Fe3O4 nanoparticles as matrix solid-phase dispersion extraction adsorbents for the analysis of thirty pesticides in vegetables by ultrahigh-performance liquid chromatography-tandem mass spectrometry

Liu, Jin; Ji, Chun-hong; Liu, Xiaoliang; Li, Xuesheng; Wu, Haiyan; Zeng, Dongqiang

doi:10.1016/j.jchromb.2021.122532

Cited by 9 publications

(1 citation statement)

References 32 publications

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“…Effective pre-treatment often leads to better test results. Frequently used methods include microwave-assisted extraction (MAE) [11], solid-phase extraction (SPE) [12][13][14], solid-phase micro-extraction (SPME) [15,16], quick, easy, cheap, effective, rugged, and safe (QuEchERS) [17] and matrix solid-phase dispersion (MSPD) [18]. Optimization of the traditional sample pre-treatment method has resulted in a significant increase in sensitivity, but its lack of selectivity and specificity has led to strong matrix effects.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube-Supported Dummy Template Molecularly Imprinted Polymers for Selective Adsorption of Amide Herbicides in Aquatic Products

Zeng

Huang

et al. 2023

Nanomaterials

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In this study, a carbon nanotube (CNTs)—supported dummy template molecularly imprinted polymer (DMIPs) material was synthesized and utilized for the detection of amide herbicides in aquatic products via matrix solid-phase dispersion technology (MSPD). The DMIPs material was characterized, and its adsorption kinetics and isotherm were determined, the adsorption model was established, and the selective adsorption coefficient was calculated. The extract parameters of the method were optimized and successfully employed for the separation, analysis and detection of real samples, with satisfactory detection limits and linear ranges obtained. By comparing with other methods, the CNTs@DMIPs combined with MSPD technology established in our study can effectively solve false negative problems caused by insufficient destructive force, using dummy template molecules can also address the issue of false positives caused by template molecule leakage in molecular imprinting. Overall, the method is appropriate for the separation and detection of endogenous substances from highly viscous and poorly dispersed samples and is used as a routine detection tool in the aquaculture industry.

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