Reports by Heike Knicker
How Important is "Black Nitrogen" for C-Sequestration in Soils?.
Molecular Characterization of Black Carbon from Reference Soils and Fire Affected Soils by Pyrolytic, Spectroscopic and Thermogravimetric Techniques.
The speciation of sulfur in bulk soil differs from the S speciation in humic acid, fulvic acid, and most particle size fractions.