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Separations
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Development of Materials for Chromatographic Separation
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Development of Materials for Chromatographic Separation

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

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 3932

Special Issue Editors

Prof. Dr. Xiaojing Liang

E-Mail Website
Guest Editor
Lanzhou Institute of Chemical Physics Chinese Academy of Sciences, Lanzhou, China
Interests: new materials and methods for chromatographic analysis of complex systems
Prof. Dr. Yong Guo

E-Mail Website
Guest Editor
Lanzhou Institute of Chemical Physics Chinese Academy of Sciences, Lanzhou, China
Interests: separation and purification of inorganic and organic substances in complex industrial systems

Special Issue Information

Dear Colleagues,

As a separation technique and method, chromatography is widely used in scientific research in the fields of life and environment and has become an important branch of the discipline of analytical chemistry. The chromatographic stationary phase, as the core of the chromatographic separation technique, is the basis on which its development is driven. At present, a series of new chromatographic separation materials such as silica matrix, organic polymer matrix and agarose matrix have been developed. It can be seen that the development of the chromatographic separation technique is closely related to the development of new materials for chromatographic separation. Therefore, in order to solve various separation problems in complex systems, further development of new chromatographic separation materials is necessary for the development of the chromatographic technique.

This Special Issue, entitled “Development of Materials for Chromatographic Separation”, aims to present the latest advancements in the development and application of novel separation materials in chromatographic techniques. Topics include, but are not limited to, the following:

  • The development of separation materials in chromatography (e.g., HPLC, GC, TLC, CEC).
  • Research into synthetic methods of chromatographic separation materials’ development.
  • The development of new chromatographic separation methods.
  • Chromatographic separation materials/methods for separating chiral compounds/isomers/ homologues, etc.
  • Chromatographic separation materials/methods for the analysis of trace targets in plant/food/environment and biomedical samples.

Original high-quality research papers as well as reviews related to the areas mentioned above are most welcome.

Prof. Dr. Xiaojing Liang
Prof. Dr. Yong Guo
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

  • stationary phases in chromatography (e.g., HPLC, GC, TLC, CEC)
  • chromatographic separation techniques
  • HILIC chromatography
  • mixed-mode chromatography
  • efficient and fast chromatographic separation
  • chiral chromatographic separation
  • chromatographic separation of complex samples

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Published Papers (2 papers)

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Research

21 pages, 3743 KiB  
Article
A Rule-Based Automated Chemical Recognition Algorithm for a Multi-Cell Multi-Detector Micro Gas Chromatograph
by Qu Xu, Yutao Qin and Yogesh B. Gianchandani
Separations 2023, 10(11), 555; https://doi.org/10.3390/separations10110555 - 31 Oct 2023
Cited by 1 | Viewed by 1792
Abstract
A chemical recognition algorithm is an integral part of any autonomous microscale gas chromatography (µGC) system for automated chemical analysis. For a multi-detector µGC system, the chemical analysis must account for the retention time of each chemical analyte as well as the relative [...] Read more.
A chemical recognition algorithm is an integral part of any autonomous microscale gas chromatography (µGC) system for automated chemical analysis. For a multi-detector µGC system, the chemical analysis must account for the retention time of each chemical analyte as well as the relative response of each detector to each analyte, i.e., the detector response pattern (DRP). In contrast to the common approaches of heuristically using principal component analysis and machine learning, this paper reports a rule-based automated chemical recognition algorithm for a multi-cell, multi-detector µGC system, in which the DRP is related to theoretical principles; consequently, this algorithm only requires a small amount of calibration data but not extensive training data. For processing both the retention time and the raw DRP, the algorithm applies rules based on expert knowledge to compare the detected peaks; these rules are located in a customized software library. Additionally, the algorithm provides special handling for chromatogram peaks with a small signal-to-noise ratio. It also provides separate special handling for asymmetrical peaks that may result from surface adsorptive analytes. This work also describes an experimental evaluation in which the algorithm used the relative response of two complementary types of capacitive detectors as well as a photoionization detector that were incorporated into the µGC system of interest. In these tests, which were performed on chromatograms with 21–31 peaks for each detector, the true positive rate was 96.3%, the true negative rate was 94.1%, the false positive rate was 5.9%, and the false negative rate was 3.7%. The results demonstrated that the algorithm can support µGC systems for automated chemical screening and early warning applications. Full article
(This article belongs to the Special Issue Development of Materials for Chromatographic Separation)
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9 pages, 1341 KiB  
Article
Study of Efficiency of Capacity Gradient Ion-Exchange Stationary Phases
by Szabolcs Horváth, Diána Lukács, Evelin Farsang and Krisztián Horváth
Separations 2023, 10(1), 14; https://doi.org/10.3390/separations10010014 - 28 Dec 2022
Cited by 5 | Viewed by 1673
Abstract
Highly efficient columns are necessary for the modern analytical applications of liquid chromatography. In this work, the separation efficiency of ion-exchange capacity gradient stationary phases combined with eluent concentration gradient was studied by a theoretical approach. In the course of our work three [...] Read more.
Highly efficient columns are necessary for the modern analytical applications of liquid chromatography. In this work, the separation efficiency of ion-exchange capacity gradient stationary phases combined with eluent concentration gradient was studied by a theoretical approach. In the course of our work three different scenarios of capacity gradients were used with different shapes (linear, convex and concave). The resolutions of different gradient columns were calculated for each scenario. As a reference, a uniform column was considered, which had the same analysis time as the non-uniform column. In the case of separation of ions with same charges, the gradient column offered only a marginal advantage compared to the uniform column due to the bandwidth compression caused by the capacity gradient. In the case of ions with different charges, however, the advantage of the gradient column was more significant. This was mainly due to the increased retention time difference of solutes. Ion-exchange capacity gradient columns may be a new way to separate ions more efficiently. Full article
(This article belongs to the Special Issue Development of Materials for Chromatographic Separation)
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