An efficient method for measuring dissolved VOSCs in wastewater using GC-SCD with static headspace technique

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Jing Sun
  • Shihu Hu
  • Keshab Raj Sharma
  • Beatrice Keller-Lehmann
  • Zhiguo Yuan

Detail(s)

Original languageEnglish
Pages (from-to)208-217
Journal / PublicationWater Research
Volume52
Publication statusPublished - 1 Apr 2014
Externally publishedYes

Abstract

Volatile organic sulfur compounds (VOSCs) are important sources of unpleasant odor in wastewater systems. However, the study of VOSCs is usually hindered by their complicated measurement method and highly reactive nature. In this work, a static headspace method utilising gas chromatography (GC) with a sulfur chemiluminescence detector (SCD) was developed to quantitatively analyze VOSCs in wastewater matrices. The method has low detection limits and requires no pre-concentration treatment. Three typical VOSCs, namely methanethiol (MT), dimethyl sulfide (DMS) and dimethyl disulfide (DMDS), were chosen as examples for this study. The calibration curves of all three compounds covering a wide range from 0.5ppb to 500ppb showed good linearity (R2>0.999). The method detection limits (MDL) were 0.08, 0.12 and 0.21ppb for MT, DMS and DMDS, respectively. The reproducibility (relative standard deviation) was approximately 2%. The recovery ratio of MT, DMS and DMDS in spiked wastewater samples were 83±4%, 103±4% and 102±3%, respectively. Sample preservation tests showed that VOSCs in wastewater samples could be preserved in vials without headspace under acidified conditions (pH ~1.1) for at least 24h without significant changes (<1.8ppb). The analysis of real wastewater samples from both a laboratory-scale sewer system and a full-scale sewer pipe demonstrated the suitability of this method for routine wastewater VOSC measurement. © 2013 Elsevier Ltd.

Research Area(s)

  • Gas chromatography (GC), Static headspace technique, Sulfur chemiluminescence detector (SCD), Volatile organic sulfur compounds (VOSCs), Wastewater

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

An efficient method for measuring dissolved VOSCs in wastewater using GC-SCD with static headspace technique. / Sun, Jing; Hu, Shihu; Sharma, Keshab Raj et al.
In: Water Research, Vol. 52, 01.04.2014, p. 208-217.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review