A density-tunable liquid-phase microextraction system based on deep eutectic solvents for the determination of polycyclic aromatic hydrocarbons in tea, medicinal herbs and liquid foods

2021 ◽  
pp. 129331
Author(s):  
Wenwen Deng ◽  
Anqi Huang ◽  
Qutong Zheng ◽  
Long Yu ◽  
Xiao Li ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Liquid Phase ◽  
Aromatic Hydrocarbons ◽  
Deep Eutectic Solvents ◽  
Medicinal Herbs ◽  
Liquid Phase Microextraction ◽  
Liquid Foods ◽  
Polycyclic Aromatic

scholarly journals Detection of Polycyclic Aromatic Hydrocarbons in Water Samples by Annular Platform-Supported Ionic Liquid-Based Headspace Liquid-Phase Microextraction

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Xiaojie Sun ◽  
Jie Tan ◽  
Haiyan Ding ◽  
Xiaojie Tan ◽  
Jun Xing ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Liquid Phase ◽  
Aromatic Hydrocarbons ◽  
Extraction Temperature ◽  
Liquid Phase Microextraction ◽  
Extraction Solvent ◽  
Polycyclic Aromatic ◽  
Seawater Samples ◽  
Solvent Volume

In this paper, a new method of annular platform-supported headspace liquid-phase microextraction (LPME) was designed using ionic liquid as an extraction solvent, wherein extraction stability and efficiency were improved by adding an annular platform inside the extraction bottle. The ionic liquid 1-silicyl-3-benzylimidazolehexafluorophosphate was first synthesized and proved to be an excellent extraction solvent. Coupled with liquid chromatography, the proposed method was employed to analysis of polycyclic aromatic hydrocarbons (PAHs) in water and optimized in aspects of extraction temperature, extraction solvent volume, extraction time, pH, stirring rate, and salt effect of solution. The results indicated that this method showed good linearity (R2 > 0.995) within 0.5 µg·L−1 to 1000 µg·L−1 for PAHs. The method was more suitable for extraction of volatile PAHs, with recoveries from 65.0% to 102% and quantification limits from 0.01 to 0.05 µg·L−1. It has been successfully applied for detection of PAHs in seawater samples.

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