Metal organic framework derived Zn/N co-doped hydrophilic porous carbon for efficient solid phase microextraction of polar phenols

Qian Yan; Lijin Huang; Weikang Guo; Lei Ouyang; Qin Shuai

doi:10.1007/s00604-021-05060-0

Metal organic framework derived Zn/N co-doped hydrophilic porous carbon for efficient solid phase microextraction of polar phenols

Mikrochim Acta. 2021 Oct 31;188(11):400. doi: 10.1007/s00604-021-05060-0.

Authors

Qian Yan¹, Lijin Huang², Weikang Guo¹, Lei Ouyang¹, Qin Shuai³

Affiliations

¹ State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Hongshan District, No. 388, Lumo Road, Wuhan, 430074, People's Republic of China.
² State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Hongshan District, No. 388, Lumo Road, Wuhan, 430074, People's Republic of China. huanglj@cug.edu.cn.
³ State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Hongshan District, No. 388, Lumo Road, Wuhan, 430074, People's Republic of China. shuaiqin@cug.edu.cn.

PMID: 34718874
DOI: 10.1007/s00604-021-05060-0

Abstract

MOF-derived zink and nitrogen co-doped porous carbon (ZNPC) was synthesized through the pyrolysis of MOF-5-NH₂ and used as a solid-phase microextraction (SPME) coating material. Coupled with gas chromatography-mass spectrometry (GC-MS), headspace SPME (HS-SPME) based on ZNPC was adopted for the determination of phenols in food samples. The co-existence of N and Zn in ZNPC endows the derived carbon superior hydrophilicity, which is highly beneficial for phenols capture. After optimizing the conditions of extraction and desorption, a sensitive analytical method was established with low limits of detections (LODs, 0.73-2.3 ng g^-1) and wide linear ranges (5-5000 ng g^-1). Both the intra-fiber repeatability (RSDs from 2.8-7.3%) and inter-fiber reproducibility (RSDs from 9.7-11.7%) were satisfactory. The established method was applied to phenol determination in beef jerky and duck neck with satisfactory recoveries of 81.2-120.4% and RSDs of 2.8-9.9%, which met well with the requirement of practical application.

Keywords: Hydrophobic sorbent; MOF-derived materials; Phenols; Porous carbon; Solid-phase microextraction.

Abstract

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