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Headspace solid phase microextraction (HSSPME) for the determination of volatile and semivolatile pollutants in soils

Abstract

We have investigated the use of headspace solid phase microextraction (HSSPME) as a sample concentration and preparation technique for the analysis of volatile and semivolatile pollutants in soil samples. Soil samples were suspended in solvent and the SPME fibre suspended in the headspace above the slurry. Finally, the fibre was desorbed in the Gas Chromatograph (GC) injection port and the analysis of the samples was carried out. Since the transfer of contaminants from the soil to the SPME fibre involves four separate phases (soil-solvent-headspace and fibre coating), parameters affecting the distribution of the analytes were investigated. Using a well-aged artificially spiked garden soil, different solvents (both organic and aqueous) were used to enhance the release of the contaminants from the solid matrix to the headspace. It was found that simple addition of water is adequate for the purpose of analysing the target volatile organic chemicals (VOCs) in soil. The addition of 1 ml of water to 1 g of soil yielded maximum response. Without water addition, the target VOCs were almost not released from the matrix and a poor response was observed. The effect of headspace volume on response as well as the addition of salt were also investigated. Comparison  More>>
Authors:
Llompart, Maria; [1]  Li, Ken; Fingas, Merv [2] 
  1. Departamento de Quimica Analitica Nutricion y Bromatologia, Facultad de Quimica, Universidad de Santiago de Compostela, E-15706 Santiago de Compostela (Spain)
  2. Emergencies Science Division, Environment Canada, Environmental Technology Centre, 3439 River Road, Ottawa, ON (Canada)
Publication Date:
Feb 08, 1999
Product Type:
Journal Article
Reference Number:
SCA: 540220; 400105; PA: ECN-99:0E0474; EDB-99:026354; SN: 99002060714
Resource Relation:
Journal Name: Talanta; Journal Volume: 48; Journal Issue: 2; Other Information: PBD: 8 Feb 1999
Subject:
54 ENVIRONMENTAL SCIENCES; 40 CHEMISTRY; EXTRACTION; VOLATILE MATTER; SOILS; GAS CHROMATOGRAPHY; FIBERS; SURFACE CONTAMINATION; SOLVENTS; WATER; ACCURACY; DIESEL FUELS; PRESERVATIVES; POLYCYCLIC AROMATIC HYDROCARBONS
OSTI ID:
310609
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: TLNTA2; ISSN 0039-9140; TRN: NL99E0474
Submitting Site:
ECN
Size:
pp. 451-459
Announcement Date:

Citation Formats

Llompart, Maria, Li, Ken, and Fingas, Merv. Headspace solid phase microextraction (HSSPME) for the determination of volatile and semivolatile pollutants in soils. Netherlands: N. p., 1999. Web. doi:10.1016/S0039-9140(98)00263-X.
Llompart, Maria, Li, Ken, & Fingas, Merv. Headspace solid phase microextraction (HSSPME) for the determination of volatile and semivolatile pollutants in soils. Netherlands. doi:10.1016/S0039-9140(98)00263-X.
Llompart, Maria, Li, Ken, and Fingas, Merv. 1999. "Headspace solid phase microextraction (HSSPME) for the determination of volatile and semivolatile pollutants in soils." Netherlands. doi:10.1016/S0039-9140(98)00263-X. https://www.osti.gov/servlets/purl/10.1016/S0039-9140(98)00263-X.
@misc{etde_310609,
title = {Headspace solid phase microextraction (HSSPME) for the determination of volatile and semivolatile pollutants in soils}
author = {Llompart, Maria, Li, Ken, and Fingas, Merv}
abstractNote = {We have investigated the use of headspace solid phase microextraction (HSSPME) as a sample concentration and preparation technique for the analysis of volatile and semivolatile pollutants in soil samples. Soil samples were suspended in solvent and the SPME fibre suspended in the headspace above the slurry. Finally, the fibre was desorbed in the Gas Chromatograph (GC) injection port and the analysis of the samples was carried out. Since the transfer of contaminants from the soil to the SPME fibre involves four separate phases (soil-solvent-headspace and fibre coating), parameters affecting the distribution of the analytes were investigated. Using a well-aged artificially spiked garden soil, different solvents (both organic and aqueous) were used to enhance the release of the contaminants from the solid matrix to the headspace. It was found that simple addition of water is adequate for the purpose of analysing the target volatile organic chemicals (VOCs) in soil. The addition of 1 ml of water to 1 g of soil yielded maximum response. Without water addition, the target VOCs were almost not released from the matrix and a poor response was observed. The effect of headspace volume on response as well as the addition of salt were also investigated. Comparison studies between conventional static headspace (HS) at high temperature (95C) and the new technology HSSPME at room temperature (=20C) were performed. The results obtained with both techniques were in good agreement. HSSPME precision and linearity were found to be better than automated headspace method and HSSPME also produced a significant enhancement in response. The detection and quantification limits for the target VOCs in soils were in the sub-ng g{sup -1} level. Finally, we tried to extend the applicability of the method to the analysis of semivolatiles. For these studies, two natural soils contaminated with diesel fuel and wood preservative, as well as a standard urban dust contaminated with polyaromatic hydrocarbons (PAHs) were tested. Discrimination in the response for the heaviest compounds studied was clearly observed, due to the poor partition in the headspace and to the slow kinetics of all the processes involved in HSSPME}
doi = {10.1016/S0039-9140(98)00263-X}
journal = {Talanta}
issue = {2}
volume = {48}
journal type = {AC}
place = {Netherlands}
year = {1999}
month = {Feb}
}