Research on Novel Separation Media and Separation/Analysis Technologies

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

Deadline for manuscript submissions: 20 March 2026 | Viewed by 754

Special Issue Editors


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Guest Editor
Department of Chemistry, Wuhan University, Wuhan 430072, China
Interests: research and development of new separation media and separation analysis technologies; food safety analysis
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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Special Issue Information

Dear Colleagues,

With the rapid development of life science, environmental science, food safety, pharmacy, and synthetic chemistry, the efficient and rapid separation and analysis technology has attracted increasing attention.

This Special Issue brings together a diverse collection of original research articles and reviews that explore the latest advances in separation and analytical methodologies. The articles cover the development of various separation media, separation technologies, and the analytical methods of a wide range of sample types, including environmental, biological, pharmaceutical, and food samples.

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

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

Dr. Qiongwei Yu
Dr. Di Chen
Guest Editors

Manuscript Submission Information

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Keywords

  • gas phase chromatography
  • liquid phase chromatography
  • supercritical fluid chromatography
  • separation
  • purification
  • adsorption
  • identification
  • solid-phase extraction
  • liquid-phase extraction
  • derivatization

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Published Papers (1 paper)

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Research

12 pages, 1504 KB  
Article
Solid-Phase Extraction Combined with Digital Image Colorimetry for the Analysis of Lead in Water Samples
by Wenying Wu, Zhen Ma, Xu Jing and Xinyuan Bi
Separations 2025, 12(11), 319; https://doi.org/10.3390/separations12110319 - 15 Nov 2025
Viewed by 483
Abstract
In this study, we developed a rapid method for determining lead(II) by integrating solid-phase extraction with digital image colorimetry to reduce the time and labor required for the analysis of lead(II) in water samples. The solid-phase extraction column was packed with cellulose as [...] Read more.
In this study, we developed a rapid method for determining lead(II) by integrating solid-phase extraction with digital image colorimetry to reduce the time and labor required for the analysis of lead(II) in water samples. The solid-phase extraction column was packed with cellulose as a bio-based adsorbent, which facilitated adsorption and enrichment of lead(II) during sample loading. The elution step, which is time-consuming and solvent-intensive, was eliminated from the procedure. An aqueous solution of sodium rhodizonate was added to react with lead(II), forming a red–brown complex. The color intensity was quantified using a smartphone-based digital image colorimetry. The method showed good linearity in the range of 0.01–0.8 mg L−1 with R2 > 0.99. In tap, river, and spring water, the recovery was 93.5% to 97.5% with a relative standard deviation of 1.7–4.8%. Five complementary greenness assessment tools confirmed the environmental friendliness of the method. This rapid pretreatment and detection technique can be applied to analyzing lead(II) in aqueous samples. Full article
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