Magnetic tetraethylenepentamine modified multi-walled carbon nanotubes as matrix clean-up materials for organophosphorus pesticide residues analysis in cucumber. (June 2021)

• Record Type: Journal Article
• Authors: Wang, Jun; Duan, Hui-Ling; Fan, Li; Lin, You-Ming; Sun, Jia-Ning; Zhang, Zhi-Qi
• Is Part Of: Food control. Volume 124(2021)
• Publication Date: 2021-06
• Subjects: QuEChERS -- Modified multi-wall carbon nanotubes -- Magnetic adsorbent -- Clean-up materials -- Pesticide residues; Food -- Quality -- Periodicals; Food -- Analysis -- Periodicals; Food handling -- Periodicals; Food industry and trade -- Quality control -- Periodicals; Aliments -- Industrie et commerce -- Qualité -- Contrôle -- Périodiques; Aliments -- Qualité -- Périodiques; Aliments -- Analyse -- Périodiques; Hygiène alimentaire -- Périodiques; Food -- Analysis; Food handling; Food -- Quality; Periodicals; Electronic journals; 664.07
• DOI: 10.1016/j.foodcont.2021.107904
• Languages: English
• ISSNs: 0956-7135

Abstract

Abstract: In order to better remove the interfering substances in the vegetables, a type of tetraethylenepentamine modified multi-wall carbon nanotubes has been prepared. As-prepared materials contain amino-groups and organic chains, and magnetism is endowed by using physical blending method. Taking the magnetic tetraethylenepentamine modified multi-walled carbon nanotubes as matrix clean-up agents and combining with GC-MS, a modified QuEChERS method was established for the pesticide residues analysis in cucumber. The recoveries of 10 pesticide targets were 73.5%–114.2%, and the RSDs were between 4.9% and 18.6%, which could meet the requirements of food safety testing. Compared with the traditional clean-up materials, the prepared materials exhibited better clean-up performance while simplifying the pretreatment process. Given the excellent clean-up performance of the proposed materials, it was expected to be used in the clean-up process of other samples with complex contents. Highlights: Magnetic tetraethylenepentamine modified MWCNTs were designed and prepared. As-prepared M-TP-MWCNTs exhibited efficient clean-up performance. M-TP-MWCNTs can effectively remove the matric interferences in cucumber. A modified QuEChERS method was developed, validated and applied.