Department of Analytical Chemistry, Jilin Institute of Chemical Technology, Jilin, P. R. China.
J Sep Sci. 2019 Nov;42(22):3451-3458. doi: 10.1002/jssc.201900611. Epub 2019 Oct 1.
Glucose-derived carbon-decorated magnetic microspheres were synthesized by an easy hydrothermal carbonization method and used as a high-efficiency adsorbent to extract bisphenols in water and tea drinks. The as-prepared carbon-decorated magnetic microspheres had a well-defined core-shell structure with a shell thickness of about 5 nm. The microspheres possessed high saturation magnetization at 60.8 emu/g and excellent chemical stability in aqueous solution. The experimental parameters affecting the extraction efficiency, including extraction time, pH, adsorbent dosage, desorption solvents, desorption time, and solution volume were evaluated. Electrostatic and π-π interactions were the major driving forces during extraction. Overall, a new magnetic solid-phase extraction method of determining bisphenols was developed on the basis of as-prepared magnetic microspheres. The method had a wide linear range, low limits of detection (0.03-0.10 µg/L), and high recoveries (85.4-104.6%).
葡萄糖衍生的碳修饰磁性微球通过一种简单的水热碳化方法合成，被用作高效吸附剂来从水中和茶饮料中提取双酚类物质。所制备的碳修饰磁性微球具有良好的核壳结构，壳层厚度约为 5nm。微球具有 60.8 emu/g 的高饱和磁化强度和在水溶液中的优异化学稳定性。实验参数影响萃取效率，包括萃取时间、pH 值、吸附剂用量、解吸溶剂、解吸时间和溶液体积。静电和π-π相互作用是萃取过程中的主要驱动力。总的来说，基于所制备的磁性微球，开发了一种新的用于测定双酚类物质的磁性固相萃取方法。该方法具有较宽的线性范围、较低的检测限（0.03-0.10µg/L）和较高的回收率（85.4-104.6%）。
