Volume: 10

Issue: 41


This is a Special Edition on the 7th Uruguayan Congress of Analytical Chemistry (CUQA 7). This issue contains an Interview with Dr. Manuel Miró from the University of the Balearic Islands (Spain), a Point of View written by Dr. Mariela Pistón from Universidad de la República (Uruguay), and a Letter authored by Dr. Ignacio Machado from Universidad de la República (Uruguay). This special edition also features four Articles and two Technical Notes authored by some of the CUQA–7 participants. In addition, the reader will find features on scientific meetings, sponsor reports & releases, book notices and a calendar of events.

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What is the Best Definition for (Bio)Analytical Chemistry?

Prof. Dr. Ignacio Machado
Guest Editor of this Special Edition
Faculty of Chemistry, Universidad de la República, Montevideo, Uruguay

“…analytical chemists do not merely provide results; they also develop strategies to measure different chemical properties. Furthermore, they spend an enormous amount of time interpreting the obtained data. Thus, considering the vast variety of works involving analytical chemistry, a more comprehensive definition of the discipline is required.”

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Professor Manuel Miró, a researcher with an extensive and prestigious academic career, kindly spoke to BrJAC

Prof. Dr. Manuel Miró
University of the Balearic Islands, Spain

“I do feel impressed by the quality of the research of many Brazilian analytical chemist groups working on cutting-edge technologies, such as point-of-care sensing devices, omics techniques, nanotechnology, and advanced instrumentation.” 

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Point of View

How has the pandemic accelerated the transformation of Analytical Chemistry education from Generation Z to Alpha?

Prof. Dr. Mariela Pistón
Universidad de la República, Uruguay

“I would like to share my experience on how the pandemic irreversibly accelerated the use of digital tools, not to get closer to Generation Z, but without realizing it, reaching a transition to Generation Alpha (those born in the 2010s), despite the fact that they have not yet arrived at university.”

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Metallomics as an essential analytical tool for the development of potential metallodrugs

Prof. Dr. Ignacio Machado
Universidad de la República, Uruguay

“Metallomics integrates research related to biometals, along with other disciplines such as genomics, proteomics, metabolomics, and bioinorganic chemistry. It is defined as the study of the metallome, the interactions and functional connections of metal ions or species with genes, proteins, metabolites, and other biomolecules in biological systems.”

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Nutritional and Antioxidant Properties of South American Moringa stenopetala
Florencia Tissot, Maite Cuadrado, Jessica Santander, Julia Torres, Ignacio Machado

The nutritional value of South American Moringa stenopetala was assessed in this work, giving some deeper insight into the expected biological accessibility of the main nutrients present in raw leaves and prepared infusions. Metal ions were determined by FAAS; L-ascorbic acid, leucine, and tryptophan by LC-DAD; rutin, isoquercitrin and neochlorogenic acid by LC-ESI-MS/MS.

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Development of a Green Methodology for the Determination of Artisanal Danbo Cheese Quality Parameters
Lucía Falchi, Mariela Pistón, Gabriela Casarotto, Silvana Carro, Cecilia Cajarville, Fiorella Iaquinta

A simple and fast method for the simultaneous determination of chloride and lactic acid in artisanal Danbo cheese was developed and validated. The proposed methodology combined a sample treatment using only ultrapure water as an extracting agent and ion chromatography with suppressed conductivity for the detection of the analytes.

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Phosphate Interference in the Determination of Total Arsenic in Potatoes / Development of a Novel Method for Surveillance Analysis
Ramiro Pérez Zambra, Alexandra Sixto, Mariela Pistón, Alicia Mollo

An alternative methodology for determining arsenic in potatoes using hydride generation microwave induced plasma optical emission spectrometry was developed. Limit of detection was 0.0030 mg kg-1 in fresh potatoes. The developed method is a robust, simple and low-cost alternative for total arsenic safe monitoring of this highly consumed worldwide vegetable.

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Evaluation of the Effect of Silylation in the Development of an Analytical Method for the Determination of UV Filters and Hormones by GC-MS
Jean Paulo da Rosa Coll, Michele Espinosa da Cunha, Maria Alice da Silva Amaral, Maurício Campesato Padilha, Gabriel Milton Gonçalves da Silva, Daniel Ricardo Arsand, Pedro José Sanches Filho

The objective of this work was to optimize a chromatographic method, combining derivatization (silylation) with MSTFA and analysis by GC-MS, for the determination of hormones and UV filters selectively, evaluating the effect of derivatization on the chromatographic response. The method developed for the qualitative analysis (SCAN mode) allowed the identification of the analytes more accurately, with similarities of the spectra superior to 80%.

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Technical Notes

Evaluations of Sisal Fiber as Biosorbent for online Preconcentration and Determination of Cu and Mn coupled to MP AES using the Analytical Greenness Metric Approach
Javier Silva, Mariela Pistón

A flow injection system coupled to microwave plasma AES was validated for the online preconcentration of Mn and Cu using a biosorbent. Considering the antecedents of impregnation of the sisal fiber with alizarine fluorine blue (AFB), a comparison of the figures of merit of both methods was performed concluding that impregnating the sisal fiber with AFB does not lead to an improvement. The use of sisal fiber without the need to impregnate with a reagent turned out to be an efficient and very cheap biosorbent with up to 350 determinations, not requiring a replacement of the packing. Applying the AGRRE tool, the greenness of both methods was evaluated.

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Evaluation of the Adsorbent Potential of Biochar obtained by Pyrolysis to remove Emerging Contaminants
Maria Alice F. S. Amaral, Mirian D. Fusinato, Michele E. da Cunha, Jean Paulo R. Coll, João Henrique G. L. Lacerda, Pedro José Sanches Filho

The objective of this study was to characterize and evaluate the adsorbent potential of biochar obtained by rice husk pyrolysis in the removal of hormones and sunscreens from water samples considered as emerging contaminants. The novelty of this study lies in the fact that we used an abundant residue, rice husk in the region and in the world, to obtain an adsorbent without additional activation processes. The application of this in the removal of emerging contaminants represents an efficient and low-cost alternative.

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BrJAC promoted a Panel Session to Celebrate the achievement of Journal Impact Factor2022 of 0.7

On Sept. 27, 2023, BrJAC held a panel session with conferences by Dr. Arruda, BrJAC's editor-in-chief, Dr. Kubota the BrJAC's first editor-in-chief, Dr. Boniek Vaz, the 2023 "Young Talent in Analytical Chemistry" award winner, and Déborah Dias (Clarivate). At the end, there was a round table on “Open Access Scientific Journals” by Dr. Arruda, Dr. Carrilho, Dr. Hantao and Dr. Kubota.

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7th Uruguayan Congress of Analytical Chemistry (CUQA 7)

The 7th CUQA had approximately 200 participants from all around the country, as well as 40 foreign participants from Argentina, Brazil, Chile, and Perú. In this edition, 9 sessions with 7 lectures, 18 oral presentations, 110 poster presentations, and several social integration activities were held.

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The 46th Annual Meeting of the Brazilian Chemical Society had “Chemistry: Linking Sciences and Neutralizing Inequalities” as its Theme

This meeting took place after the COVID-19 pandemic had cooled down, so this event was very large because the chemical community answered the call for registration. Many sponsors were also present and were very enthusiastic about the large number of visitors to their stands.

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The 3rd Workshop on Inorganic Mass Spectrometry

The event had nine speakers from six international universities, 21 national speakers from nine Brazilian universities, one research institute and four private companies. Prof. Amauri Menegário, coordinator of the event, gave a brief interview to BrJAC.

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Sponsor Reports

Rapid quantification of 12 nitrosamines in metformin using triple quadrupole GC-MS/MS with Advanced Electron Ionization (AEI)
David Lee, Aaron Lamb, Andrea Romano, Giulia Riccardino

The aim of this paper is to demonstrate the suitability of the Thermo Scientific TSQ 9000 TQ MS coupled to the TRACE 1310 GC for the analysis of 12 nitrosamines in drug substance. The linearity of the new TSQ 9610 TQ MS NeverVent AEI equipped with the Thermo Scientific XLXR detector was also tested for nitrosamines.

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Determination of nitrite and nitrate in sugar using ion chromatography
Hua Yang, Jeffrey Rohrer

The goal of this study was to develop a method for the determination of nitrite and nitrate in sugar using an ion chromatography system with a Thermo Scientific Dionex IonPac AS11-HC-4μm column.

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Analysis of microplastics as emerging contaminants using single particle ICP-MS
Tomoko Vincent, Dhinesh Asogan, Daniel Kutscher

The goal of this study was to demonstrate the applicability of the Thermo Scientific iCAP RQ ICP-MS in conjunction with the scQuant plug-in for Thermo Scientific Qtegra Intelligent Scientific Data Solution Software for the characterization of microplastics in environmental water samples.

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Sponsor Releases

Thermo Scientific TSQ 9610 Triple Quadrupole GC-MS/MS System: Unstoppable confidence for analytical testing

User-centric Thermo Scientific NeverVent technology, extended-life detector, and intelligent software eliminate unnecessary downtime to maximize your sample throughput and return on investment. New extended linear dynamic range combined with proven high sensitivity ensures you keep ahead of the toughest regulatory methods and business demands.

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Thermo Scientific iCAP RQ ICP-MS: Simplicity, productivity and robustness for routine labs in agribusiness

The Thermo Scientific iCAP RQ ICP-MS is particularly suited to the analysis of food, simultaneously determining trace level contaminants and macro level nutrients. This system provides a simple, robust, multielemental analysis method for major and minor concentrations of elements in food.

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easyFILL – Automated Dosing Station

Milestone easyFILL frees the operator from reagent addition and dilution by automating these steps, with the additional benefits of reducing their exposure to concentrated acids and ensuring consistency of the process.

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Pittcon Conference & Expo

Pittcon is a friendly, welcoming environment where analytical chemists at all professional levels meet. Pittcon is a platform for sharing ideas and cooperating to form new ones. At Pittcon, you will find that spark that drives your research, your career, and above all, your scientific perspective forward.

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SelectScience® Pioneers online Communication and Promotes Scientific Success

SelectScience® informs through trusted lab product reviews, virtual events, thought-leading webinars, features on hot scientific topics, eBooks and more, independent online publisher SelectScience® provides scientists across the world with vital information about the best products and techniques to use in their work.

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CHROMacademy is the leading provider of eLearning for analytical science

For over 10 years, CHROMacademy has increased knowledge, efficiency and productivity across all applications of chromatography.

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