Composition of organic matter in particle size fractionated pig slurry.
Pig slurry is a heterogeneous mixture of different particle sizes that will have different mobility in soil. Therefore, a physically fractionated pig slurry sample was analysed, e.g. using pyrolysis-field ionisation mass spectrometry (Py-FIMS) in an effort to identify relationships between particle size and composition of organic matter. The presumably most mobile fractions in soils (<63 microm) accounted for approximately 50% of slurry dry matter and were dominated by lignins, and N-containing compounds. Sterols were especially abundant in the larger-sized fractions, which corresponds to their reported distribution in soils and surface waters. The averaged molecular masses indicated similarities of fractions <10 microm to aquatic humic substances and increasing content of plant material with increasing particle size. A statistical analysis of the compound class distribution revealed that the analysis of three particle size fractions is essential for the assessment of the composition and properties of slurry constituents.
Aust
Marc-Oliver
MO
University of Trier, FB VI: Geography/Geosciences, Soil Science Section, Campus II, 54286 Trier, Germany. aust@uni-trier.de
Thiele-Bruhn
Sören
S
Eckhardt
Kai-Uwe
KU
Leinweber
Peter
P
D000822:Animal Husbandry / Q000379:methods; D000818:Animals; D001709:Biotechnology / Q000379:methods; D017753:Ecosystem; D004785:Environmental Pollutants / Q000032:analysis*; D006812:Humic Substances / Q000032:analysis; D008372:Manure; D013058:Mass Spectrometry / Q000379:methods; D009068:Movement; D010316:Particle Size; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis; D013552:Swine; D013696:Temperature
D004785:Environmental Pollutants; D006812:Humic Substances; D008372:Manure; D012987:Soil; D012989:Soil Pollutants