10.2134/jeq2019.01.0016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
From a historical perspective, human-induced soil erosion and resulting soil phosphorus (P) losses have likely occurred for thousands of years. In modern times, erosion risk and off-site P transport can be decreased if producers convert from furrow to sprinkler irrigation, but conversion may alter nutrient dynamics. Our study goal was to determine soil P dynamics in furrow- (in place since the early 1900s) versus sprinkler-irrigated (installed within the last decade) soils from four paired producer fields in Idaho. Furrow- and sprinkler-irrigated soils (0-5 cm; Aridisols) contained on average 38 and 20 mg kg of Olsen-extractable P (i.e., plant-available P), respectively; extractable P values over 40 mg kg limit Idaho producers to P application based on crop uptake only. Soil samples were also analyzed using a modified Hedley extraction. Furrow-irrigated soils contained greater inorganic P concentrations in the soluble+aluminum (Al)-bound+iron (Fe)-bound, occluded, and amorphous Fe-bound pools. Phosphorus -edge X-ray absorption near-edge structure (XANES) spectroscopy was unable to detect Fe-associated P but indicated greater amounts of apatite-like or octacalcium phosphate-like P in furrow-irrigated producer soils, while sprinkler-irrigated fields had lower amounts of apatite-like P and greater proportions of P bound to calcite. Findings from a controlled USDA-ARS sprinkler- versus furrow-irrigation study suggested that changes in P dynamics occur slowly over time, as few differences were observed. Overall findings suggest that Fe redox chemistry or changes in calcium (Ca)-associated P in flooded conditions altered P availability under furrow irrigation, even in aridic, calcareous soils, contributing to greater Olsen-extractable P concentrations in long-term furrow-irrigated fields.
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