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- W2980242327 abstract "In this study, a high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork as extraction phase is demonstrated for the first time in the determination of 20 multiclass organic micro-pollutants including pesticides, PAHs and UV filters compounds from aqueous samples with gas chromatography mass spectrometry (GC-MS). The influencing parameters (desorption solvent, volume and time, extraction time and sample pH and ionic strength) were carefully optimized using multivariate designs. The optimal conditions were 10 min for extraction using 35 mL of water samples and a liquid desorption using 1 mL of MeOH:AcOEt (50:50% v/v) for 20 min. A low-cost apparatus that allows six extractions simultaneously, providing a high throughput of 5 min per sample turnaround times, considering the sample preparation step was used for the first time in this modified RDSE methodology. Satisfactory analytical performance was achieved with limits of detection (LOD) between 0.08 and 1.5 μg L−1 and limits of quantification (LOQ) between 0.3 and 4.8 μg L−1. The relative recoveries for the analytes were determined using river and lake water samples spiked at different concentrations and ranging from 80% to 119% for all analytes, with relative standard deviations (RSD) lower than 20%. The extraction efficiency obtained for the proposed configuration with laminar cork was significantly superior to powdered cork, demonstrating an interesting new configuration for new applications." @default.
- W2980242327 created "2019-10-18" @default.
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- W2980242327 date "2020-02-01" @default.
- W2980242327 modified "2023-09-29" @default.
- W2980242327 title "A high throughput approach to rotating-disk sorptive extraction (RDSE) using laminar cork for the simultaneous determination of multiclass organic micro-pollutants in aqueous sample by GC-MS" @default.
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- W2980242327 doi "https://doi.org/10.1016/j.talanta.2019.120459" @default.
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