Xi Jiangbo, Zhang Juan, Zhao Haiyan
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology.
School of Pharmaceutical Sciences, South-central University for Nationalities.
Anal Sci. 2017;33(9):999-1005. doi: 10.2116/analsci.33.999.
A novel magnetic absorbent based on FeO hollow nanospheres was developed for polycyclic aromatic hydrocarbons (PAHs) extraction. FeO hollow nanospheres were prepared by a one-pot facile solvothermal method and its structural properties were characterized by scanning electron microscope (SEM) and analyzer transmission electron microscopy (TEM). It was the first time to use hollow nanospheres which possess high special surface area for magnetic solid-phase extraction (MSPE). The extraction condition of FeO hollow nanospheres and its performance for PAHs was systematically investigated. Besides, its extraction performance also compared with bare FeO nanoparticles. The results indicated the structure with hollow and spherical FeO perform better enrichment ability than that with solid and amorphous ones. The developed MSPE coupled with HPLC method shows good linearity (0.1 - 5 ng/mL) and low detection limits (2.5 - 10 pg/mL) for six PAHs. It also has been executed for the analysis of environmental samples, with recoveries in the range of 84.6 - 97.8%.
开发了一种基于FeO空心纳米球的新型磁性吸附剂用于多环芳烃（PAHs）的萃取。通过一锅法简便的溶剂热法制备了FeO空心纳米球，并用扫描电子显微镜（SEM）和分析型透射电子显微镜（TEM）对其结构性质进行了表征。首次将具有高比表面积的空心纳米球用于磁性固相萃取（MSPE）。系统研究了FeO空心纳米球的萃取条件及其对PAHs的性能。此外，还将其萃取性能与裸FeO纳米颗粒进行了比较。结果表明，具有空心球形结构的FeO比具有实心无定形结构的FeO具有更好的富集能力。所开发的MSPE与HPLC联用方法对六种PAHs显示出良好的线性（0.1 - 5 ng/mL）和低检测限（2.5 - 10 pg/mL）。该方法还用于环境样品的分析，回收率在84.6 - 97.8%范围内。
