Determination of volatile organic compounds in river water by solid phase extraction and gas chromatography

M. A. Mottaleb, M. Z. Abedin, M. S. Islam

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A simple, rapid, and reproducible method is described employing solid-phase extraction (SPE) using dichloromethane followed by gas chromatography (GG) with flame ionization detection (FID) for determination of volatile organic compound(VOC) from the Buriganga River water of Bangladesh. The method was applied to detect the benzene, toluene, ethylbenzene, xylene and cumene(BTEXC) in the sample collected from the surface or 15 cm depth of water. Two-hundred ml of n-hexane-pretreated and filtered water samples were applied directly to a C18 SPE column. BTEXC were extracted with dichloromethane and average concentrations were obtained as 0.104 to 0.372 μg/ml. The highest concentration of benzene was found as 0.372 μg/ml with a relative standard deviation (RSD) of 6.2% , and cumene was not detected. Factors influencing SPE e. g., adsorbent types, sample load volume, eluting solvent, headspace and temperatures, were investigated. A cartridge containing a C18 adsorbent and using dichloromethane gave better performance for extraction of BTEXC from water. Average recoveries exceeding 90% could be achieved for cumene at 4°C with a 2.7% RSD.

Original languageEnglish
Pages (from-to)497-501
Number of pages5
JournalJournal of Environmental Sciences
Volume16
Issue number3
StatePublished - 2004

Keywords

  • Environmental analysis
  • River water
  • Solid-phase extraction
  • VOC recoveries

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • General Environmental Science

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