Journal
JOURNAL OF SEPARATION SCIENCE
Volume 40, Issue 6, Pages 1301-1309Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201601237
Keywords
dispersive liquid-liquid microextraction; gas chromatography; postoxidative effluents; volatile organonitrogen compounds; wastewater
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Funding
- National Science Center, Warsaw, Poland [DEC-2013/09/D/ST8/03973]
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We present a new procedure for the determination of 32 volatile organonitrogen compounds in samples of industrial effluents with a complex matrix. The procedure, based on dispersive liquid-liquid microextraction followed by gas chromatography with nitrogen-phosphorus and mass spectrometric detection, was optimized and validated. Optimization of the extraction included the type of extraction and disperser solvent, disperser solvent volume, pH, salting out effect, extraction, and centrifugation time. The procedure based on nitrogen-phosphorus detectionwas found to be superior, having lower limits of detection (0.0067-2.29 mu g/mL) and quantitation as well as a wider linear range. The developed procedure was applied to the determination of content of volatile organonitrogen compounds in samples of raw effluents from the production of bitumens in which 13 compounds were identified at concentrations ranging from 0.15 to 10.86 mu g/mL and in samples of effluents treated by various chemical methods.
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