Soil Organic Matter Management: The Roles of Residue Quality in C Sequestration and N Supply - Sustainable Management of Soil Organic Matter - page 148

2. Simazine: during the thermophilic phase, > 60% of the initial 14 C-
radioactivity was bound to the compost matrix and could not be extracted
with the described methods. The formation of NERs can be due to both
physical entrapment in the matrix and covalent binding of metabolites.
Release of NERs cannot be ruled out, but is most likely to consist of
metabolites rather than simazine, especially with increasing compost

maturity.
3. Pyrene: the amount of NERs increased rapidly during the maturation
phase. The formation of NERs can be attributed both to microbial activity
and to adsorption and ageing mechanisms. Release of NERs during the
experimental period is very unlikely.

Acknowledgements

We would like to thank the Deutsche Bundesstiftung Umwelt for financial
support.

References

Deutsche Forschungsgemeinschaft (1998) Pesticide Bound Residues in Soil .
Workshop. Senate Commission for the Assessment of Chemicals used in
Agriculture. Report 2. Wiley-VCH-Verlag, Weinheim.
Eschenbach, A. (1995) Einfluß von Pleurotus ostreatus, Kompost, Sphingomonas
paucimobilis und der Kontaminationsdauer auf den Verbleib und Abbau
14 C-markierter PAK in Altlastenböden. PhD thesis, University of Marburg,
Germany.
Förstner, U. and van Raaji, E. (1996) Neue Techniken der Kompostierung . Economica
Verlag Bonn.
Hartlieb, N. and Kördel, W. (2000) Dissolved organic matter fractions formed
during composting of municipal biowaste: influence on the partitioning of
14 C-Pyrene. Proceedings of IHSS-9 Conference (in press).
Martens, R. (1982) Concentrations and microbial mineralization of four to six ring
polycyclic aromatic hydrocarbons in composted municipal waste. Chemosphere
11, 761-770.
Weber, B. (1989) Verhalten von 14 C-markierten Umweltchemikalien bei der
Herstellung von Gartenkompost. PhD thesis, University of Munich, Germany.