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The Composition of Humic Acids Separated from Compost Prepared from Biologically Degradable Waste

Humic substances (humic acids and fulvoacids) were studied in compost produced from biologically degradable waste. Pyrolytic gas chromatography with mass spectrometrical detection was used for determination of arenes (toluene, styrene, p-xylene, benzene and ethylbenzene) in the pyrolysate. An influence of composition of biologically degradable waste on humification process in composts can be evaluated from data on amount and ratios of humic acids and fulvoacids.