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Journal of Analytical Chemistry

, Volume 73, Issue 3, pp 292–301 | Cite as

Diesel-Range Organics Extraction and Determination in Environmental Samples by Gas Chromatography‒Mass Spectrometry: Headspace Solid Phase Microextraction vs. Solvent Extraction

  • María Balseiro-Romero
  • Carmen Monterroso
Articles
  • 38 Downloads

Abstract

An accurate and sensitive analytical method for the determination of diesel-range organics (DRO) is the basis to monitoring and soil remediation studies. In the present work, the determination of DRO in different water and soil samples was optimized. Solvent extraction procedures, i.e. ultrasonic assisted extraction (USAE) (for water samples) and accelerated solvent extraction (ASE) (for soil samples), and a solvent-free procedure, headspace solid phase microextraction (HS-SPME), were optimized to achieve the highest recoveries for the simultaneous determination of all DRO. One hour of USAE for water samples and ASE of soil samples at 100°C, 2000 psi and two extraction cycles lead to analytical recoveries of 70‒100%. Using HS-SPME, 30 min of incubation at 90°C were sufficient to achieve analytical recoveries up to 90% for water and soil samples. HS-SPME enables higher preconcentration factors, which makes this method more appropriate for samples with trace DRO concentrations.

Keywords

diesel-range organics ultrasonic assisted extraction accelerated solvent extraction HS-SPME water and soil samples 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Department of Soil Science and Agricultural Chemistry, Centre for Research in Environmental Technologies (CRETUS)Universidade de Santiago de CompostelaSantiago de CompostelaSpain

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