A simple and rapid method for the determination of eleven @entity11572 in water samples is presented. The target analytes are isolated by stir membrane liquid-liquid microextraction working under the three-phase mode. An alkaline aqueous solution is used as extractant phase while @entity10333 is selected as supported liquid membrane solvent. The target analytes are separated and determined by liquid chromatography (LC) with ultraviolet detection (UV). All the variables involved in the extraction process have been studied in depth. Low detection limits (in the range from 82.1 ng/L for @entity3971 to 452 ng/L for @entity43661 ) were obtained. The repeatability, expressed as relative standard deviation (RSD), varied between 1.3% (for @entity11921 ) and 8.0% (for @entity44561 ). The enrichment factors were in the range from 168 (for @entity43661 ) to 395 (for @entity70233 ). The proposed procedure was applied for the direct determination of the eleven @entity11572 in some real water samples including river, well and tap waters. The accuracy was evaluated by means of a recovery study, the results being in the range of 87-120%.

Determination of XXXX in waters by stir membrane liquid-liquid-liquid microextraction coupled to liquid chromatography with ultraviolet detection.

@entity44561 :: ('MESH:C029107', 'Chemical') :: ['4-chlorophenol'] @entity43661 :: ('MESH:C009534', 'Chemical') :: ['2,4,5-trichlorophenol'] @entity3971 :: ('MESH:D019800', 'Chemical') :: ['phenol'] @entity70233 :: ('MESH:C030682', 'Chemical') :: ['3-chlorophenol'] @entity10333 :: ('CHEBI:37868', 'Chemical') :: ['octanol'] @entity11921 :: ('MESH:C024836', 'Chemical') :: ['4-nitrophenol'] @entity11572 :: ('MESH:D010636', 'Chemical') :: ['phenols']
@entity11572 :: (MESH:D010636,Chemical) :: ['phenols']
