The determination of pesticides in tea samples followed by magnetic multiwalled carbon nanotube-based magnetic solid-phase extraction and ultra-high performance liquid chromatography-tandem mass spectrometry

2019 ◽  
Vol 43 (14) ◽  
pp. 5395-5403 ◽  
Author(s):  
Chu Liu ◽  
Yinghe Ji ◽  
Xu Jiang ◽  
Xucan Yuan ◽  
Xinyue Zhang ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Ultrasound Assisted Extraction ◽  
Multiwalled Carbon ◽  
Magnetic Solid ◽  
Set Up

A simple and efficient method regarding ultrasound-assisted extraction combined with magnetic solid-phase extraction (UA-MSPE) by UHPLC-MS/MS was set up for the determination of three pesticides in tea leaf samples.

Determination of aflatoxin M1 in liquid milk using high performance liquid chromatography with fluorescence detection after magnetic solid phase extraction

RSC Advances ◽  
2014 ◽  
Vol 4 (63) ◽  
pp. 33497-33506 ◽  
Author(s):  
Mahdi Hashemi ◽  
Zohreh Taherimaslak
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Liquid Milk

A new and sensitive method based on magnetic solid phase extraction (MSPE) with antibody-free modified magnetic nanoparticles (MMNPs) followed by high performance liquid chromatography with post-column derivatization and fluorescence detection (HPLC-PCD-FD) has been developed for the separation and determination of aflatoxin M1 (AFM1) in liquid milk.

scholarly journals Determination of Aflatoxin B1 and B2 in Vegetable Oils Using Fe3O4/rGO Magnetic Solid Phase Extraction Coupled with High-Performance Liquid Chromatography Fluorescence with Post-Column Photochemical Derivatization

Toxins ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 621 ◽  
Author(s):  
Li Yu ◽  
Fei Ma ◽  
Liangxiao Zhang ◽  
Peiwu Li
Keyword(s):  
High Performance Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Vegetable Oils ◽  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Magnetic Solid ◽  
Graphene Nanocomposite

In this study, magnetic graphene nanocomposite Fe3O4/rGO was synthesized by facile one-pot solvothermal method. The nanocomposite was successfully used as magnetic solid phase extraction (MSPE) adsorbents for the determination of aflatoxins in edible vegetable oils through the π–π stacking interactions. MSPE parameters including the amount of adsorbents, extraction and desorption time, washing conditions, and the type and volume of desorption solvent were optimized. Under optimal conditions, good linear relationships were achieved. Limits of detection of this method were as low as 0.02 µg/kg and 0.01 µg/kg for aflatoxin B1 and B2, respectively. Finally, the magnetic graphene nanocomposite was successfully applied to aflatoxin analysis in vegetable oils. The results indicated that the recoveries of the B-group aflatoxins ranged from 80.4% to 106.0%, whereas the relative standard deviations (RSDs) were less than 8.1%. Owing to the simplicity, rapidity and efficiency, Fe3O4/rGO magnetic solid phase extraction coupled with high-performance liquid chromatography fluorescence with post-column photochemical derivatization (Fe3O4/rGO MSPE-HPLC-PCD-FLD) is a promising analytical method for routine and accurate determination of aflatoxins in lipid matrices.

Separation and determination of aflatoxins B1, B2, G1 and G2 in pistachio samples based on magnetic solid phase extraction followed by high performance liquid chromatography with fluorescence detection

2014 ◽  
Vol 6 (19) ◽  
pp. 7663-7673 ◽  
Author(s):  
Mahdi Hashemi ◽  
Zohreh Taherimaslak
Keyword(s):  
Solid Phase Extraction ◽  
Fluorescence Detection ◽  
High Performance ◽  
Solid Phase ◽  
Detection System ◽  
Magnetic Solid Phase Extraction ◽  
Fast Method ◽  
Phase Extraction ◽  
Magnetic Solid

A simple and fast method based on magnetic solid phase extraction (MSPE) followed by HPLC with a post column derivatization-fluorescence detection system has been developed for simultaneous separation and determination of aflatoxins (AFs) B1, B2, G1 and G2 in pistachio.

Magnetic solid-phase extraction using polydopamine-coated magnetic multiwalled carbon nanotube composites coupled with high performance liquid chromatography for the determination of chlorophenols

The Analyst ◽  
2021 ◽  
Vol 146 (20) ◽  
pp. 6252-6261
Author(s):  
Wenhui Lu ◽  
Shanchao Fu ◽  
Xiaoze Sun ◽  
Jie Liu ◽  
Deyi Zhu ◽  
...  
Keyword(s):  
High Performance ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Multiwalled Carbon ◽  
Nanotube Composites ◽  
Magnetic Solid ◽  
Carbon Nanotube Composites ◽  
Facile Preparation

PDA-coated M-MWCNTs synthesized in two facile preparation steps were used as adsorbents for MSPE coupled with HPLC for simultaneous analysis of five chlorophenols in water samples.

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