|Kruse, J; Abraham, M; Amelung, W; Baum, C; Bol, R; Kühn, O; Lewandowski, H; Niederberger, J; Oelmann, Y; Rüger, C; Santner, J; Siebers, M; Siebers, N; Spohn, M; Vestergren, J; Vogts, A; Leinweber, P: Innovative methods in soil phosphorus research: a review, Journal of Plant Nutrition and Soil Science, 178, 43-88 (2015), doi:10.1002/jpln.201400327|
Phosphorus (P) is an indispensable element for all life on Earth and, during the past decade, concerns about the future of its global supply have stimulated much research on soil P and method development. This review provides an overview of advanced state-of-the-art methods currently used in soil P research. These involve bulk and spatially resolved spectroscopic and spectrometric P speciation methods (1 and 2D NMR, IR, Raman, Q-TOF MS/MS, high resolution-MS, NanoSIMS, XRF, XPS, (µ)XAS) as well as methods for assessing soil P reactions (sorption isotherms, quantum-chemical modeling, microbial biomass P, enzymes activity, DGT, 33P isotopic exchange, 18O isotope ratios). Required experimental set-ups and the potentials and limitations of individual methods present a guide for the selection of most suitable methods or combinations.