Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUNAN, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071, Córdoba, Spain.
Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica IUNAN, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie, E-14071, Córdoba, Spain.
Talanta. 2021 Jun 1;228:122217. doi: 10.1016/j.talanta.2021.122217. Epub 2021 Feb 17.
In this article, a magnetic paper-based sorptive phase is synthesized, which synergically combines the sorption capacity of a polyamide with the magnetic behavior of silica shielded FeO nanoparticles. The resulting material can be easily integrated into a drill-based environmental sampler, minimizing the diffusion boundary layer for enhanced mass transference. The new material has been evaluated for the extraction of four parabens and triclosan from swimming pool water samples. The main variables affecting the extraction have been studied in detail. The sampler is easy to transport allowing the on-site extraction of the analytes. This aspect can simplify the overall analytical procedure as only the sorptive phases, and not the samples, must be transported to the lab for the final analysis. The combination of the sampler with liquid chromatography-mass spectrometry allows determining the target analytes with limits of detection between 0.07 μg/L (butylparaben) and 0.1 μg/L (methylparaben and propylparaben). The precision, calculated at 5 μg/L, provides relative standard deviations better than 8%. The accuracy, which was evaluated spiking a blank swimming pool water sample with the target analytes at a concentration of 0.75 μg/L, provided relative recoveries in the range from 88 to 98%.
本文合成了一种基于磁性纸的吸附相，它协同结合了聚酰胺的吸附能力和二氧化硅屏蔽的 FeO 纳米粒子的磁性。所得材料可轻松集成到基于钻头的环境采样器中，最小化扩散边界层以增强质量传递。该新材料已用于从游泳池水样中提取四种对羟基苯甲酸酯和三氯生。详细研究了影响提取的主要变量。采样器易于运输，允许在现场提取分析物。这一方面可以简化整个分析过程，因为只有吸附相而不是样品必须运送到实验室进行最终分析。将采样器与液相色谱-质谱联用，可将目标分析物的检测限降低到 0.07μg/L（对羟基苯甲酸丁酯）至 0.1μg/L（对羟基苯甲酸甲酯和对羟基苯甲酸丙酯）之间。在 5μg/L 时计算的精密度提供了优于 8%的相对标准偏差。通过在浓度为 0.75μg/L 的空白游泳池水样中添加目标分析物来评估准确度，提供了 88%至 98%的相对回收率。
