Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
3.5
Journals
Processes
Special Issues
Various Materials and Technologies for Hazardous Substances Determination
share announcement

Various Materials and Technologies for Hazardous Substances Determination

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Sustainable Processes".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 5954

Special Issue Editors

Prof. Dr. Agnieszka Zgoła-Grześkowiak

E-Mail Website
Guest Editor
Institute of Chemistry and Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60 965 Poznan, Poland
Interests: sample preparation; microextraction; endocrine disrupting compounds; environmental chemistry; food analysis; biodegradation; LC-MS/MS
Special Issues, Collections and Topics in MDPI journals
Dr. Justyna Werner

E-Mail Website
Guest Editor
Department of General and Analytical Chemistry, Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
Interests: environmental pollution; microextraction; ionic liquids; deep eutectic solvents; high-performance liquid chromatography
Dr. Tomasz Grześkowiak

E-Mail Website
Guest Editor
Institute of Chemistry and Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland
Interests: sample preparation; microextraction; endocrine disrupting compounds; environmental chemistry; biodegradation; LC-MS/MS; GC
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The presence of hazardous substances in the environment is growing in many countries due to the increase in industrial and agricultural activities. Therefore, the determination of such chemicals in different matrices is very important for assessing the risk caused by them to humans, animals, and plants. As a result, there is a great demand for the introduction of new analytical methodologies applicable for their determination. This development is often aimed at simplification of analytical methods and lowering their influence on the environment. The rules of green analytical chemistry are often taken into account by many scientists who are aware of their own influence on the environment.

This special issue on “Various Materials and Technologies for Hazardous Substances Determination” seeks high-quality works focusing on the latest novel advances in new methods for the determination of hazardous substances. Topics include, but are not limited to:

  • Newly synthesized sorbents, e.g. sorbents for solid-phase microextraction;
  • Newly synthesized extracting solvents, e.g. ionic liquids, surfactants, deep eutectic solvents, and switchable-hydrophilicity solvents;
  • Proposals for new sample preparation techniques and development of the existing ones;
  • Development of green sample preparation procedures.

Dr. Agnieszka Zgoła-Grześkowiak
Dr. Justyna Werner
Dr. Tomasz Grześkowiak
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. Processes 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 2400 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

  • chemicals
  • hazardous substances
  • analytical methods
  • environment
  • sorbents
  • solvents
  • ionic liquids
  • deep eutectic solvents
  • materials and technologies
  • sample preparation

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

14 pages, 8269 KiB  
Article
Separation and Enrichment of Selected Polar and Non-Polar Organic Micro-Pollutants—The Dual Nature of Quaternary Ammonium Ionic Liquid
by Justyna Ziemblińska-Bernart, Iwona Rykowska and Iwona Nowak
Processes 2022, 10(8), 1636; https://doi.org/10.3390/pr10081636 - 18 Aug 2022
Viewed by 1431
Abstract
In this study, the dual nature of quaternary ammonium ionic liquid–didecyldimethylammonium perchlorate, [DDA][ClO4], was evaluated. A novel and sensitive in situ ionic liquid dispersive liquid–liquid microextraction method (in situ IL-DLLME) combined with magnetic retrieval (MR) was applied to enrich and separate [...] Read more.
In this study, the dual nature of quaternary ammonium ionic liquid–didecyldimethylammonium perchlorate, [DDA][ClO4], was evaluated. A novel and sensitive in situ ionic liquid dispersive liquid–liquid microextraction method (in situ IL-DLLME) combined with magnetic retrieval (MR) was applied to enrich and separate selected organic micro-pollutants, both polar and non-polar. The magnetic support relied on using unmodified magnetic nanoparticles (MNPs) prepared by the co-precipitation of Fe2+/Fe3+ (Fe3O4). The separation technique was on-lined with high-performance liquid chromatography (HPLC–DAD) verified by inverse gas chromatography. An anion exchanger, NaClO4, was added to form an in situ hydrophobic IL. The fine droplets of [DDA][ClO4], molded in aqueous samples, functioned as an extractant for isolating the studied compounds. Then the carrier MNPs were added to separate the IL from the water matrix. The supernatant-free sample was desorbed in acetonitrile (MeCN) and injected into the HPLC system. The applicability of [DDA][ClO4] as an extraction solvent in the MR in situ IL-DLLME method was checked by the selectivity parameters (Sij∞) at infinite dilution. The detection limit (LOD) ranged from 0.011 to 0.079 µg L−1 for PAHs and from 0.012 to 0.020 µg L−1 for benzophenones. The method showed good linearity with correlation coefficients (r2) ranging from 0.9995 to 0.9999. Full article
(This article belongs to the Special Issue Various Materials and Technologies for Hazardous Substances Determination)
►▼ Show Figures

Figure 1

12 pages, 1530 KiB  
Article
Preparation of a Novel Solid Phase Microextraction Fiber for Headspace GC-MS Analysis of Hazardous Odorants in Landfill Leachate
by Zonghao Yu, Ruipeng Yu, Shengfang Wu, Weijie Yu and Qijun Song
Processes 2022, 10(6), 1045; https://doi.org/10.3390/pr10061045 - 24 May 2022
Cited by 3 | Viewed by 1674
Abstract
The practice of odorant analysis can often be very challenging because odorants are usually composed of a host of volatile organic compounds (VOCs) at low concentrations. Preconcentration with solid phase microextraction (SPME) is a conventional technique for the enrichment of these volatile compounds [...] Read more.
The practice of odorant analysis can often be very challenging because odorants are usually composed of a host of volatile organic compounds (VOCs) at low concentrations. Preconcentration with solid phase microextraction (SPME) is a conventional technique for the enrichment of these volatile compounds before analysis by headspace gas chromatography-mass spectrometry (GC-MS). However, commercially available SPME products usually bear the defects of weak mechanical strength and high cost. In this work, novel SPME fibers were prepared by a one-pot synthesis procedure from divinylbenzene (DVB), porous carbon powder (Carbon) and polydimethylsiloxane (PDMS). Factors that influence the extraction efficiency, such as extraction temperature, extraction time, salting effects, pH, stirring rate, desorption temperature and time, were optimized. VOCs in landfills pose a great threat to human health and the environment. The new SPME fibers were successfully applied in the analysis of VOCs from the leachate of a cyanobacteria landfill. Quantification methods of major odor contributors were established, and a good linearity (r > 0.998) was obtained, with detection limits in the range of 0.30–0.50 ng/L. Compared to commercial SPME fibers, the new material has higher extraction efficacy and higher precision. Hence, it is suitable for the determination of hazardous odorants of various sources. Full article
(This article belongs to the Special Issue Various Materials and Technologies for Hazardous Substances Determination)
►▼ Show Figures

Figure 1

14 pages, 9807 KiB  
Article
Deep Eutectic Solvent-Based Coating Sorbent for Preconcentration of Formaldehyde by Thin-Film Solid-Phase Microextraction Technique
by Justyna Werner, Agnieszka Zgoła-Grześkowiak and Tomasz Grześkowiak
Processes 2022, 10(5), 828; https://doi.org/10.3390/pr10050828 - 22 Apr 2022
Cited by 7 | Viewed by 2031
Abstract
A thin-film solid-phase microextraction method with a sorbent composed of a deep eutectic solvent was developed for the preconcentration of formaldehyde from river and lake water samples. Four new deep eutectic solvents (DESs) were synthesized, each in molar ratios 1:1, 1:2, and 1:3. [...] Read more.
A thin-film solid-phase microextraction method with a sorbent composed of a deep eutectic solvent was developed for the preconcentration of formaldehyde from river and lake water samples. Four new deep eutectic solvents (DESs) were synthesized, each in molar ratios 1:1, 1:2, and 1:3. Among prepared compounds, the greatest efficiency in the proposed method of preconcentration of formaldehyde derivatized with Nash reagent was demonstrated by DES-3 consisting of benzyldimethylhexadecylammonium chloride and lauric acid, in a molar ratio of 1:3. For the proposed method, the parameters affecting the extraction efficiency of formaldehyde were optimized (including the choice of DES-based sorbent and desorption solvent as well as the sample volume and pH, the salting-out effect, the extraction time, and the desorption time). Under optimal conditions, the proposed method achieved good precision between 3.3% (for single sorbent) and 4.8% (for sorbent-to-sorbent) as well as good recovery ranging from 78.0 to 99.1%. The limits of detection and quantitation were 0.15 ng mL−1 and 0.50 ng mL−1, respectively. The enrichment factor was equal to 178. The developed method was successfully applied to determine formaldehyde in environmental water samples. Full article
(This article belongs to the Special Issue Various Materials and Technologies for Hazardous Substances Determination)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop