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International Journal of Analytical Chemistry
Volume 2009 (2009), Article ID 404836, 6 pages
http://dx.doi.org/10.1155/2009/404836
Research Article

Trace Determination of Linear Alkylbenzene Sulfonates: Application in Artificially Polluted Soil—Carrots System

1Laboratoire de Chimie Agro-Industrielle (LCA), Ecole Nationale Supèrieure des Ingénieurs en Arts Chimiques Et Technologiques (INP, ENSIACET), Université de Toulouse, 4 Allées Emile Monso, 31029 Toulouse, France
2Laboratoire de Chimie Agro-Industrielle (LCA), Institut National de la Recherche Agronomique (INRA), 31029 Toulouse, France
3Véolia Environnement, Direction de la Recherche, du Développement et de la Technologie, 36 rue de Liège, 75008 Paris, France
4Laboratoire d’Ecologie Fonctionnelle, Ecole Nationale Supèrieure Agronomique de Toulouse (ENSAT), Avenue de l’Agrobiopole, BP 32607 Auzeville tolosane, 31326 Castanet-Tolosan, France
5Laboratoire de Chimie et Biochimie des Interactions, Centre Universitaire Jean-François Champollion, Place de Verdun, 81012 Albi cedex 9, France

Received 4 November 2008; Accepted 6 April 2009

Academic Editor: Peter S. Haglund

Copyright © 2009 Caroline Sablayrolles et al. 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.

Abstract

Surfactants are widely used in household and industrial products. The risk of incorporation of linear alkylbenzene sulfonates (LAS) from biosolids, wastewater, and fertilizers land application to the food chain is being assessed at present by the European Union. In the present work, a complete analytical method for LAS trace determination has been developed and successfully applied to LAS (C10–C13) uptake in carrot plants used as model. These carrots were grown in soil with the trace organics compounds added directly into the plant containers in pure substances form. LAS trace determination ( g  dry matter) in carrots samples was achieved by Soxtec apparatus and high-performance liquid chromatography-fluorescence detection. The methodology developed provides LAS determination at low detection limits (5  g  dry matter) for carrot sample (2 g dry matter) with good recoveries rate (>90%). Transfer of LAS has been followed into the various parts of the carrot plant. LAS are generally found in the carrot leaves and percentage transfer remains very low (0.02%).