Analysis of benzene, toluene, ethylbenzene and xylenes in soils by headspace and gas chromatography/flame ionization detector

Analysis of benzene, toluene, ethylbenzene and xylenes in soils by headspace and gas chromatography/flame ionization detector

Authors

  • Rafael Augusto Melquiades Universidade Estadual de Londrina
  • Ilza Lobo Universidade Estadual de Londrina
  • Carmen Luísa Barbosa Guedes Universidade Estadual de Londrina
  • Jurandir Pereira Pinto Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0375.2006v27n2p113

Keywords:

BTEX, Headspace, GC/FID, Soil.

Abstract

The constituents of gasoline: benzene, toluene, ethylbenzene and xylenes (BTEX) are frequently found in soils due to leaks in fuel storage tanks and they present chronic toxicity. In this work it was developed and validated a methodology of BTEX analysis in soil by gas chromatography/ flame ionization detector and static headspace. The recovery of BTEX in soil samples was evaluated using soils with different textures (sandy and loamy). The analysis method showed good resolution, in a low time of analysis (less than 30 minutes). Limits of quantification of 0.05 mg Kg¯¹ soil for benzene, toluene, ethylbenzene and xylenes are below the guiding values that range from 0.15 to 95 mg Kg¯¹ soil, established to determine soil quality. It was verified that the methodology enables the use of this method for BTEX analysis of soil samples for passive environmental identification of gas stations.

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Author Biographies

Rafael Augusto Melquiades, Universidade Estadual de Londrina

Aluno do Curso de Química – UEL - Londrina.

Ilza Lobo, Universidade Estadual de Londrina

Docentes do Departamento de Química – CCE – Universidade Estadual de Londrina, Londrina.

Carmen Luísa Barbosa Guedes, Universidade Estadual de Londrina

Docentes do Departamento de Química – CCE – Universidade Estadual de Londrina, Londrina.

Jurandir Pereira Pinto, Universidade Estadual de Londrina

Técnico do Departamento de Química – CCE – Universidade Estadual de Londrina, Londrina.

Published

2006-12-15

How to Cite

Melquiades, R. A., Lobo, I., Guedes, C. L. B., & Pinto, J. P. (2006). Analysis of benzene, toluene, ethylbenzene and xylenes in soils by headspace and gas chromatography/flame ionization detector. Semina: Ciências Exatas E Tecnológicas, 27(2), 113–120. https://doi.org/10.5433/1679-0375.2006v27n2p113

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Original Article

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