Ionic liquid-based effervescence-enhanced magnetic solid-phase extraction for organophosphorus pesticide detection in water samples

Herein, an ionic liquid-based effervescence-enhanced magnetic solid-phase extraction (ILE-MSPE) approach for extraction/concentration of organophosphorus pesticides in waters, which with high stability and portability for rapid sample pre-treatment in field. The...

REVIEW: APPLICATION OF MAGNETIC SOLID-PHASE EXTRACTION (MSPE) IN VARIOUS TYPES OF SAMPLES

This review aimed to inform about the magnetic nanoparticle functionalization and solid magnetic phase extraction application to separate analytes in various types of samples. The review was conducted by analyzing several articles published in 2010 until 2021 obtained through search engines, such as Science Direct, Google Scholar and PubMed, using the keyword “magnetic phase extraction” and “magnetic nanoparticle”. The magnetic nanoparticle can be functionalized with organic, inorganic, and metal-organic framework compounds to obtain good selectivity and extraction capability. The Magnetic Solid Phase Extraction (MSPE) can be applied to separate analytes in biological, food, environmental samples. The MSPE can be used in various biological, food, and environmental samples resulting in high enrichment factor value, good recovery, and the magnetic adsorbent has excellent reusability.

Magnetic Solid-Phase Extraction Based on Magnetic Sulfonated Reduced Graphene Oxide for HPLC–MS/MS Analysis of Illegal Basic Dyes in Foods

In this study, a magnetic solid-phase extraction (MSPE) method coupled with High-Performance Liquid Chromatography Mass Spectrometry (HPLC–MS/MS) for the determination of illegal basic dyes in food samples was developed and validated. This method was based on Magnetic sulfonated reduced graphene oxide (M-S-RGO), which was sensitive and selective to analytes with structure of multiaromatic rings and negatively charged ions. Several factors affecting MSPE efficiency such as pH and adsorption time were optimized. Under the optimum conditions, the calibration curves exhibited good linearity, ranging from 5 to 60 µg/g with correlation coefficients >0.9950. The limits of detection of 16 basic dyes were in the range of 0.01–0.2 µg/L. The recoveries ranged from 70% to 110% with RSD% < 10%. The results indicate that M-S-RGO is an efficient and selective adsorbent for the extraction and cleanup of basic dyes. Due to the MSPE procedures, matrix effect and interference were eliminated in the analysis of HPLC–MS/MS without the matrix-matched standards. Thus, validation data showed that the proposed MSPE–HPLC–MS/MS method was rapid, efficient, selective, and sensitive for the determination of illegal basic dyes in foods.