EDAFOLOGÍA, VOL 15. (1,1 2, 3), PP 169-192 208
METODOLOGÍAS DE ANÁLISIS Y CARACTERIZACIÓN DE HEXACLOROCICLOHEXANO
EN EL ENTORNO DEL POLÍGONO INDUSTRIAL DE TORNEIROS (PORRIñO-PONTEVEDRA)
E. Concha Graña1; M. Barriada Pereira1; I. Turnes Carou1; M.J. González Castro1; S. Muniategui Lorenzo1*; P. López Mahía1,2; D. Prada Rodríguez1, 2
1Departamento de Química Analítica. Universidad de A Coruña,
Campus da Zapateira, E-15071 A Coruña, España 2Instituto Universitario de
Medio Ambiente. Universidad de A Coruña. Liáns, Oleiros, 15179, España.
(*autor para correspondencia: E-mail: smuniat@udc.es)
Lindane (g-hexachlorociclohexane) and its isomers are toxic and persistent compounds, and for this reason has been restricted by the most recent legislation, and its presence in different environmental compartments its regulated. In this work we propose and compare different sample handling procedures for the determination of these compounds in liquid samples and solid samples: soild and vegetation samples. For liquid samples analysis, the SPE, SPME and MLLE methods were compared. To the analysis of solid matrices different extraction techniques were also proposed: soxhlet, US, microwave assited extraction and pressurised liquid extraction. All the methods proposed provides good recoveries, precision and sensitivity, and therefore the selection of the most adequate method depends on the characteristics of the samples to be analysed. An example of application of the methods to the analysis of an area contaminated by hexachlorociclohexane was also included.
Keywords: Hexachlorociclohexane, extraction methods, lindane, PLE, MAE, SPME,
SPE, MLLE.