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11 papers found.
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Soft corals form aragonite-precipitated columnar spiculite in mesophotic reefs

Surveys conducted in Eilat’s upper mesophotic coral ecosystem (MCE) revealed protruding columnar calcareous structures with a Sinularia octocoral colony growing atop of each. The current study addressed the hypothesis that these colonies produce spiculites, and sought to determine (a) the spatial occurrence and dimensions of the spiculite-forming colonies and their species...

Fractionation of sulfur (S) in beech (Fagus sylvatica) forest soils in relation to distance from the stem base as useful tool for modeling S biogeochemistry

The investigation of the fractionation of S compounds in forest soils is a powerful tool for interpreting S dynamics and S biogeochemistry in forest ecosystems. Beech stands on high pH (nutrient-rich) sites on Flysch and on low pH (nutrient-poor) sites on Molasse were selected for testing the influence of stemflow, which represents a high input of water and dissolved elements to...

Evaluation strategies and uncertainty calculation of isotope amount ratios measured by MC ICP-MS on the example of Sr

Department of Chemistry, Division of Analytical Chemistry, VIRIS Laboratory, University of Natural Resources and Life Sciences , Vienna, Konrad-Lorenz-Str. 24, 3430 Tulln , Austria 2 Thomas Prohaska This ... Ecogeochemistry with guest editors Thomas Prohaska, Andreas Zitek, and Johanna Irrgeher. Introduction The comparability of results of isotope amount ratio measurements depends on the applied calibration

Applications of isotopes in analytical ecogeochemistry

Applications of Isotopes in Analytical Ecogeochemistry with guest editors Thomas Prohaska , Andreas Zitek, and Johanna Irrgeher 2 Department of Marine Bioanalytical Chemistry, Institute of Coastal Research ... Analysis together with Thomas Prohaska, Johanna Irrgeher and Norbert Jakubowski. Johanna Irrgeher is currently a postdoctoral researcher in the field of analytical chemistry at the Helmholtz Centre for

Spatially resolved analysis of plutonium isotopic signatures in environmental particle samples by laser ablation-MC-ICP-MS

the topical collection Applications of Isotopes in Analytical Ecogeochemistry with guest editors Thomas Prohaska, Andreas Zitek, and Johanna Irrgeher. Introduction Monitoring of environmental

Diffusive gradients in thin films measurement of sulfur stable isotope variations in labile soil sulfate

A diffusive gradient in thin films (DGT) technique, based on a strongly basic anion exchange resin (Amberlite IRA-400), was successfully tested for 34S/32S analysis in labile soil sulfate. Separation of matrix elements (Na, K, and Ca) that potentially cause non-spectral interferences in 34S/32S analysis by MC ICP-MS (multi-collector inductively coupled plasma–mass spectrometry...

MC ICP-MS δ 34SVCDT measurement of dissolved sulfate in environmental aqueous samples after matrix separation by means of an anion exchange membrane

Isotopes in Analytical Ecogeochemistry with guest editors Thomas Prohaska , Andreas Zitek, and Johanna Irrgeher Analysis of 34S/32S of sulfate in rainwater and soil solutions can be seen as a powerful tool

Novel diffusive gradients in thin films technique to assess labile sulfate in soil

A novel diffusive gradients in thin films (DGT) technique for sampling labile soil sulfate was developed, based on a strong basic anion exchange resin (Amberlite IRA-400) for sulfate immobilization on the binding gel. For reducing the sulfate background on the resin gels, photopolymerization was applied instead of ammonium persulfate-induced polymerization. Agarose cross-linked...

High-resolution densitometry and elemental analysis of tropical wood

Key message Understanding the mobility and distribution of chemical elements in wood is necessary to apply dendrochemistry. Crystals are likely stable and could be used to analyze changes in nutrient supply. Abstract Dendrochemistry uses the variation in wood chemical composition to infer about past environmental conditions and possible effects on tree growth. Elemental or...