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Chemosensors
Special Issues
Feature Papers on Section "Analytical Methods, Instrumentation and Miniaturization"
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Feature Papers on Section "Analytical Methods, Instrumentation and Miniaturization"

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Analytical Methods, Instrumentation and Miniaturization".

Deadline for manuscript submissions: 1 June 2025 | Viewed by 3404

Special Issue Editors

Prof. Dr. ZhongYang (Z.-Y.) Cheng

E-Mail Website
Guest Editor
Materials Research and Education Center, Auburn University, Auburn, AL 36849-5341, USA
Interests: sensors including physical, chemical, and biological sensors for engineering and agriculture, actuators and actuation materials; functional materials including electromechanical, magneto-mechanical, and chemo-mechanical ceramics, alloys, and polymers
Dr. Wen Shen

E-Mail Website
Guest Editor
Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL, USA
Interests: biosensors; electrochemical sensors; wearable sensors; implantable sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Advanced analytical methods and instrumentations enable chemical sensors to quantitatively measure different species of interest. In recent years, the miniaturization of chemical sensors has been a research focus to significantly reduce the size, mass, and cost of the sensors and increase their performance, driven by the needs in real-world applications including wearable electronics, medical diagnosis, health monitoring, environmental monitoring, and engineering devices/systems. 

This Special Issue covers all areas in analytical methods, instrumentation, and miniaturization related to the development of high-performance chemical sensors. We invite you to contribute an original research article, review article, or perspective article on a trending or hot topic for peer review and possible publication. All papers in this Special Issue will be collected into a well-promoted printed edition book. Topics of interest include, but are not limited to:

  • Chemical analytical methods and instrumentation;
  • Bioanalytical methods and instrumentation;
  • Optical methods and instrumentation for chemical sensors and biosensors;
  • Surface and interface analysis;
  • Analytical methods and instrumentation for nanotechnology;
  • Miniaturized sensors and systems;
  • Flexible sensors and systems;
  • Nanosensors;
  • Methodologies to enhance the performance of sensors.

Prof. Dr. ZhongYang (Z.-Y.) Cheng
Dr. Wen Shen
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. Chemosensors 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 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

  • chemical sensors
  • biosensors
  • analytical methods
  • instrumentation
  • miniaturization

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

Published Papers (3 papers)

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Research

12 pages, 816 KiB  
Article
Analysis of Solid Formulates Using UV-Visible Diffused Reflectance Spectroscopy with Multivariate Data Processing Based on Net Analyte Signal and Standard Additions Method
by Nicholas Kassouf, Alessandro Zappi, Michela Monticelli and Dora Melucci
Chemosensors 2024, 12(11), 227; https://doi.org/10.3390/chemosensors12110227 - 1 Nov 2024
Viewed by 843
Abstract
Quality control in pharmaceutical manufacturing necessitates rigorous testing and approval, adhering to Current Good Manufacturing Practices before commercialization. The production of solid drugs presents significant industrial challenges regarding uniformity, homogeneity, and consistency. Traditional quality guidelines rely on classical analytical methods such as liquid [...] Read more.
Quality control in pharmaceutical manufacturing necessitates rigorous testing and approval, adhering to Current Good Manufacturing Practices before commercialization. The production of solid drugs presents significant industrial challenges regarding uniformity, homogeneity, and consistency. Traditional quality guidelines rely on classical analytical methods such as liquid chromatography coupled with mass spectrometry. However, the emergence of Process Analytical Technology introduced non-destructive, rapid, and cost-effective methods like UV-Visible Diffuse Reflectance Spectroscopy. The present study aimed to develop a chemometric method for quantifying Active Pharmaceutical Ingredients (APIs) in Neo Nisidine®, a solid mixture drug, using spectrophotometric data. The Net Analyte Signal (NAS) method, combined with standard additions, allowed the creation of a pseudo-univariate standard addition model, overcoming some challenges in solid-phase analysis. Successful quantifications of APIs in ideal laboratory samples and real pharmaceutical tablets were obtained. NAS-based chemometric models showed high precision and reliability, whose results were validated by comparisons with HPLC ones. The study revealed that solid-phase spectrophotometric analyses can be considered a valid alternative to API analyses. Solid-phase analysis offers non-destructive, cost-effective, and environmentally friendly benefits, enabling its integration into pharmaceutical production to improve quality control. Full article
(This article belongs to the Special Issue Feature Papers on Section "Analytical Methods, Instrumentation and Miniaturization")
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10 pages, 1926 KiB  
Communication
Construction of a Miniaturized Detector for Flow Injection Spectrophotometric Analysis
by T. Alexandra Ferreira, Mario Ordaz, Jose A. Rodriguez, M. Elena Paez-Hernandez and Evelin Gutierrez
Chemosensors 2024, 12(10), 216; https://doi.org/10.3390/chemosensors12100216 - 17 Oct 2024
Viewed by 534
Abstract
Analytical instrumentation is essential for chemical analysis in many fields, including biology and chemistry, but it can be costly and inaccessible to many educational institutions because it often requires expensive and sophisticated equipment. To address this issue, there has been growing interest in [...] Read more.
Analytical instrumentation is essential for chemical analysis in many fields, including biology and chemistry, but it can be costly and inaccessible to many educational institutions because it often requires expensive and sophisticated equipment. To address this issue, there has been growing interest in developing new and accessible alternatives. In this study, we developed a low-cost and user-friendly spectrophotometric detector based on an Arduino UNO platform. This detector was coupled with a flow injection analysis system (FIA) and used to quantify the concentration of tartrazine in commercial beverages and candy samples. The proposed miniaturized detector offers an affordable and portable alternative to conventional spectrophotometers. We evaluated the performance of our detector by comparing its results with those obtained using high-performance liquid chromatography (HPLC-DAD), and the accuracy and precision were comparable. The results demonstrate the potential of the Arduino-based spectrophotometric detector as a cost-effective and accessible tool, with potential applications in food science, environmental monitoring, and other fields. Full article
(This article belongs to the Special Issue Feature Papers on Section "Analytical Methods, Instrumentation and Miniaturization")
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19 pages, 2523 KiB  
Article
Development of an Online Instrument for Continuous Gaseous PAH Quantification: Laboratory Evaluation and Comparison with The Offline Reference UHPLC-Fluorescence Method
by Joana Vaz-Ramos, Mathilde Mascles, Anaïs Becker, Damien Bourgain, Audrey Grandjean, Sylvie Bégin-Colin, Franck Amiet, Damien Bazin and Stéphane Le Calvé
Chemosensors 2023, 11(9), 496; https://doi.org/10.3390/chemosensors11090496 - 9 Sep 2023
Viewed by 1456
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental contaminants formed during incomplete combustion or pyrolysis of organic material. The reliable quantification of PAH in airborne samples is still difficult, costly, and time-consuming due to the use of offline techniques, including long sampling on filters/adsorbents, [...] Read more.
Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental contaminants formed during incomplete combustion or pyrolysis of organic material. The reliable quantification of PAH in airborne samples is still difficult, costly, and time-consuming due to the use of offline techniques, including long sampling on filters/adsorbents, laboratory extraction, purification, and concentration steps before analysis. To tackle these drawbacks, this work focused on the development of a fully automatic gas chromatograph (GC) equipped with a flame ionization detector (FID) and a sample preconcentration unit (PC) for gas sampling. This instrument was validated under laboratory-controlled conditions in the range 0–10 ng for 18 PAH. The chromatographic separation was rather satisfactory except for two PAH pairs, which were quantified together. For all compounds, the peak areas increased perfectly with the gaseous PAH concentration (R2 > 0.98), without any significant memory effect between two consecutive analyses. Considering a gaseous sample volume of 1 L, the extrapolated limits of detections (LOD) were in the range 19.9–62.6 ng/m3, depending on the PAH. Its analytical performances were then compared to those of the offline reference UHPLC-fluorescence method, widely used for airborne PAH monitoring. This was also compared with the very few portable or continuously operating instruments. Full article
(This article belongs to the Special Issue Feature Papers on Section "Analytical Methods, Instrumentation and Miniaturization")
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