Novas métricas holísticas para avaliação da verdura de reações de síntese em laboratório

Ribeiro, M. Gabriela T. C.; Machado, Adélio A. S. C.

doi:10.1590/s0100-40422012000900031

Cited by 6 publications

(2 citation statements)

References 5 publications

(15 reference statements)

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“…Among the alternatives found in the research, involving the algorithms or use of graphics for metrics representation, there are metrics that result to a simple number: a single reference value for assessment of the "greenness" of chemical processes (RIBEIRO et al, 2014;RIBEIRO & MACHADO, 2012;AKEN et al, 2006). In these cases, the assessment procedure and the comparison between different procedures are extremely easiest.…”

Section: Search For a Holistic Metricmentioning

confidence: 99%

Proposal of a holistic environmental metric based on environmental indicators

Finazzi

Santos

2022

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There is no doubt Sustainability reaching is essential. Natural resources rational use is extremely important to human development. Beyond the years, this preoccupation led various institutions to elaborate legislation and international guides, as Kyoto protocol, to satisfy sustainability conditions. Agenda 2030 is the most recent instrument, whose proposals attempt to these conditions. Within this context, human activity related to Chemistry is noteworthy: to guarantee all sustainable aspects in a procedure is a great challenge. The assessment of Sustainability in Chemistry is performed by green metrics calculations, whose utility is most appropriate in comparison of procedures than in a single procedure assessment. Due to problematics with the utilization of metrics, related to: simplifications leading to pseudo-results, need of various misunderstanding calculations and incorrect adoption of metrics, an environmental metric that attempts to current necessities related to materials and energetics consumption and to assessment of sustainability in individual chemistry procedures is proposed. The metric was elaborated aiming to attempt all environmental requirements of chemical sustainability in a simplified and reliable manner, basing on bibliographic search and expertise. The metric elaboration has a combined approach, in which reference values are established to the main indicators of sustainability, using a Soft System Methodology (SSM).

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Section: Search For a Holistic Metricmentioning

confidence: 99%

Proposal of a holistic environmental metric based on environmental indicators

Finazzi

Santos

2022

REGET

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“…In previous articles, two graphic holistic metrics, “green star” and “green circle”, − for assessing the greenness of synthesis were presented. These metrics assess the greenness by evaluating the accomplishment of each of the 12 principles of green chemistry that apply to the case under evaluation.…”

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confidence: 99%

Assessing the Greenness of Chemical Reactions in the Laboratory Using Updated Holistic Graphic Metrics Based on the Globally Harmonized System of Classification and Labeling of Chemicals

2014

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Two graphic holistic metrics for assessing the greenness of synthesis, the "green star" and the "green circle", have been presented previously. These metrics assess the greenness by the degree of accomplishment of each of the 12 principles of green chemistry that apply to the case under evaluation. The criteria for assessment were based on the hazards symbols used in the system established by the European Union, directive 67/548/EEC, obtained from the safety data sheets of chemicals. Meanwhile, the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) replaced that system and introduced a new classification of hazards and new symbols. The objective of this work is to present new criteria for the construction of the metrics based on the GHS system. A brief presentation of this system is included. The present upgrade also includes an improvement of the graphic presentation of the green star to facilitate the visual assessment of the degree of accomplishment of each green chemistry principle.

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Holistic Green Chemistry Metrics for Use in Teaching Laboratories

Machado

2015

Worldwide Trends in Green Chemistry Education

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A review of the work that has been developed in Oporto on holistic metrics for evaluation of greenness in green chemistry is presented. As an introduction, a discussion on the complex nature of chemistry, greenness and its evaluation is used to show: the systemic nature of the metrification problem; why reductionist one-dimensional metrics have to be used in batteries; and the advantage of adopting holistic metrics conceived under systems thinking. Then the following items are presented: first, conception and construction of simple graphic metrics based in the Twelve Principles of Green Chemistry for holistic assessment of the greenness: green star, green circle and green matrix; second, the use of the metrics for green chemistry teaching, especially of the green star, for greenness optimization of the synthesis used in organic and inorganic teaching laboratories and for evaluation of laboratory course contents in Portuguese secondary schools; finally, a discussion of the advantages and limitations of holistic metrics based on the Twelve Principles.

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Novas métricas holísticas para avaliação da verdura de reações de síntese em laboratório

Cited by 6 publications

References 5 publications

Proposal of a holistic environmental metric based on environmental indicators

Proposal of a holistic environmental metric based on environmental indicators

Assessing the Greenness of Chemical Reactions in the Laboratory Using Updated Holistic Graphic Metrics Based on the Globally Harmonized System of Classification and Labeling of Chemicals

Holistic Green Chemistry Metrics for Use in Teaching Laboratories

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