Determination of four bisphenols in water and urine samples by magnetic dispersive solid‐phase extraction using a modified zeolite/iron oxide composite prior to liquid chromatography diode array detection
作者： Paola Baile , Juan Medina , Lorena Vidal , Antonio Canals
关键词: Solid phase extraction 、 Materials science 、 Extraction (chemistry) 、 Bisphenol AF 、 Sorbent 、 Column chromatography 、 Bisphenol 、 Elution 、 Bisphenol A 、 Chromatography 、 Filtration and Separation 、 Analytical chemistry
摘要: A novel approach is presented to determine four bisphenols in water and urine samples, employing magnetic dispersive solid-phase extraction combined with liquid chromatography diode array detection. modified zeolite-based composite was used as an efficient sorbent, combining the advantages of materials remarkable properties zeolites. multivariate optimization design employed optimize some experimental factors affecting extraction. The method evaluated under optimized conditions (i.e., amount 50 mg; sample pH, unadjusted; NaCl concentration, 1.25%; elution time, 2 min; eluent solvent, ethanol; solvent volume, 400 µL), obtaining good linearity correlation coefficients ranging between 0.995 0.999 (N = 5) (from 2 250 µg/L for bisphenol A, AP, P from 5 AF). Method repeatability assessed variation 3 11% (n = 6). Finally, applied spiked real samples relative recoveries 83 105%, 81 108% AF, 47 59% P.
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