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Title: Determination of volatile organic compounds in groundwater by GC: Comparison between headspace and purge and trap

Abstract

Two methods for determining fuel contamination in groundwaters are compared. The first is based on headspace extraction, while the other utilizes purge and trap. Analyses, in both cases, are made by gas chromatography/flame ionization detection, with benzene, toluene, and xylene isomers as monitoring agents for fuel leaks. When compared, results show satisfactory agreement if one takes into account the high levels of fuel contamination found in samples collected in control wells from a gas station in an urban site. Thus headspace/gas chromatography can be used, as an alternative technique, to monitoring of volatile organic compounds in groundwater. The main advantages when compared to purge and trap/gas chromatography are simplicity, low cost, and automatic sample handling. When a mass spectrometry detector was used, ethylmethylbenzene and trimethylbenzene isomers were detected in the water samples. These compounds could also be used as alternative tracers for fuel leak detection.

Authors:
;  [1]
  1. UFBA, Salvador, Bahia (Brazil). Inst. de Quimica
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
624375
Resource Type:
Journal Article
Journal Name:
Energy Sources
Additional Journal Information:
Journal Volume: 20; Journal Issue: 6; Other Information: PBD: Jul 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 02 PETROLEUM; GROUND WATER; GAS CHROMATOGRAPHY; BENZENE; TOLUENE; XYLENES; OIL SPILLS; GASOLINE SERVICE STATIONS; LEAKS; SAMPLING; COMPARATIVE EVALUATIONS

Citation Formats

Andrade, J.B. de, Paula Pereira, P.A. de, and Silva Lima Oliveira, C da. Determination of volatile organic compounds in groundwater by GC: Comparison between headspace and purge and trap. United States: N. p., 1998. Web. doi:10.1080/00908319808970074.
Andrade, J.B. de, Paula Pereira, P.A. de, & Silva Lima Oliveira, C da. Determination of volatile organic compounds in groundwater by GC: Comparison between headspace and purge and trap. United States. doi:10.1080/00908319808970074.
Andrade, J.B. de, Paula Pereira, P.A. de, and Silva Lima Oliveira, C da. Wed . "Determination of volatile organic compounds in groundwater by GC: Comparison between headspace and purge and trap". United States. doi:10.1080/00908319808970074.
@article{osti_624375,
title = {Determination of volatile organic compounds in groundwater by GC: Comparison between headspace and purge and trap},
author = {Andrade, J.B. de and Paula Pereira, P.A. de and Silva Lima Oliveira, C da},
abstractNote = {Two methods for determining fuel contamination in groundwaters are compared. The first is based on headspace extraction, while the other utilizes purge and trap. Analyses, in both cases, are made by gas chromatography/flame ionization detection, with benzene, toluene, and xylene isomers as monitoring agents for fuel leaks. When compared, results show satisfactory agreement if one takes into account the high levels of fuel contamination found in samples collected in control wells from a gas station in an urban site. Thus headspace/gas chromatography can be used, as an alternative technique, to monitoring of volatile organic compounds in groundwater. The main advantages when compared to purge and trap/gas chromatography are simplicity, low cost, and automatic sample handling. When a mass spectrometry detector was used, ethylmethylbenzene and trimethylbenzene isomers were detected in the water samples. These compounds could also be used as alternative tracers for fuel leak detection.},
doi = {10.1080/00908319808970074},
journal = {Energy Sources},
number = 6,
volume = 20,
place = {United States},
year = {1998},
month = {7}
}