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Gas Chromatography-Mass Spectrometry Paired with Total Vaporization Solid-Phase Microextraction as a Forensic Tool
Published on: May 25, 2021
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A green extraction material - natural cotton fiber for in-tube solid-phase microextraction
Juanjuan Feng1, Sen Han1, Xiangping Ji1
1Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China.
Journal of Separation Science
|January 20, 2019
Summary
Natural cotton fiber offers a green solution for in-tube solid-phase microextraction of polycyclic aromatic hydrocarbons (PAHs). This novel online system provides sensitive and efficient analysis of PAHs in water samples.
Area of Science:
- Analytical Chemistry
- Environmental Science
- Materials Science
Background:
- Polycyclic aromatic hydrocarbons (PAHs) are significant environmental pollutants.
- Efficient and sensitive methods are needed for PAH determination in water.
- Green extraction materials are desirable for sustainable analytical chemistry.
Purpose of the Study:
- To develop a green in-tube solid-phase microextraction (SPME) device using natural cotton fiber.
- To establish an online extraction and detection system for PAHs.
- To evaluate the performance of the cotton fiber-based SPME for trace PAH analysis.
Main Methods:
- Cotton fibers were characterized using scanning electron microscopy.
- A polyetheretherketone (PEEK) tube was packed with cotton fiber to create the extraction device.
- The device was integrated into a high-performance liquid chromatography (HPLC) system for online analysis.
Main Results:
- Optimized conditions yielded sensitive PAH analysis with low limits of detection (0.02-0.05 μg/L).
- The method demonstrated good linearity (0.06-15 μg/L) and high enrichment factors (176-1868).
- Successful application to real water samples (snow and river water) with good recoveries (80-116%) and repeatability (<3.6% and <5.2% RSD).
Conclusions:
- Natural cotton fiber is an effective and green material for in-tube SPME.
- The developed online system offers a sensitive, efficient, and robust method for trace PAH determination.
- This approach is suitable for environmental water monitoring.
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