Szukana fraza: [Abstract = "Sewage sludges were stored under aerobic conditions for 12 weeks. At the same time the sewage sludges with the added sodium azide, in order to deactivate the microorganisms \(abiotic samples\), were also stored. Gas chromatography\-mass spectrometry was used to qualify and quantify PAHs in 2\-week intervals."]

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