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1. Ion-pair sorptive extraction of perfluorinated compounds from water with low-cost polymeric materials: Polyethersulfone vs polydimethylsiloxane

Author:
Villaverde-de-Sáa, Eugenia; Racamonde, Inés; Quintana, José Benito; Rodil, Rosario; Cela, Rafael
Source:
Analytica chimica acta 2012 v.740 pp. 50-57
ISSN:
0003-2670
Subject:
carboxylic acids; desorption; detection limit; freshwater; ionic strength; liquid chromatography; pH; perfluorocarbons; polar compounds; polymers; prices; sewage; solvents; surface water; tandem mass spectrometry
Abstract:
... A method for the determination of seven perfluorinated carboxylic acids and perfluorooctane sulphonate (PFOS) in aqueous samples using low-cost polymeric sorptive extraction as sample preparation technique, followed by liquid chromatography–tandem mass spectrometry (LC–MS/MS) determination has been developed and validated. Simplicity of the analytical procedure, low volume of solvent and sample re ...
DOI:
10.1016/j.aca.2012.06.027

2. Multiresidue determination of pesticides from aquatic media using polyaniline nanowires network as highly efficient sorbent for microextraction in packed syringe

Author:
Bagheri, Habib; Alipour, Noshin; Ayazi, Zahra
Source:
Analytica chimica acta 2012 v.740 pp. 43-49
ISSN:
0003-2670
Subject:
cetyltrimethylammonium bromide; desorption; detection limit; gas chromatography-mass spectrometry; micelles; microextraction; monitoring; multiresidue analysis; nanowires; pH; pesticides; polymers; river water; scanning electron microscopy; solvents; triazines
Abstract:
... A simple, rapid and sensitive method based on microextraction in packed syringe (MEPS), in combination with gas chromatography–mass spectrometry (GC–MS) was developed. Polyaniline (PANI) nanowires network was synthesized and used as sorbent of MEPS for the multiresidue determination of selected analytes from triazine, organochlrorine and organophosphorous pesticides in aqueous samples. The PANI na ...
DOI:
10.1016/j.aca.2012.06.026