alexa Analytical method development for the determination of emerging contaminants in water using supercritical-fluid chromatography coupled with diode-array detection
Chemical Engineering

Chemical Engineering

Journal of Chromatography & Separation Techniques

Author(s): Vilma del Carmen SalvatierraS, Silvia G CeballosMagaa, Jorge Gonzalez, Valentin IbarraGalvn, Roberto MuizValencia

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An analytical method using supercritical-fluid chromatography coupled with diode-array detection for the determination of seven emerging contaminants—two pharmaceuticals (carbamazepine and glyburide), three endocrine disruptors (17α-ethinyl estradiol, bisphenol A, and 17β-estradiol), one bactericide (triclosan), and one pesticide (diuron)—was developed and validated. These contaminants were chosen because of their frequency of use and their toxic effects on both humans and the environment. The optimized chromatographic separation on a Viridis BEH 2-EP column achieved baseline resolution for all compounds in less than 10 min. This separation was applied to environmental water samples after sample preparation. The optimized sample treatment involved a preconcentration step by means of solid-phase extraction using C18-OH cartridges. The proposed method was validated, finding recoveries higher than 94 % and limits of detection and limits of quantification in the range of 0.10–1.59 μg L−1 and 0.31–4.83 μg L−1, respectively. Method validation established the proposed method to be selective, linear, accurate, and precise. Finally, the method was successfully applied to environmental water samples.

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This article was published in Analytical and Bioanalytical Chemistry and referenced in Journal of Chromatography & Separation Techniques

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