β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

Abstract

In this work, a magnetic β-cyclodextrin polymer was successfully prepared and used as an adsorbent for the magnetic solid-phase extraction of six benzoylurea insecticides (diflubenzuron, triflumuron, hexaflumuron, teflubenzuron, flufenoxuron, and chlorfluazuron) from honey, tomato, and environmental water samples. The influence of the main experimental conditions on the extraction was studied. Under the optimized conditions, the β-cyclodextrin polymer@Fe O showed an excellent extraction performance for the benzoylurea insecticides. A good linearity was obtained for the analytes in the range of 3.0-800 ng/g for honey samples, 0.3-160 ng/g for tomato samples, and 0.1-80.0 ng/mL for water samples, with the correlation coefficients above 0.9998. Satisfactory repeatabilities were achieved, with the relative standard deviations less than 5.7%. The limits of detection (S/N = 3) of the method for the benzoylurea insecticides were 0.2-0.8 ng/g for honey samples, 0.04-0.10 ng/g for tomato samples, and 0.02-0.05 ng /mL for water samples. The method was successfully used for the determination of the six benzoylurea insecticides residues in honey, tomato, and environmental water samples with a satisfactory result.

Magnetic solid‐phase extraction of benzoylurea insecticides by Fe3O4 nanoparticles decorated with a hyper‐cross‐linked porous organic polymer

“…To evaluate the developed method, it was compared with previously reported techniques for the analysis of BUs in respect of the samples, extraction time, spiked recovery, linearity, LODs, and RSDs (see Supporting Information Table S4) . Results demonstrate that the present method has a shorter or comparable extraction time, better linearity, higher recovery, lower LODs, and RSDs than most of the methods listed in Supporting Information Table S4.…”

Preparation of a magnetic graphene/polydopamine nanocomposite for magnetic dispersive solid-phase extraction of benzoylurea insecticides in environmental water samples

“… Method Extraction sorbent Sorbent amount Extraction time Recovery (%) RSD (%) LODs (μg L −1 ) Ref. SPE-HPLC TiO 2 nanotube — 45 min 82–100 — 0.062–0.21 8 SPME-HPLC β-CDP@ Fe 3 O 4 16 mg 25 min 87.3–112.5 1.5–5.3 0.02–0.05 13 SPME-HPLC MMF/MAED fiber — 70 min 70.9–118 1.5–9.8 0.026–0.075 9 MLLE/DSPE-LC Fe 3 O 4 /SiO 2 /ILs 3 mg 4 min 73.2–85.8 2.2–4.5 0.67–1.46 26 MDSPE-HPLC MG/PDA 10 mg 30 s 70.6–91.6 0.3–5.9 0.75 This work …”

“…An alternative strategy to address this inefficiency in DSPE analysis is to magnetize the sorbent and develop a magnetic DSPE (MDSPE) technique. Recently, several materials have been prepared for the preparing of magnetic sorbents to extract BUIs from different matrixes, such as attapulgite 1 , ionic liquids 12 , and polymers 2 , 13 .…”

Hyperbranched aromatic polyamide modified magnetic nanoparticles for the extraction of benzoylurea insecticides

“…The extraction performance of the proposed Fe 3 O 4 -HAPAM-based MSPE method was compared with previous reports [27][28][29][30][31][32] involving the determination of BUs in water samples (Table 1). The merits of the proposed method were low sorbent consumption and short experiment time.…”