The development of Analytical Chemistry in Brazil: retrospective and expectations

Zagatto, Elias A.G.; Sá, Sandra M. O.

doi:10.1590/s0103-50532003000200002

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…Throughout this review, we have also sought to highlight and explain the differences between batch and flow reactors. Although microreactors have also been successfully applied to electrochemical analysis/sensing and to fuel cells, these topics are outside the scope of this review, and readers are instead referred to other summaries regarding electrochemical analysis and sensing ,− and fuel cell technology. , …”

Section: Introductionmentioning

confidence: 99%

Applications of Flow Microreactors in Electrosynthetic Processes

2017

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The fundamental advantages and potential benefits of flow microreactor technology include extremely large surface-to-volume ratios, precise control over temperature and residence time, extremely fast molecular diffusion, and increased safety during reactive processes. These advantages and benefits can be applied to a wide range of electrosynthetic techniques, and so the integration of flow microreactors with electrosynthesis has received significant research interest from both academia and industry. This review presents an up-to-date overview of electrosynthetic processes in continuous-flow microreactors. In addition, the advantages of continuous-flow electrochemistry are discussed, along with a thorough comparison of microreactor-based processes and conventional batch reaction systems.

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Section: Introductionmentioning

confidence: 99%

Applications of Flow Microreactors in Electrosynthetic Processes

2017

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“…31 A critical view of flow analysis was also recently presented in an editorial in this journal. 48 This discussion has been motivated by the decrease in the number of publications and probably also in the number of researchers acting in the field of flow analysis. Whereas the overall scientific production in analytical chemistry and in some well-established subareas (e.g., electroanalysis and chromatography) is significantly increasing and the number of articles in other subareas (e.g., atomic spectrometry) is nearly constant, the scientific production in flow analysis has been deeply decreased since 2008 (Figure 2).…”

Section: Looking Forward: Research Perspectives On Flow Analysismentioning

confidence: 99%

Flow Analysis: Looking Back and Forward

Rocha¹

2018

J. Braz. Chem. Soc.

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Flow analysis changed significantly the way of performing chemical analysis by (i) mechanization of analytical procedures in a continuous flowing stream with minimal sample intercontamination; (ii) analytical measurements without attaining chemical equilibria, thus increasing the applicability of kinetic methods and allowing the exploitation of non-quantitative processes; (iii) exploitation of concentration gradients and (iv) use of unstable reagents or measurement of unstable products. Flow-based procedures are generally characterized by high sample throughput, improved precision, minimized waste generation, and often better selectivity. The performance of detection systems is usually improved because of the in-line sample conditioning and measurements under reproductive dynamic conditions and timing. However, after achieving several innovations, perspectives for further developments have been questioned mainly because of the recent decrease in the number of publications on flow analysis. The aim of this review is then to discuss the impact of flow-based methods on chemical analysis, emphasizing recent applications and developments, including miniaturization, bioanalysis, microextractions, green analytical chemistry and synergic hyphenation with other techniques and processes. The author's personal view about research perspectives in the field is also presented.

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“…There are several excellent articles describing the history and=or status of analytical chemistry in Brazil, published in Portuguese (Curtius 1982;Neves 1984;N o obrega et al 1996;Fatibello-Filho et al 2002) and in English (Senise 1985;Galembeck 1999;Oliveira-Neto et al 2001;Zagatto and S a a 2003;Andrade et al 2004), in which the outstanding contributions of Fritz Feigl, Heinrich Rheinboldt, Heinrich Hauptman, Paschoal Senise, Antonio Celso Spinola Costa, Priest Leopoldo Hainberger, Henrique Bergamin-Filho, and Otto Alcides Ohlweiler, who published the first analytical chemistry textbook in Portuguese, were highlighted. In 1935, a chemistry b. sc.…”

Section: Electroanalytical Chemistrymentioning

confidence: 99%

A Glimpse of Recent Developments in Brazilian Analytical Chemistry

et al. 2008

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This review highlights some relevant contributions proposed by Brazilian analytical research groups mainly after 2004. This year was chosen due to an earlier publication of an overview with similar scope by Andrade et al. (2004). The selected papers are representative, but the authors have not tried to present a comprehensive overview of the aforementioned period. The chosen areas for discussion were automation in analytical chemistry, chemometrics, chromatography, capillary electrophoresis and mass spectrometry, electroanalytical chemistry, environmental analytical chemistry, preconcentration and separation procedures, and spectrochemical analysis. A glimpse of the Brazilian contributions shows the stage of development of analytical chemistry in Brazil, with emphasis on major advancements and critical needs.

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The development of Analytical Chemistry in Brazil: retrospective and expectations

Cited by 6 publications

References 14 publications

Applications of Flow Microreactors in Electrosynthetic Processes

Applications of Flow Microreactors in Electrosynthetic Processes

Flow Analysis: Looking Back and Forward

A Glimpse of Recent Developments in Brazilian Analytical Chemistry

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