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Screening method for linear alkylbenzene sulfonates in sediments based on water Soxhlet extraction assisted by focused microwaves with on-line preconcentration/derivatization/detection.

Authors
  • Morales-Muñoz, S
  • Luque-García, J L
  • de Castro, Luque
Type
Published Article
Journal
Journal of Chromatography A
Publisher
Elsevier
Publication Date
Feb 13, 2004
Volume
1026
Issue
1-2
Pages
41–46
Identifiers
PMID: 14763731
Source
Medline
License
Unknown

Abstract

A screening method for linear alkylbenzene sulfonates (LAS) in sediments has been developed. Soxhlet extraction with water assisted by focused microwaves provides recoveries better (>90%) than obtained by conventional Soxhlet extraction (70-80%). Coupling of the extractor with an on-line preconcentration/derivatization/detection manifold through a flow injection (FI) interface allows a fully automated screening approach. A yes/no answer can be obtained in less than 2 h (for the whole analytical process), a short time compared with the at least 24 h of Soxhlet extraction (without final detection). Due to the use of water as leaching agent, the proposed method is environmentally friendly.

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