Magnetic modified montmorillonites as potential sorbent phases: characterization and sorption of triazine herbicides

IF 2.2 4区化学 Q2 Engineering

Chemical Papers Pub Date : 2024-12-06 DOI:10.1007/s11696-024-03839-y

Danieli S. Hakoyama, Michele C. W. Silvério, Luis Fernando A. Batista, Vander F. Melo, Marco T. Grassi, Gilberto Abate

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Abstract

In the present work, montmorillonite (Mt) from two different sources was modified by a one-pot method based on the oxidative polymerization of aniline using Fe₂(SO₄)₃ and magnetite formation by coprecipitation. The magnetic materials were used for the concentration and extraction of six triazine pesticides from aqueous solutions by magnetic solid-phase extraction, and their quantification was done by liquid chromatography–diode array detection. The starting and modified materials were subjected to different characterizations, and the composite formation was confirmed by the modification of the chemical groups present in the mineral phases and their different morphologies. Under optimal sorption conditions, the sorption values obtained for magnetic Mt (MMt) and magnetic Mt-K10 (MMt-K10) were above 80% for all compounds, except hexazinone. The best results were observed for ametryn (96%) on MMt and simazine (95%) on MMt-K10. Based on the results, it can be noted that the low-cost magnetic modified materials demonstrated a very satisfactory sorption of the selected triazines, which present a wide range of polarity. This could allow the development of cheaper analytical methods, with sustainable sorbents, for the quantification of more polar contaminants in aqueous matrices.

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来源期刊

Chemical Papers Chemical Engineering-General Chemical Engineering

CiteScore

3.30

自引率

4.50%

发文量

590

期刊介绍： Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.