【作者】 关瑜； 蒋成； 贾丽；

【Author】 GUAN Yu,JIANG Cheng,JIA Li (Ministry of Education Key Laboratory of Laser Life Science & Institute of Laser Life Science,College of Biophotonics,South China Normal University,Guangzhou 510631,China)

【机构】 华南师范大学激光生命科学教育部重点实验室&激光生命科学研究所；

【摘要】 首次报道了溶胶-凝胶技术对羟基封端多壁纳米碳管修饰磁粒的成功制备和表征,并将磁粒萃取与扫集胶束电动色谱技术相结合,快速有效地应用于己烯雌酚、雌酮和雌三醇的提取。结果证明,溶胶-凝胶技术制备多壁纳米碳管修饰磁粒是一种简单可行又有效的方法。研究了影响激素提取效率的因素,如磁粒的预活化、吸附时间、洗脱时间和洗脱溶剂的量。在最优条件下,纳米碳管修饰磁粒对己烯雌酚、雌酮和雌三醇的平均提取效率分别为96%、94%和52%。所建立的方法己成功地应用于自来水、矿泉水、河水和蜂蜜中雌性激素的分析。更多还原

【Abstract】 Magnetic silica particles coated with hydroxy-terminated multi-walled carbon nanotubes (MWCNTs - OH) were prepared by sol - gel technology,characterized and used for the convenient, rapid and efficient extraction of several estrogens(including diethylstilbestrol,estrone and estriol) in water followed by sweeping micellar electrokinetic chromatography analysis with UV detection.The results demonstrated that sol - gel technology was a simple,feasible and effective technique for the preparation of MWCNTs - OH functionalized magnetic silica particles.The factors affecting the extraction efficiency of estrogens such as,the pre-activation of magnetic particles,adsorption time, desorption time and the amount of elution solvent,were investigated.The extraction efficiencies for diethylstilbestrol,estrone and estriol were 96%,94%and 52%,respectively,under the optimum conditions.The developed method was successfully applied for the analysis of tap water,mineral water, Pearl River water and honey.更多还原