Advanced Extraction and Microextraction Techniques and Their Applications in Sample Preparation

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Chromatographic Separations".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 532

Special Issue Editors

School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
Interests: sample preparation; (micro) extraction techniques; green analytical chemistry; food and biological analysis

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Guest Editor
College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
Interests: separation media (carbon-based, silicon-based and other polymeric materials used as sorbents); sample pretreatment techniques (magnetic solid-phase extraction, dispersive solid-phase extraction and other solid-phase microextraction techniques

Special Issue Information

Dear Colleagues,

The significance of sample preparation in analytical chemistry cannot be overstated, as it directly impacts the accuracy, sensitivity, and reliability of analytical results. As researchers continually strive for enhanced sensitivity and selectivity in analytical methods, the development of cutting-edge extraction and microextraction techniques has become paramount.

This Special Issue brings together a diverse collection of original research articles and reviews that explore the latest advances in extraction and microextraction methodologies. The articles cover a wide range of sample types, including environmental, biological, pharmaceutical, and food samples. By employing innovative and efficient extraction approaches, researchers are overcoming challenges related to complex matrices, trace analytes, and limited sample volumes.

The featured articles delve into various extraction techniques, such as solid-phase microextraction, liquid-phase microextraction, dispersive liquid–liquid microextraction, and accelerated solvent extraction, among others. The application of these techniques in tandem with modern analytical instruments, including mass spectrometers, chromatographs, and spectroscopy systems, has revolutionized the field of sample preparation.

We hope that this issue serves as an insightful resource, inspiring further advancements in sample preparation methodologies and fostering new ideas for analytical research.

Dr. Di Chen
Dr. Haobo Zheng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Separations is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • sample preparation
  • extraction techniques
  • microextraction techniques
  • solid-phase extraction
  • liquid-phase extraction
  • green analytical chemistry
  • environmental analysis
  • food analysis
  • biological analysis
  • sorbents
  • separation media

Published Papers (1 paper)

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Research

13 pages, 3640 KiB  
Article
Synthesis of Quaternary-Ammonium-Lignin-Based Ionic Liquids and Comparison of Extraction Behavior of Co(II) and Ni(II) with 2-Ethylhexyl Phosphoric Acid Mono-2-Ethylhexyl Ester
by Guijiang Li and Wenze Xu
Separations 2024, 11(4), 116; https://doi.org/10.3390/separations11040116 - 12 Apr 2024
Viewed by 340
Abstract
The escalating demand for cobalt in modern industry necessitates the recycling or extraction of this resource for sustainable development. Despite the abundance of lignin in nature, its utilization remains low, highlighting the need to enhance its value-added potential. This study focuses on the [...] Read more.
The escalating demand for cobalt in modern industry necessitates the recycling or extraction of this resource for sustainable development. Despite the abundance of lignin in nature, its utilization remains low, highlighting the need to enhance its value-added potential. This study focuses on the synthesis of quaternary ammonium lignin (QAL) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (P507) as ionic liquid (QP–IL) compounds for the extraction of metal ions. A comparison of the extraction behavior of Co(II) and Ni(II) from chloride solution between QP–IL and P507 revealed varying extraction ratios under different conditions, with QP–IL demonstrating a higher cobalt extractability than P507. Furthermore, under identical conditions, QP–IL exhibited superior Co/Ni separation performance (βCo/Ni) compared to P507. Ultimately, QP–IL proved to be more effective than P507 in separating cobalt from mixed solutions. Full article
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