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Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites

Examination of organic pollutants in groundwaters should also consider the source of the pollution, which is often a solid matrix such as soil, landfill waste, or sediment. This premise should be viewed alongside the growing trend towards field-based characterisation of contaminated sites for reason...

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Detalles Bibliográficos
Autores principales: Rigou, Peggy, Setford, Steven John, Saini, Selwayan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: TheScientificWorldJOURNAL 2002
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009299/
https://www.ncbi.nlm.nih.gov/pubmed/12805963
http://dx.doi.org/10.1100/tsw.2002.205
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author Rigou, Peggy
Setford, Steven John
Saini, Selwayan
author_facet Rigou, Peggy
Setford, Steven John
Saini, Selwayan
author_sort Rigou, Peggy
collection PubMed
description Examination of organic pollutants in groundwaters should also consider the source of the pollution, which is often a solid matrix such as soil, landfill waste, or sediment. This premise should be viewed alongside the growing trend towards field-based characterisation of contaminated sites for reasons of speed and cost. Field-based methods for the extraction of organic compounds from solid samples are generally cumbersome, time consuming, or inefficient. This paper describes the development of a field-based supercritical fluid extraction (SFE) system for the recovery of organic contaminants (benzene, toluene, ethylbenzene, and xylene and polynuclear aromatic hydrocarbons) from soils. A simple, compact, and robust SFE system has been constructed and was found to offer the same extraction efficiency as a well-established laboratory SFE system. Extraction optimisation was statistically evaluated using a factorial analysis procedure. Under optimised conditions, the device yielded recovery efficiencies of >70% with RSD values of 4% against the standard EPA Soxhlet method, compared with a mean recovery efficiency of 48% for a commercially available field-extraction kit. The device will next be evaluated with real samples prior to field deployment.
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spelling pubmed-60092992018-07-04 Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites Rigou, Peggy Setford, Steven John Saini, Selwayan ScientificWorldJournal Short Communication Examination of organic pollutants in groundwaters should also consider the source of the pollution, which is often a solid matrix such as soil, landfill waste, or sediment. This premise should be viewed alongside the growing trend towards field-based characterisation of contaminated sites for reasons of speed and cost. Field-based methods for the extraction of organic compounds from solid samples are generally cumbersome, time consuming, or inefficient. This paper describes the development of a field-based supercritical fluid extraction (SFE) system for the recovery of organic contaminants (benzene, toluene, ethylbenzene, and xylene and polynuclear aromatic hydrocarbons) from soils. A simple, compact, and robust SFE system has been constructed and was found to offer the same extraction efficiency as a well-established laboratory SFE system. Extraction optimisation was statistically evaluated using a factorial analysis procedure. Under optimised conditions, the device yielded recovery efficiencies of >70% with RSD values of 4% against the standard EPA Soxhlet method, compared with a mean recovery efficiency of 48% for a commercially available field-extraction kit. The device will next be evaluated with real samples prior to field deployment. TheScientificWorldJOURNAL 2002-04-19 /pmc/articles/PMC6009299/ /pubmed/12805963 http://dx.doi.org/10.1100/tsw.2002.205 Text en Copyright © 2002 Peggy Rigou et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Short Communication
Rigou, Peggy
Setford, Steven John
Saini, Selwayan
Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title_full Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title_fullStr Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title_full_unstemmed Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title_short Field—Based Supercritical Fluid Extraction of Hydrocarbons at Industrially Contaminated Sites
title_sort field—based supercritical fluid extraction of hydrocarbons at industrially contaminated sites
topic Short Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6009299/
https://www.ncbi.nlm.nih.gov/pubmed/12805963
http://dx.doi.org/10.1100/tsw.2002.205
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