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Jin R, Ji F, Lin H, Luo C, Hu Y, Deng C, Cao X, Tong C, Song G. The synthesis of Zr-metal-organic framework functionalized magnetic graphene nanocomposites as an adsorbent for fast determination of multi-pesticide residues in tobacco samples. J Chromatogr A 2018; 1577:1-7. [PMID: 30268537 DOI: 10.1016/j.chroma.2018.09.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/30/2018] [Accepted: 09/20/2018] [Indexed: 01/04/2023]
Abstract
In this paper, a simple and reliable method has been established to determine the residues of nine pesticides in tobacco by using GC-MS coupled with magnetic solid phase extraction. A novel magnetic Zr-MOF nanocomposite based on graphene was synthesized, and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy and N2 adsorption-desorption measurements. The prepared material has the advantage of large surface area (178 m2/g), good magnetic response and high thermal stability, which is shown to be suited for the fast enrichment of multi-pesticides in tobacco matrix. The extraction conditions including amount of adsorbent, adsorption time, eluting solvent as well as desorption time were investigated. The whole process of pretreatment is accomplished within 10 min. This method shows low limit of detection, wide linear range and good reproducibility (relative standard deviations <12.7%), satisfactory recoveries were obtained, ranging from 57.9% to 126.3% for tobacco samples.
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Affiliation(s)
- Rongrong Jin
- Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Fenqi Ji
- Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Huaqing Lin
- Technology Center, Shanghai Tobacco Group CO., LTD, 717 Changyang Road, Shanghai, 200082, China; Department of Chemistry, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200433, China
| | - Chen Luo
- Technology Center, Shanghai Tobacco Group CO., LTD, 717 Changyang Road, Shanghai, 200082, China
| | - Yaoming Hu
- Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Chunhui Deng
- Department of Chemistry, Institutes of Biomedical Sciences, Fudan University, Shanghai, 200433, China
| | - Xiujun Cao
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China.
| | - Chunfu Tong
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 3663 N. Zhongshan Rd., Shanghai, 200062, China
| | - Guoxin Song
- Research Center of Analysis and Measurement, Fudan University, 2005 Songhu Road, Shanghai, 200438, China; Technology Center, Shanghai Tobacco Group CO., LTD, 717 Changyang Road, Shanghai, 200082, China.
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