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Magnetic nanoparticles speed up mechanochemical solid phase extraction with enhanced enrichment capability for organochlorines in plants

TitleMagnetic nanoparticles speed up mechanochemical solid phase extraction with enhanced enrichment capability for organochlorines in plants
Publication TypeJournal Article
Year of Publication2019
AuthorsZhou, Y, Zhu, J, Yang, J, Lv, Y, Zhu, Y, Bi, W, Yang, X, Chen, DDa Yong
JournalAnalytica Chimica Acta
ISSN0003-2670
Keywordsenvironmental contaminants, magnetic metal-organic-framework, Mechanochemical magnetic solid phase extraction, organochlorine pesticides
Abstract

A mechanochemical magnetic solid phase extraction (MCMSPE) method was developed for a one-pot extraction and enrichment of organochlorine pesticides in tea leaves to demonstrate the advantage of using magnetic nanoparticles in the sample preparation process. The enriched analytes were subsequently detected by ultra-high performance liquid chromatography and gas chromatography mass spectrometry. The presence of magnetic metal-organic-framework (MMOF) (Fe3O4@MIL-100 (Fe)) nanoparticles help to rupture the cell walls in solid plant samples more thoroughly, and at the same time, act as a selective sorbent for the enrichment of target analytes. Compared to traditional methods, this approach significantly shortens the sample processing time from tens of minutes to tens of seconds. The parameters of the procedure were systematically studied and optimized to achieve good limits of detection (0.62 to 3.92 ng g-1, LOD S/N=3), significantly improved recoveries (81.46 to 113.59%), and good reproducibility (RSD 2.63-9.87

URLhttp://www.sciencedirect.com/science/article/pii/S0003267019303526
DOI10.1016/j.aca.2019.03.049