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Novel Approach for Evaluation of Biological, Food, and Environmental Samples

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Analytical Chemistry".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 2430

Special Issue Editors

REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Politécnico do Porto, 4249-015 Porto, Portugal
Interests: endocrine disruptors; pesticides, flame retardants; synthetic musks; plasticizers; sample preparation
Special Issues, Collections and Topics in MDPI journals
REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Politécnico do Porto, 4249-015 Porto, Portugal
Interests: biomonitoring; plasticizers

Special Issue Information

Dear Colleagues,

This Special Issue is intended to provide a forum for reporting the state of the art of optimization and development of new analytical methods and sample preparation novelties. Biological, food, and environmental samples will be considered from a broad perspective from experts in the fields of biomonitoring, food quality, food safety, health, and environmental research.

We invite researchers to contribute to this Special Issue with original research articles and reviews on a few pertinent topics, including but not limited to:

  • Environmental samples;
  • Biological sample characterization;
  • Food quality;
  • Biomonitoring;
  • Food safety;
  • Micropollutants;
  • Endocrine disruptors;
  • Pesticides;
  • Pharmaceuticals.

Prof. Dr. Valentina Fernandes Domingues
Dr. Luísa Correia-Sá
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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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

  • endocrine disruptors
  • trace elements
  • contaminants
  • antioxidants
  • sample preparation
  • chromatography
  • spectroscopy
  • electrochemistry

Published Papers (2 papers)

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Research

25 pages, 28783 KiB  
Article
Chemical Studies of Multicomponent Kidney Stones Using the Modern Advanced Research Methods
by Weronika Sofińska-Chmiel, Marta Goliszek, Marek Drewniak, Aldona Nowicka, Marcin Kuśmierz, Agnieszka Adamczuk, Paulina Malinowska, Ryszard Maciejewski, Małgorzata Tatarczak-Michalewska and Eliza Blicharska
Molecules 2023, 28(16), 6089; https://doi.org/10.3390/molecules28166089 - 16 Aug 2023
Cited by 1 | Viewed by 1205
Abstract
Defining the kidney stone composition is important for determining a treatment plan, understanding etiology and preventing recurrence of nephrolithiasis, which is considered as a common, civilization disease and a serious worldwide medical problem. The aim of this study was to investigate the morphology [...] Read more.
Defining the kidney stone composition is important for determining a treatment plan, understanding etiology and preventing recurrence of nephrolithiasis, which is considered as a common, civilization disease and a serious worldwide medical problem. The aim of this study was to investigate the morphology and chemical composition of multicomponent kidney stones. The identification methods such as infrared spectroscopy (FTIR), X-ray diffraction (XRD), and electron microscopy with the EDX detector were presented. The studies by the X-ray photoelectron spectroscopy (XPS) were also carried out for better understanding of their chemical structure. The chemical mapping by the FTIR microscopy was performed to show the distribution of individual chemical compounds that constitute the building blocks of kidney stones. The use of modern research methods with a particular emphasis on the spectroscopic methods allowed for a thorough examination of the subject of nephrolithiasis. Full article
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10 pages, 824 KiB  
Article
Development of a Methodology for Determination of Dioxins and Dioxin-like PCBs in Meconium by Gas Chromatography Coupled to High-Resolution Mass Spectrometry (GC-HRMS)
by Iñaki Lacomba, Antonio López, Raquel Hervàs-Ayala and Clara Coscollà
Molecules 2023, 28(13), 5006; https://doi.org/10.3390/molecules28135006 - 26 Jun 2023
Viewed by 892
Abstract
An analytical strategy was applied to investigate polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (dl-PCBs) in newborn meconium samples. The methodology includes extraction by selective pressurized liquid extraction (SPLE), followed by a clean-up multicolumn step. The samples were injected by [...] Read more.
An analytical strategy was applied to investigate polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (dl-PCBs) in newborn meconium samples. The methodology includes extraction by selective pressurized liquid extraction (SPLE), followed by a clean-up multicolumn step. The samples were injected by gas chromatography coupled to a high-resolution mass spectrometer (GC-HRMS). The surrogate recoveries ranged from 68% to 95%, and the average of the limit of quantification (LOQ) ranged from 0.03 to 0.08 pg g−1 wet weight (ww) for PCDD/Fs and 0.2 to 0.88 pg g−1 ww for dl-PCBs. The strategy was applied to 10 samples collected in Valencia (Spain) in 2022. In total, 18 out of 29 analysed congeners were detected in at least one sample, whereas 6 of them were detected in all the samples (OCDD, PCB-123, PCB-118, PCB-105, PCB-167, and PCB-156). The levels for the sum of the 17 congeners of PCDD/Fs and 12 congeners of dl-PCBs in the upper-bound (UB), expressed as picograms of toxic equivalency quantity (TEQ) per gram of ww, ranged from 0.19 to 0.31 pg TEQ g−1 ww. Full article
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