Abstract
Microextraction preconcentration of impurities with ultrasonic dispersion of extractant exceeds in efficiency drop microextraction and microextraction with dispersion on auxiliary component. Capillary gathering of an extractant simplifies its selection and eliminates the losses of an extract connected with its evaporation. Limits of detection of esters of о - phthalic acid are 10 -5 -10 -6 mg/l which are not conceding to the best world results are reached. Key words: Microextraction concentration, ultrasonic dispersion, capillary gathering of a extraction solvent, detection limits (Russian) DOI: http://dx.doi.org/10.15826/analitika.2013.17.1.011 V.A. Krylov 1,2 , V.V. Volkova 1 , O.A. Saveleva 1 1 N.I. Lobachevsky Nizhny Novgorod State University, Nizhny Novgorod, Russian Federation 2 G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences , Nizhny Novgorod, Russian Federation
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