Spectromicroscopy of soil colloids

C. Schmidt*, J. Thieme, U. Neuhäusler, C. Jacobsen, B. Kaulich, M. Salomé, J. Susini

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations

Abstract

A soil with a high organic content, a calcaric phaeozem, has been imaged in a hydrated state using the Stony Brook scanning transmission X-ray microscope at the NSLS, Brookhaven, USA. This experiment has been performed at the carbon K absorption edge to determine the distribution of organic matter within this soil. Spectromicroscopic methods using the known spectra of humics are helping to distinguish between different kinds of carbon in the sample. In addition, a marsh soil from Northern Germany has been analyzed at the sulfur K-absorption edge with the scanning X-ray microscope at the ESRF (ID 21), Grenoble, France. This soil contains a variety of sulfur containing components, which are attached to the soil colloids. A major source of these components is the microbial activity. In this soil it is possible to identify spectroscopically amino acids like methionin and cysteine and proteins, which are built up from those molecules, and inorganic components like sulfates and sulfides.

Original languageEnglish (US)
Pages (from-to)405-408
Number of pages4
JournalJournal De Physique. IV : JP
Volume104
DOIs
StatePublished - Jan 1 2003
Event7th International Conference on X-Ray Microscopy - Grenoble, France
Duration: Jul 28 2002Aug 2 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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