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Recent Trends in Analytical Chemistry in Brazil

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

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 1877

Special Issue Editor


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Guest Editor
Department of Natural Sciences, Federal University of São João del-Rei, São João del-Rei, Minas Gerais 36301-160, Brazil
Interests: sample preparation; analytical chemistry; capillary electrophoresis; chromatography; mass spectrometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Analytical chemistry is a science that interfaces with many other chemical knowledge areas, playing an important role in our society, such as in drug manufacturing and its quality control, drug therapeutic monitoring, environmental monitoring, medical diagnostics, food production and quality control, and forensic surveys. Analytical chemistry is directly related to creating new knowledge so that chemical analysis can be improved to respond to increasing or new demands. In this sense, analytical chemistry in Brazil has made great advances in the most diverse areas, and to assemble these findings, this Special Issue plans to show a collection of high-quality research articles on recent trends in analytical chemistry in Brazil.

Researchers are welcome to contribute in all areas of analytical chemistry, including analytical methodology, techniques, and instrumentation in both fundamental and applied research topics. Some fields include, but are not limited to: chromatography, capillary electrophoresis, mass spectrometry, sample preparation, microfluidic, electrochemistry, spectroscopy, and flow analysis.

Prof. Dr. Keyller Bastos Borges
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 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

  • chemometric
  • mass spectrometry
  • chromatography
  • capillary electrophoresis
  • quality control
  • sample preparation
  • phytochemistry
  • proteolomic
  • electrochemistry
  • microfluidic
  • flow analysis

Published Papers (1 paper)

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Research

15 pages, 5592 KiB  
Article
Modified and Optimized Glass Electrode for pH Measurements in Hydrated Ethanol Fuel
by Natalia Cambiaghi Atilio, Fernando Luis Fertonani and Elcio Cruz de Oliveira
Molecules 2022, 27(22), 8048; https://doi.org/10.3390/molecules27228048 - 19 Nov 2022
Cited by 1 | Viewed by 1275
Abstract
One of the quality control parameters of ethanol fuel is pH, established by the Brazilian standard ABNT NBR 10891, whose scope is specific for hydrated ethanol fuel, and by the American standard ASTM D 6423, which focuses on anhydrous ethanol fuel. This study [...] Read more.
One of the quality control parameters of ethanol fuel is pH, established by the Brazilian standard ABNT NBR 10891, whose scope is specific for hydrated ethanol fuel, and by the American standard ASTM D 6423, which focuses on anhydrous ethanol fuel. This study presented a modified and optimized structure using a single solvent, both for the glass electrode and the external reference electrode, to minimize the presence of the liquid junction potential for measuring the pH of hydrated ethanol fuel. The Box–Behnken design enabled us to determine the optimal condition expected for the new measurement system, which was compared with the systems proposed by the standard references and the turning range of acid–base indicators using parametric and nonparametric tests. The results revealed that the pH values obtained by the different systems are statistically different, and that only the values obtained by this proposal are suitable for the pH range found by the indicators. The optimized electrode presented an adequate response sensitivity to the Nernst equation, having an operational behavior adequate for the modified and optimized glass electrode for pH measurements in hydrated ethanol fuel. Full article
(This article belongs to the Special Issue Recent Trends in Analytical Chemistry in Brazil)
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