Environmental Monitoring and Assessment

, Volume 15, Issue 1, pp 13–24 | Cite as

GC-MS identification of gaseous volatiles in wastewater

  • Lawrence C. C. Koe
  • N. C. Tan


Gaseous volatiles from wastewater samples taken from a local sewage treatment plant were air-stripped and trapped onto Tenax GC. These volatiles were then thermally desorbed and subsequently analyzed using a gas chromatograph coupled to a mass spectrometer (GC-MS). The results show that saturated aliphatic and aromatic hydrocarbons were the most dominant compounds found in the sewage gaseous volatiles. Other compounds found were chlorinated hydrocarbons, organic acids, sulfides and phenols. A wide variety of gaseous volatiles were found in the raw wastewater, the primary clarifier effluent, the pre-aeration wastewater and the sludge samples. A comparison of the gas chromatograms for the pre- and post-aeration wastewater shows that many odorous gaseous volatiles were removed during the aeration process in the treatment plant.


Wastewater Sludge Hydrocarbon Sewage Treatment Plant 
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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Lawrence C. C. Koe
    • 1
  • N. C. Tan
    • 1
  1. 1.Department of Civil EngineeringNational University of SingaporeSingapore

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