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Title: Development of a sensitive determination method for benzotriazole UV stabilizers in enviromental water samples with stir bar sorption extraction and liquid desorption prior to ultra-high performance liquid chromatography with tandem mass spectrometry
Authors: Montesdeoca-Esponda, Sarah 
Del Toro-Moreno, Adrián
Sosa-Ferrera, Zoraida 
Santana-Rodríguez, José Juan 
UNESCO Clasification: 2301 química analítica
Keywords: Benzotriazole
Liquid desorption
Stir bar sorption extraction
Ultra-high performance LC
Issue Date: 2013
Publisher: 1615-9306
Project: Desarrollo de Nuevas Estrategias de Extracción en El Análisis de Residuos Farmacéuticos.Implementación en Muestras Reales de Interés Medioambiental. 
Journal: Journal of Separation Science 
Abstract: Benzotriazole UV stabilizers are emerging compounds used in personal care products and can enter surface water after passing through wastewater treatment plants without being removed. Because these analytes are strongly hydrophobic, there is an environmental risk of accumulation in solid matrices and magnification through the trophic chain. In this work, a method based on stir bar sorption extraction with liquid desorption is presented for the extraction of benzotriazole UV stabilizers from water samples. Stir bar sorptive extraction was combined with ultra‐high performance LC with MS/MS detection. All important factors affecting the stir bar sorptive extraction procedure are discussed, and the optimized method was applied to seawater and wastewater samples from Gran Canaria Island, providing good selectivity and sensitivity with LODs and limits of quantification in the range of 18.4–55.1 and 61.5–184 ng/L, respectively. Recoveries between 68.4–92.2% were achieved for the more polar compounds, whereas the recoveries were lower for the two less polar compounds, most likely due to their strong absorption into the polydimethylsiloxane stir bar phase that does not allows the complete desorption. The repeatability studies gave RSDs of between 6.45 and 12.6% for all compounds in the real samples.
ISSN: 1615-9306
DOI: 10.1002/jssc.201300191
Source: Journal of Separation Science [ISSN 1615-9306], v. 36, p. 2168-2175
Appears in Collections:Reseña
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