Core-shell structured Fe2O3/CeO2@MnO2 microspheres with abundant surface oxygen for sensitive solid-phase microextraction of polycyclic aromatic hydrocarbons from water

Shengrui Xu; Panlong Dong; Ming Qin; Hailin Liu; Anying Long; Changpo Chen; Suling Feng; Hongjing Wu

doi:10.1007/s00604-021-05004-8

Core-shell structured Fe₂O₃/CeO₂@MnO₂ microspheres with abundant surface oxygen for sensitive solid-phase microextraction of polycyclic aromatic hydrocarbons from water

Mikrochim Acta. 2021 Sep 12;188(10):337. doi: 10.1007/s00604-021-05004-8.

Authors

Shengrui Xu¹, Panlong Dong², Ming Qin³, Hailin Liu², Anying Long⁴, Changpo Chen², Suling Feng², Hongjing Wu⁵

Affiliations

¹ Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China. xushengrui@126.com.
² Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China.
³ School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China.
⁴ 113 Geological Brigade, Guizhou Bureau of Geology and Mineral Resources, Liupanshui, 553000, People's Republic of China.
⁵ School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China. wuhongjing@nwpu.edu.cn.

PMID: 34510313
DOI: 10.1007/s00604-021-05004-8

Abstract

Core-shell structured Fe₂O₃/CeO₂@MnO₂ microspheres were fabricated and used as solid-phase microextraction coating for determination of polycyclic aromatic hydrocarbons (PAHs) in water samples. XPS spectra demonstrated the generation of abundant surface oxygen on Fe₂O₃/CeO₂@MnO₂ microspheres, which provided binding sites for enhancement of analyte extraction. Under optimized conditions, the proposed method presented good linearity in the concentration range 0.04-100 ng mL^-1, with low limits of detection varying from 0.38 to 3.57 ng L^-1 for eight PAHs. Relative standard deviations for a single fiber and five batches of fibers were in the ranges of 4.1-8.2% and 7.1-11.4%, respectively. The proposed method was successfully used for determination of PAHs in real river water samples with recoveries ranging from 87.1 to 115.9%. The proposed method using as-prepared Fe₂O₃/CeO₂@MnO₂ microspheres as SPME coating exhibit significant potential for real sample analysis due to its excellent reproducibility, high sensitivity, and good linearity.

Keywords: Abundant surface oxygen; Core-shell structure; Fe2O3/CeO2@MnO2; Gas chromatography−mass spectrometry; Polycyclic aromatic hydrocarbons; Solid-phase microextraction.