Dispersive liquid-liquid microextraction and liquid chromatographic determination of pentachlorophenol in water

Abstract

A simple and sensitive dispersive liquid-liquid microextraction method for extraction and preconcentration of pentachlorophenol (PCP) in water samples is presented. After adjusting the sample pH to 3, extraction was performed in the presence of 1% W/V sodium chloride by injecting 1 mL acetone as disperser solvent containing 15 μL tetrachloroethylene as extraction solvent. The proposed DLLME method was followed by HPLC-DAD for determination of PCP. It has good linearity (0.994) with wide linear dynamic range (0.1-1000 μg L-1) and low detection limit (0.03 μg L-1), which makes it suitable for determination of PCP in water samples. © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2009.