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Separations
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Selected Papers from the 1st International Online Conference on Separations...
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Selected Papers from the 1st International Online Conference on Separations (IOCS2025)

A special issue of Separations (ISSN 2297-8739).

Deadline for manuscript submissions: 30 December 2026 | Viewed by 890

Editor

Dr. Grzegorz Boczkaj

grade E-Mail Website
Guest Editor
Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland
Interests: environmental remediation; advanced oxidation process; wastewater treatment; deep eutectic solvents
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is my great pleasure to welcome you to the 1st International Online Conference on Separations (IOCS2025), organized by MDPI. This inaugural gathering brings together researchers, professionals, and industry experts from around the world to explore the latest advancements in the dynamic field of separation science. Our virtual platform enables global accessibility and encourages the sharing of insights, techniques, and innovations that drive progress across various domains of separation science.

We welcome submissions from conference participants of the conference, with the aim being to publish selected extended versions of the papers presented in this Special Issue of Separations.

The IOCS2025 will explore a diverse range of cutting-edge topics, including extraction, chromatography, green analytical chemistry, sorbents, sample preparation, and industrial applications. With these focus areas, the conference promises to provide a comprehensive overview of the methods and materials that are shaping the future of separation techniques.

Our program is organized into six specialized sessions:

S1. Analysis of Natural Products and Pharmaceuticals;
S2. Analysis of Food and Beverages;
S3. Materials in Separation Science;
S4. Chromatographic Separations;
S5. Separation Engineering;
S6. Environmental Separations.

Each session provides a unique opportunity to delve into specific aspects of separation science, examining both fundamental principles and practical applications.

We look forward to the lively discussions and collaborations that will emerge from this gathering and to the shared commitment to advancing our field through innovation and sustainable practices. Thank you for joining us for this exciting event, and we wish you a productive and inspiring conference experience.

Dr. Grzegorz Boczkaj
Guest Editor

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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • green sample preparation
  • green solvents
  • chromatographic analysis
  • liquid chromatography
  • separation engineering
  • supercritical fluid
  • water treatment
  • resource recovery
  • membrane
  • adsorption

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

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Review

40 pages, 8198 KB  
Review
NMR Spectroscopy in Complex Mixture Analysis and Structure Elucidation of Natural Products: Rethinking the Need for Separations
by Ioannis P. Gerothanassis
Separations 2026, 13(6), 184; https://doi.org/10.3390/separations13060184 - 22 Jun 2026
Cited by 1 | Viewed by 372
Abstract
Qualitative and quantitative analysis of complex mixtures and structure elucidation is generally impeded by the intrinsic complexity of the NMR spectra and the extensive signal overlap. The conventional approach to characterizing individual metabolites from complex crude extracts of natural products relies on multistep [...] Read more.
Qualitative and quantitative analysis of complex mixtures and structure elucidation is generally impeded by the intrinsic complexity of the NMR spectra and the extensive signal overlap. The conventional approach to characterizing individual metabolites from complex crude extracts of natural products relies on multistep separation workflows employing diverse liquid chromatographic approaches and/or hyphenated techniques, which combine online integration of NMR with separation methods and other forms of spectroscopy. In recent decades, considerable efforts have been devoted to NMR applications in crude extracts without previous separation and isolation of the individual analytes. We present herein a critical overview of several NMR applications using chemical shift ranges of common organic functional groups, which can provide significant resolution advantages under specific experimental conditions. Particular emphasis is placed on: (i) characteristic chemical shift regions of strongly deshielded phenol OH groups, aldehyde CHO groups, hydroperoxide C-O-O-H groups and olefinic protons in conjugated double bonds; (ii) the advantages of using 13C chemical shift ranges through 2D 1H-13C HSQC and HMBC experiments of strongly deshielded phenol OH groups, aldehyde CHO groups, hydroperoxide groups, conjugated double bonds, and deshielded aliphatic CH groups; (iii) selective 1D NMR-spin chromatography techniques (1D TOCSY, 1D NOE); (iv) multiple suppression of strong resonances for minor analyte identification and (v) band-selective excitation techniques for minor analyte identification and quantification. The complementary contributions of statistical heterospectroscopy and computational chemical shift prediction are also considered, together with a brief assessment of the NMR experimental parameters and performance characteristics. Full article
(This article belongs to the Special Issue Selected Papers from the 1st International Online Conference on Separations (IOCS2025))
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