Amine-functionalized MIL-53(Al)-coated stainless steel fiber for efficient solid-phase microextraction of synthetic musks and organochlorine pesticides in water samples

Lijun Xie; Shuqin Liu; Zhubing Han; Ruifen Jiang; Fang Zhu; Weiqin Xu; Chengyong Su; Gangfeng Ouyang

doi:10.1007/s00216-017-0472-x

Amine-functionalized MIL-53(Al)-coated stainless steel fiber for efficient solid-phase microextraction of synthetic musks and organochlorine pesticides in water samples

Anal Bioanal Chem. 2017 Sep;409(22):5239-5247. doi: 10.1007/s00216-017-0472-x. Epub 2017 Jul 6.

Authors

Lijun Xie¹, Shuqin Liu², Zhubing Han², Ruifen Jiang³, Fang Zhu², Weiqin Xu¹, Chengyong Su², Gangfeng Ouyang⁴

Affiliations

¹ Department of Chemistry, Guangdong University of Education, Guangzhou, 510303, China.
² MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
³ School of Environment, Guangzhou Key Laboratory of Environmental Exposure and Health, Guangdong Key Laboratory of Environmental Pollution University, Guangzhou, 510632, China.
⁴ MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, China. cesoygf@mail.sysu.edu.cn.

PMID: 28685174
DOI: 10.1007/s00216-017-0472-x

Abstract

The fiber coating is the key part of the solid-phase microextraction (SPME) technique, and it determines the sensitivity, selectivity, and repeatability of the analytical method. In this work, amine (NH₂)-functionalized material of Institute Lavoisier (MIL)-53(Al) nanoparticles were successfully synthesized, characterized, and applied as the SPME fiber coating for efficient sample pretreatment owing to their unique structures and excellent adsorption properties. Under optimized conditions, the NH₂-MIL-53(Al)-coated fiber showed good precision, low limits of detection (LODs) [0.025-0.83 ng L^-1 for synthetic musks (SMs) and 0.051-0.97 ng L^-1 for organochlorine pesticides (OCPs)], and good linearity. Experimental results showed that the NH₂-MIL-53(Al) SPME coating was solvent resistant and thermostable. In addition, the extraction efficiencies of the NH₂-MIL-53(Al) coating for SMs and OCPs were higher than those of commercially available SPME fiber coatings such as polydimethylsiloxane, polydimethylsiloxane-divinylbenzene, and polyacrylate. The reasons may be that the analytes are adsorbed on NH₂-MIL-53(Al) primarily through π-π interactions, electron donor-electron acceptor interactions, and hydrogen bonds between the analytes and organic linkers of the material. Direct immersion (DI) SPME-gas chromatography-mass spectrometry methods based on NH₂-MIL-53(Al) were successfully applied for the analysis of tap and river water samples. The recoveries were 80.3-115% for SMs and 77.4-117% for OCPs. These results indicate that the NH₂-MIL-53(Al) coating may be a promising alternative to SPME coatings for the enrichment of SMs and OCPs.

Keywords: NH2-MIL-53(Al); Organochlorine pesticides; Solid-phase microextraction; Synthetic musks.

Abstract

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