Efficient solid-phase microextraction of twelve halogens-containing environmental hormones from fruits and vegetables by triazine-based conjugated microporous polymer coating

2022 ◽  
pp. 339458
Author(s):  
Nana Wan ◽  
Qingyun Chang ◽  
Fangyuan Hou ◽  
Jie Li ◽  
Xiaohuan Zang ◽  
...  
Keyword(s):  
Polymer Coating ◽  
Solid Phase Microextraction ◽  
Fruits And Vegetables ◽  
Solid Phase ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer

Use of Carbon Nanotubes for the Analysis of Pesticide Residues in Fruits and Vegetables

2016 ◽  
Vol 99 (6) ◽  
pp. 1415-1425 ◽  
Author(s):  
Lukman Bola Abdulrauf ◽  
Guan Huat Tan
Keyword(s):  
Carbon Nanotubes ◽  
Pesticide Residues ◽  
Solid Phase Microextraction ◽  
Fruits And Vegetables ◽  
Solid Phase ◽  
Purification And Characterization ◽  
Characterization Methods ◽  
Matrix Solid Phase Dispersion ◽  
Phase Dispersion ◽  
Sorbent Materials

Abstract This review presents the application of carbon nanotubes as sorbent materials in the analysis of pesticide residues in fruits and vegetables. The advantages, limitations, and challenges of carbon nanotubes, with respect to their use in analytical chemistry, are presented. The efficiency of their application as extraction sorbent materials (in terms of LOD, LOQ, linearity, relative recovery, and RSD) in SPE, solid-phase microextraction, multi-plug filtration clean-up, matrix solid-phase dispersion, and the quick, easy, cheap, effective, rugged and safe method is reported. The synthesis, functionalization, purification, and characterization methods of carbon nanotubes are also discussed.

scholarly journals Headspace Solid Phase Microextraction Application for Pesticide Residues in Fruits and Vegetables

2016 ◽  
Vol 2 (2) ◽  
Author(s):  
Abookleesh L Frage , Almrhag M. Omar , Zatout M. Massoud
Keyword(s):  
Sample Preparation ◽  
Solid Phase Microextraction ◽  
Fruits And Vegetables ◽  
High Efficiency ◽  
Solid Phase ◽  
Accurate Determination ◽  
Chemical Properties ◽  
Extraction Process ◽  
Headspace Solid Phase Microextraction

Headspace solid phase microextraction, fundamental& principle with its application on the determination of various pesticides are reviewed in this article. Pesticides extraction as a sample preparation step prior to subsequent analysis is aimed to achieve a reliable and accurate determination of this contaminants residue in food. Fast and high efficiency extraction process with free solvent consumption and overall cost is achieved through headspace solid phase micro extraction. HSPME is an equilibrium process which depends on the physio-chemical properties of the analyte to be extracted. Sample preparation and extraction condition such as fiber coating, temperature, time etc, have a direct impact on the extraction efficiency and sensitivity of headspace technique.

A triazine-based conjugated microporous polymer composite for magnetic solid phase extraction of 5-nitroimidazoles coupled with UPLC-MS/MS for quantification

The Analyst ◽  
2018 ◽  
Vol 143 (23) ◽  
pp. 5744-5753 ◽  
Author(s):  
Wei Yang ◽  
Xia Wu ◽  
Tingting Liu ◽  
Ting Wang ◽  
Xiaohong Hou
Keyword(s):  
Solid Phase Extraction ◽  
Polymer Composite ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Magnetic Solid

A triazine-based conjugated microporous polymer composite for magnetic solid phase extraction of 5-nitroimidazoles coupled with UPLC-MS/MS for quantification.

scholarly journals In Situ Real-Time Tracing of Organophosphorus Pesticides in Apples by Solid-Phase Microextraction with Developed Sampling-Rate Calibration

Molecules ◽  
2019 ◽  
Vol 24 (24) ◽  
pp. 4444 ◽  
Author(s):  
Xiao-Fan Zhang ◽  
Li-Li Zhao ◽  
Ming-Quan Huang ◽  
Xiu-Juan Li ◽  
Si-Yi Pan
Keyword(s):  
Solid Phase Microextraction ◽  
Fruits And Vegetables ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Sampling Rate ◽  
Calibration Method ◽  
Maximum Residue Limits ◽  
In Vivo Analysis

An in situ tracing study based on solid-phase microextraction (SPME) was conducted to investigate the uptake and elimination of organophosphorus pesticides in apples. A matrix-compatible polydimethylsiloxane/poly(styrene-co-divinylbenzene)/polydimethylsiloxane fiber was produced to meet the needs of in situ sampling. The fiber had high extraction ability, good sensitivity and accuracy with respect to the analytes in apple pulp, and could be used 85 times. Although the sampling rate was changing over time, quantification was still achieved by the sampling rate calibration method. Some factors that affect its applicability were studied. The limits of detection were 0.18 ng/g for diazinon and 0.20 ng/g for chlorpyrifos, rather lower than the maximum residue limits of the National Food Safety Standard of China (GB 2763-2016) and the European Commission (Reg.(EU) No 834/2013, 2018/686). The accuracy of in situ SPME quantification was verified by comparing with the results obtained by the traditional liquid–liquid extraction method. In this work, the in situ sampling method is developed using apples, diazinon, and chlorpyrifos as a model system; however, this method can be used for in vivo analysis of fruits and vegetables for nutrition and safety monitoring.

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