Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

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Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy. / Moens, Claudia; Lombi, Enzo; Howard, Daryl L. et al.
in: Environmental science & technology , Jahrgang 58.2024, Nr. 1, 18.12.2023, S. 440-448.

Publikationen: Beitrag in FachzeitschriftArtikelForschung(peer-reviewed)

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@article{f2320b7adbe6469291d56a9ee699f26e,
title = "Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy",
abstract = "A novel binding layer (BL) as part of the diffusive gradients in thin films (DGT) technique was developed for the two-dimensional visualization and quantification of labile phosphorus (P) in soils. This BL was designed for P detection by synchrotron-based X-ray fluorescence microscopy (XFM). It differs from the conventional DGT BL as the hydrogel is eliminated to overcome the issue that the fluorescent X-rays of P are detected mainly from shallow sample depths. Instead, the novel design is based on a polyimide film (Kapton) onto which finely powdered titanium dioxide-based P binding agent (Metsorb) was applied, resulting in superficial P binding only. The BL was successfully used for quantitative visualization of P diffusion from three conventional P fertilizers applied to two soils. On a selection of samples, XFM analysis was confirmed by quantitative laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The XFM method detected significant differences in labile P concentrations and P diffusion zone radii with the P fertilizer incubation, which were explained by soil and fertilizer properties. This development paves the way for fast XFM analysis of P on large DGT BLs to investigate in situ diffusion of labile P from fertilizers and to visualize large-scale P cycling processes at high spatial resolution.",
author = "Claudia Moens and Enzo Lombi and Howard, {Daryl L.} and Stefan Wagner and Payne, {Justin L.} and Kopittke, {Peter M.} and Doolette, {Casey L.}",
note = "Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",
year = "2023",
month = dec,
day = "18",
doi = "10.1021/acs.est.3c06237",
language = "English",
volume = "58.2024",
pages = "440--448",
journal = "Environmental science & technology ",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "1",

}

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TY - JOUR

T1 - Mapping Phosphorus Availability in Soil at a Large Scale and High Resolution Using Novel Diffusive Gradients in Thin Films Designed for X-ray Fluorescence Microscopy

AU - Moens, Claudia

AU - Lombi, Enzo

AU - Howard, Daryl L.

AU - Wagner, Stefan

AU - Payne, Justin L.

AU - Kopittke, Peter M.

AU - Doolette, Casey L.

N1 - Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.

PY - 2023/12/18

Y1 - 2023/12/18

N2 - A novel binding layer (BL) as part of the diffusive gradients in thin films (DGT) technique was developed for the two-dimensional visualization and quantification of labile phosphorus (P) in soils. This BL was designed for P detection by synchrotron-based X-ray fluorescence microscopy (XFM). It differs from the conventional DGT BL as the hydrogel is eliminated to overcome the issue that the fluorescent X-rays of P are detected mainly from shallow sample depths. Instead, the novel design is based on a polyimide film (Kapton) onto which finely powdered titanium dioxide-based P binding agent (Metsorb) was applied, resulting in superficial P binding only. The BL was successfully used for quantitative visualization of P diffusion from three conventional P fertilizers applied to two soils. On a selection of samples, XFM analysis was confirmed by quantitative laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The XFM method detected significant differences in labile P concentrations and P diffusion zone radii with the P fertilizer incubation, which were explained by soil and fertilizer properties. This development paves the way for fast XFM analysis of P on large DGT BLs to investigate in situ diffusion of labile P from fertilizers and to visualize large-scale P cycling processes at high spatial resolution.

AB - A novel binding layer (BL) as part of the diffusive gradients in thin films (DGT) technique was developed for the two-dimensional visualization and quantification of labile phosphorus (P) in soils. This BL was designed for P detection by synchrotron-based X-ray fluorescence microscopy (XFM). It differs from the conventional DGT BL as the hydrogel is eliminated to overcome the issue that the fluorescent X-rays of P are detected mainly from shallow sample depths. Instead, the novel design is based on a polyimide film (Kapton) onto which finely powdered titanium dioxide-based P binding agent (Metsorb) was applied, resulting in superficial P binding only. The BL was successfully used for quantitative visualization of P diffusion from three conventional P fertilizers applied to two soils. On a selection of samples, XFM analysis was confirmed by quantitative laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The XFM method detected significant differences in labile P concentrations and P diffusion zone radii with the P fertilizer incubation, which were explained by soil and fertilizer properties. This development paves the way for fast XFM analysis of P on large DGT BLs to investigate in situ diffusion of labile P from fertilizers and to visualize large-scale P cycling processes at high spatial resolution.

UR - http://www.scopus.com/inward/record.url?scp=85180952821&partnerID=8YFLogxK

U2 - 10.1021/acs.est.3c06237

DO - 10.1021/acs.est.3c06237

M3 - Article

VL - 58.2024

SP - 440

EP - 448

JO - Environmental science & technology

JF - Environmental science & technology

SN - 0013-936X

IS - 1

ER -