Aplicação da métrica estrela verde nos componentes de química analítica da UFFS Realeza/PR

Abstract

Several amenities that we enjoy nowadays are a result of the chemistry development over the years. On the other hand, there are some drawbacks and long-term concerns. The Green Chemistry (GC) appears as a movement to rethink chemical development in a more responsible and sustainable way for everybody. In addition, it brings economic, technological, environmental advantages. In the GC there are some metrics that are used to evaluate how green the chemical processes are. One of the metrics is the Green Star (GS) that is considered holistic, because it seeks to understand the phenomena in its totality and globality. The GS is the most recommended metric for working in the teaching of chemistry, seeing its pedagogical implications, simplicity and various potentials to be explored. In this work we sought to know and apply the concepts of GC analyzing carried out activities in the components of Experimental Analytical Chemistry (EAC), both qualitative and quantitative, developed during the Chemistry degree of the Universidade Federal da Fronteira Sul (UFFS), Campus Realeza/PR. For this, the GS metric was used to analyze experimental practices regarding its chemical "greenish", measured by the Star's Fill Index (SFI), according to the principles of the GC. The activities were catalogued and after the construction of the Stars, a study was carried out, to increase the index of the practices with low SFI when didactic and economically possible. In the whole were built 38 GS and of these only 11 presented SFI below 50%, which were the focus of this study. Based on the outcome, suggestions were made to improve the SFI and consequently make the practices performed in the EAC more sustainable and environmentally friendly. In fact, there was a 5 stars improvement of the 11 studies. Therefore, this work of application of the GS metric proved to be efficient in the assessment of the risks and the "greenish" of the practices carried out in the EAC, encouraging a change of mentality in the chemical practice, always aiming the least possible risk.