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Special Issue "Analytical Methods for Toxics Determination"

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

Deadline for manuscript submissions: 30 September 2019

Special Issue Editors

Guest Editor
Prof. Dr. Clinio Locatelli

Alma Mater Studiorum University of Bologna, Department of Chemistry “Giacomo Ciamician”, Via Selmi 2, I-40126 Bologna, Italy
Website | E-Mail
Phone: +39-051-209-94-50
Interests: Analytical methods set up; Environmental field; Food contaminants; Spectroscopy; Voltammetry.
Guest Editor
Prof. Marcello Locatelli

Department of Pharmacy Build B, level 2; University "G. d'Annunzio" of Chieti-Pescara; Via dei Vestini, 31; I-66100 Chieti; Italy
Website | E-Mail
Phone: +3908713554590
Interests: Innovative (micro) extraction procedures (MEPS, FPSE, DLLME, SULLE, MAE, etc.) and hyphenated instrument configurations; Bioactive compounds (drugs, drugs associations, and natural bioactive compounds); Characterization, fingerprints, and method validation; HPLC; Mass spectrometry (MS and MS/MS).
Guest Editor
Prof. Dora Melucci

Department of Chemistry “Giacomo Ciamician”, University of Bologna, Via Selmi 2, I-40126 Bologna, Italy
Website | E-Mail
Interests: Chemometrics; Environmental chemistry; Forensics; Food chemistry; Pharmaceutics.

Special Issue Information

Dear Colleagues,

In recent decades, but especially in recent years, the rapid spread of toxic species has occurred in all matrices. Evidently, these contaminants, both of inorganic and organic origin, are very dangerous pollutants for human health, owing to their bioaccumulation and toxicity. They come from almost all human activities, such as, for example, industries, agriculture, vehicular traffic, and urban heating.

Considering that often these species occur in the various real matrices at extremely low concentrations, the analytical methodologies must evidently show their possible application by verifying the correctness of all the steps: sampling, sample preparation, instrumental measurement, and statistical data processing.

Another extremely important aspect concerns the fact that the development of new analytical methodologies, and the contemporary lack or inadequacy of regulations regarding the determination of toxic species in the most varied matrices, can obviously give to the legislator the possibility to update and improve the above-mentioned regulations.

This Special Issue aims to attract contributions on all aspects linked to the different analytical methods used for the determination of toxic species in the most varied matrices—food, environmental, forensic, biological, and so on—focusing particularly on the fundamental parameters of interest to set-up an analytical procedure, such as precision and trueness (that together give accuracy); the limits of detection and quantification; selectivity; and, especially, sensitivity.

Prof. Dr. Clinio Locatelli
Prof. Marcello Locatelli
Prof. Dora Melucci
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 papers will be 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 1800 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

  • Inorganic toxic species
  • Organic toxic species
  • Analytical methods
  • Chemometrics
  • Practical applications.

Published Papers (1 paper)

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Research

Open AccessArticle
Screen-printed Microsensors Using Polyoctyl-thiophene (POT) Conducting Polymer As Solid Transducer for Ultratrace Determination of Azides
Molecules 2019, 24(7), 1392; https://doi.org/10.3390/molecules24071392
Received: 8 March 2019 / Revised: 30 March 2019 / Accepted: 2 April 2019 / Published: 9 April 2019
PDF Full-text (1403 KB) | HTML Full-text | XML Full-text
Abstract
Two novel all-solid-state potentiometric sensors for the determination of azide ion are prepared and described here for the first time. The sensors are based on the use of iron II-phthalocyanine (Fe-PC) neutral carrier complex and nitron-azide ion-pair complex (Nit-N3) as [...] Read more.
Two novel all-solid-state potentiometric sensors for the determination of azide ion are prepared and described here for the first time. The sensors are based on the use of iron II-phthalocyanine (Fe-PC) neutral carrier complex and nitron-azide ion-pair complex (Nit-N3) as active recognition selective receptors, tetradodecylammonium tetrakis(4-chlorophenyl) borate (ETH 500) as lipophilic cationic additives and poly(octylthiophene) (POT) as the solid contact material on carbon screen-printed devices made from a ceramic substrate. The solid-contact material (POT) is placed on a carbon substrate (2 mm diameter) by drop-casting, followed, after drying, by coating with a plasticized PVC membrane containing the recognition sensing complexes. Over the pH range 6-9, the sensors display fast (< 10 s), linear potentiometric response for 1.0 × 10−2–1.0 × 10−7 M azide with low detection limit of 1.0 × 10−7 and 7.7 × 10−8 M (i.e., 6.2–4.8 ng/ml) for Fe-PC/POT/and Nit-N3/POT based sensors, respectively. The high potential stability and sensitivity of the proposed sensors are confirmed by electrochemical impedance spectroscopy (EIS) and constant-current chronopotentiometry measurement techniques. Strong membrane adhesion and absence of delamination of the membrane, due to possible formation of a water film between the recognition membranes and the electron conductor are also verified. The proposed sensors are successfully applied for azide quantification in synthetic primer mixture samples. Advantages offered by these sensors are the robustness, ease of fabrication, simple operation, stable potential response, high selectivity, good sensitivity and low cost. Full article
(This article belongs to the Special Issue Analytical Methods for Toxics Determination)
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