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Title: Determination of polychlorinated biphenyls by liquid chromatography following cloud-point extraction
Authors: Eiguren Fernández, A.
Sosa Ferrera, Z. 
Santana Rodríguez, J. J. 
UNESCO Clasification: 2301 química analítica
Keywords: Cloud-point
Brij 30
Brij 97
Polychlorinated biphenyls
Liquid chromatography
Issue Date: 1998
Publisher: 0003-2670
Journal: Analytica chimica acta (Print) 
Abstract: In this study, a new methodology, based on the `cloud-point phenomenon' of non-ionic surfactants, is applied for the extraction and preconcentration of polychlorinated biphenyls (PCBs). Once the PCBs are extracted from the solution, they are determined by liquid chromatography. The non-ionic surfactants used are polyoxyethylene 4-lauryl ether (Brij 30) and polyoxyethylene-10-oleyl ether (Brij 97). In this study, the optimum conditions for the preconcentration and determination of PCBs have been established and the method has been applied to determine PCBs in sea-water samples.
ISSN: 0003-2670
DOI: 10.1016/S0003-2670(97)00618-1
Source: Analytica Chimica Acta [ISSN 0003-2670], v. 358, p. 145-155
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