Artículos de revistas
Determination of sunscreen compounds in water samples by silicone rod extraction
Fecha
2013Registro en:
Journal of the Chilean Chemical Society, Volumen 58, Issue 2, 2018, Pages 1741-1743
07179707
07179324
10.4067/S0717-97072013000200022
Autor
Giordano, A.
Richter Duk, Pablo
Leiva, K.
Ascar, L.
Institución
Resumen
Silicone rod extraction (SR) is a siloxane-based methodology for the extraction of organic pollutants from aqueous samples with similar principle extraction as the stir bar sorptive extraction (SBSE). In this study the SR was coupled with HPLC-DAD and employed for the extraction and quantification of selected UV filters in water and seawater samples. Chromatographic parameters were optimized as well as the main sorption/desorption conditions for 4-methylbenzylidene camphor (4MBC) and octyl-methoxy cinnamate (OMC) from both river water and seawater samples. After optimization of the proposed method the following variables were selected: 25,0 mL of sample volume, 3 hour extraction, 1250 rpm as stirring velocity and 2 mL methanol as desorption solvent. The recoveries from seawater samples were 76.6% for 4MBC and 85.9% OMC. In river water samples recoveries of 69.8% and 82.4 % for 4MBC and OMC, respectively, were observed when salt was added to the sample. Linear calibration curves were ob