Cited by 129
Hochschule Fresenius
Publishes on Mass Spectrometry Techniques and Applications, Soil Carbon and Nitrogen Dynamics, Ecology and Vegetation Dynamics Studies. 6 papers and 234 citations.
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Six major components of a mixture of the pyrolysis products of deoxyribonucleic acid have been analysed by combined low energy electron impact and collisional activation spectra. The method allowed the assignment of the structures of the different components in the complex mixture without prior separation.
Abstract Properties and composition of 25 soil samples (0.8–51% C org ) were determined by morphology, wet chemistry, CPMAS‐ 13 C‐NMR‐spectroscopy and pyrolysis‐field ionization mass spectrometry (Py‐FIMS). The recovery rate of organic carbon was 102% (±15%). The correlation between the litter compound/humic compound ratio and humification grade, estimated with morphological observations, was strong (r 2 = 0.502 *** ). A typical classification of horizons (L, O, H, Ah+M) with regard to organic compounds (wet chemistry and 13 C‐NMR) was not always significant. The pyrolysis‐mass spectra confirmed and extended on the basis of molecular chemical structures the results of wet chemistry, especially with polysaccharides, nitrogen compounds, lignin, lipids and alkylaromatics (r 2 = 0.818–0.937 *** ). A correlation between the NMR‐aliphatics, the humic compounds isolated by wet chemistry, and the long‐chain aliphatic carbon units in the pyrolysis‐mass spectra was established.